I believe that those who get only 13 mpg - no matter how carefully they drive - must have a defect in their RX-8.

My theory is that they were all built in one time frame, probably early on.

You can decode your VIN here:
http://www.analogx.com/contents/vinview.htm


So here comes my info - the last 6 digits of the VIN are the serial number.

VIN: JM1FE173940109161
Optimum: 21 mpg on highway after 2000 miles

(Plant 0, Serial Number 109161)

Let's see what those folks with 13 mpg have.

If you're concerned about privacy etc... keep in mind that everyone can read your VIN when you park your car at the grocery store.

my last digits were 1365, and I got around 13 MPG

Originally posted by miata2rx8
my last digits were 1365, and I got around 13 MPG

I think it'd be best to give 6 digits..

do you want just those w/ 13 mpg? or everyone...

ah well i get ~18mpg ocassionally 20 when i do lots of highway
vin is 100879

Originally posted by lefuton
do you want just those w/ 13 mpg? or everyone...


i think as many as possible, both good and bad mpg.

Once in a while we collect and sort them, like this:

100879 ...... 18 to 20
109161 ...... 19 to 21
xx1365 ...... 13


sorted by increasing VIN..

107891 ...... 14 to 17

103130 ---- 13 to 15

Between 17-18 mainly city, 20+ going uphill, 24+ coming back from Flagstaff, 7K feet to 1.2K feet. Driving style does not seem to make much difference, so have fun.

Originally posted by Urchin
Between 17-18 mainly city, 20+ going uphill, 24+ coming back from Flagstaff, 7K feet to 1.2K feet. Driving style does not seem to make much difference, so have fun.

so what are the last 6 digits of your VIN?

VIN was on the re line, 101058, which was relatively early first allocation. Picked it up July 18.

I hope that everyone does the math on mpg right, has been debated enough. Here's a new summary. So far 2 ppl with real low numbers, and their VINs are indeed "together" in the sorted list:

Last 6 digits of VIN ..... mpg

100879 ...... 18 to 20
103130 ...... 13 to 15 <-- low
107891 ...... 14 to 17 <-- low
109161 ...... 19 to 21
101058 ...... 18 to 21
xx1365 ...... 13

Have you added yours?

-Peter

105899

22-23 mpg
80% highway commute

106454 here, between 17.5 and 21 depending on the HW i drive.

103727
city 17.8 highway 22.2
MPG continues to improve w/mileage.

Last 6 digits of VIN ..... mpg

100879 ...... 18 to 20
103130 ...... 13 to 15 <-- low
103727 ...... 17.8 to 22.2
105899 ...... 22 to 23
106454 ...... 17.5 to 21
107891 ...... 14 to 17 <-- low
109161 ...... 19 to 21
101058 ...... 18 to 21
xx1365 ...... 13

108583

Lowest - 18.3

Highest - 19.5

All tanks have been 50/50 driving.

104226 15 to 17 MPG (mostly city)

Tell me that you are kidding about the grocery store comment! You don't have a sign on the car saying that my name is [rx8club.com name], search for all my posts, do you?

I don't see any patterns emerging yet.

I will say that right after an ecu reset, the car seems to have better fuel economy. But you have been looking at my a/f graphs in the tech garage, right?

100804

20-21 mpg

about 75% highway

New summary:

100804 ...... 20 to 21
100879 ...... 18 to 20
103130 ...... 13 to 15 <-- LOW
103727 ...... 17.8 to 22.2
104226 ...... 15 to 17 (city)
105899 ...... 22 to 23
106454 ...... 17.5 to 21
107891 ...... 14 to 17 <-- LOW
108583 ...... 18.3 to 19.5
109161 ...... 19 to 21
101058 ...... 18 to 21
xx1365 ...... 13

@syntrix: thanks for pointing me to the AF thread. Had not seen it before.

100804 ...... 20 to 21
100879 ...... 18 to 20
101058 ...... 18 to 21
xx1365 ...... 13
103130 ...... 13 to 15 <-- LOW
103727 ...... 17.8 to 22.2
104226 ...... 15 to 17 (city)
105899 ...... 22 to 23
106429 ...... 17.3 to 21.3
106454 ...... 17.5 to 21
107891 ...... 14 to 17 <-- LOW
108583 ...... 18.3 to 19.5
109161 ...... 19 to 21

I think you had the 1058 & 1365 in the wrong place, so I fixed that & added mine (6429)

100804 ...... 20 to 21
100879 ...... 18 to 20
101058 ...... 18 to 21
xx1365 ...... 13
101450 .......15.3 to 19.3 (mostly city to 60% highway, normally around 17-18, just once above 18.4)
102974........17 to 20
103130 ...... 13 to 15 <-- LOW
103727 ...... 17.8 to 22.2
104226 ...... 15 to 17 (city)
105899 ...... 22 to 23
106429 ...... 17.3 to 21.3
106454 ...... 17.5 to 21
107891 ...... 14 to 17 <-- LOW
108583 ...... 18.3 to 19.5
109161 ...... 19 to 21

100804 ...... 20 to 21
100879 ...... 18 to 20
101058 ...... 18 to 21
xx1365 ...... 13
101450 .......15.3 to 19.3 (mostly city to 60% highway, normally around 17-18, just once above 18.4)
102974........17 to 20
103130 ...... 13 to 15 <-- LOW
103727 ...... 17.8 to 22.2
104226 ...... 15 to 17 (city)
105899 ...... 22 to 23
106429 ...... 17.3 to 21.3
106454 ...... 17.5 to 21
106647 .......14.9 to 25.6
107891 ...... 14 to 17 <-- LOW
108583 ...... 18.3 to 19.5
109161 ...... 19 to 21

100804 ...... 20 to 21
100879 ...... 18 to 20
101058 ...... 18 to 21
101083 ...... 15 to 19 (10% highway)
xx1365 ...... 13
101450 .......15.3 to 19.3 (mostly city to 60% highway, normally around 17-18, just once above 18.4)
102974........17 to 20
103130 ...... 13 to 15 <-- LOW
103727 ...... 17.8 to 22.2
104226 ...... 15 to 17 (city)
105899 ...... 22 to 23
106429 ...... 17.3 to 21.3
106454 ...... 17.5 to 21
106647 .......14.9 to 25.6
107891 ...... 14 to 17 <-- LOW
108583 ...... 18.3 to 19.5
109161 ...... 19 to 21

100804 ...... 20 to 21
100849 ...... 17.5 to 23.3
100879 ...... 18 to 20
101058 ...... 18 to 21
101083 ...... 15 to 19 (10% highway)
xx1365 ...... 13
101450 .......15.3 to 19.3 (mostly city to 60% highway, normally around 17-18, just once above 18.4)
102974........17 to 20
103130 ...... 13 to 15 <-- LOW
103727 ...... 17.8 to 22.2
104226 ...... 15 to 17 (city)
105899 ...... 22 to 23
106429 ...... 17.3 to 21.3
106454 ...... 17.5 to 21
106647 .......14.9 to 25.6
107891 ...... 14 to 17 <-- LOW
108583 ...... 18.3 to 19.5
109161 ...... 19 to 21

100804 ...... 20 to 21
100849 ...... 17.5 to 23.3
100879 ...... 18 to 20
101058 ...... 18 to 21
101083 ...... 15 to 19 (10% highway)
xx1365 ...... 13
101450 .......15.3 to 19.3 (mostly city to 60% highway, normally around 17-18, just once above 18.4)
102974........17 to 20
103130 ...... 13 to 15 <-- LOW
103727 ...... 17.8 to 22.2
103841........13-20.5 (13 is hard driving, 20.5 is purely highway)
104226 ...... 15 to 17 (city)
105899 ...... 22 to 23
106429 ...... 17.3 to 21.3
106454 ...... 17.5 to 21
106647 .......14.9 to 25.6
107891 ...... 14 to 17 <-- LOW
108583 ...... 18.3 to 19.5
109161 ...... 19 to 21

100804 ...... 20 to 21
100849 ...... 17.5 to 23.3
100879 ...... 18 to 20
101058 ...... 18 to 21
101083 ...... 15 to 19 (10% highway)
101212 ...... 21 to 22
xx1365 ...... 13
101450 .......15.3 to 19.3 (mostly city to 60% highway, normally around 17-18, just once above 18.4)
102974........17 to 20
103130 ...... 13 to 15 <-- LOW
103727 ...... 17.8 to 22.2
103841........13-20.5 (13 is hard driving, 20.5 is purely highway)
104226 ...... 15 to 17 (city)
105899 ...... 22 to 23
106429 ...... 17.3 to 21.3
106454 ...... 17.5 to 21
106647 .......14.9 to 25.6
107891 ...... 14 to 17 <-- LOW
108583 ...... 18.3 to 19.5

108837 min=14.28 max=22.58 lifetime avg=17.36

106908 - 15.3 - 20.1 (avg 17.7 mostly) only 1400 miles on it.

What I have found is this: the engine loves to rev, and driving under 2800 rpms seems to use MORE fuel. I have been driving at all speeds trying to keep the rpms between 2800 - 3100, this appears to give (my car) the best economy, that is until I get on it. I have noticed that ONE TICK (line) on the fuel guage = 10 miles to get 15 mpg, if I get 12 miles per tick I get 16-17 mpg. I had gotten almost 15 miles per tick and got 20 mpg.

Also I noticed keeping the rpms between 2800-3100 greatly reduces the carbon residue on the tailpipes. Has anyone else noticed this?

108417 18 - 20 mpg

70% Highway

Originally posted by 6speed8
I have noticed that ONE TICK (line) on the fuel guage = 10 miles to get 15 mpg, if I get 12 miles per tick I get 16-17 mpg. I had gotten almost 15 miles per tick and got 20 mpg.

per tick what? ticks per gal, miles per tick you could be on to (or just on) something here!

Also I noticed keeping the rpms between 2800-3100 greatly reduces the carbon residue on the tailpipes. Has anyone else noticed this?

Please tell me you are not serious?! If yiou drive keeping the RPMs in the 2800-3100 range, just forget it and trade it in on the new Toyota Prius. Smthg like ***80*** MPG and goobs of electric torque right at 0 RPM to boot! RideM cowboy!

New Summary

100804 ...... 20 to 21
100849 ...... 17.5 to 23.3
100879 ...... 18 to 20
101058 ...... 18 to 21
101083 ...... 15 to 19 (10% highway)
101212 ...... 21 to 22
101365 ...... 13 <-- LOW
101450 .......15.3 to 19.3 (mostly city to 60% highway, normally around 17-18, just once above 18.4)
102974........17 to 20
103130 ...... 13 to 15 <-- LOW
103727 ...... 17.8 to 22.2
103841........13-20.5 (13 is hard driving, 20.5 is purely highway)
104226 ...... 15 to 17 (city)
105899 ...... 22 to 23
106429 ...... 17.3 to 21.3
106454 ...... 17.5 to 21
106647 .......14.9 to 25.6
106908 ...... 15.3 to 20.1 (avg 17.7 mostly) only 1400 miles on it.
107891 ...... 14 to 17 <-- LOW
108417 ...... 18 to 20 mpg
108583 ...... 18.3 to 19.5
108837 ...... 14.28 - 22.58, lifetime avg=17.36
109161 ...... 19 to 21

Looks like my own .. the 109161 .. is the newest on the list? I bought it 9/16/.

@Spin9k:

>> Please tell me you are not serious?! If yiou drive keeping the RPMs in the 2800-3100 range, just forget it and trade it in on the new Toyota Prius. Smthg like ***80*** MPG and goobs of electric torque right at 0 RPM to boot! RideM cowboy! <<



Hey, no need to flame anyone. Granted, I wouldn't be able to stay at 3000 rpm either (doesn't that amount to only 60 mph in 6th gear?), but his finding *is interesting*, to me at least.

About your comment on the Prius; I've stated on a different thread before that it is possible to build cars that are futuristic in terms of fuel economy AND are fun.

Prototype - Opel Eco Speedster gets 114 miles per Gallon (http://www.rsportscars.com/eng/cars/speedster_eco.asp)

There are people who drive a lot of miles. I do 100 miles a day just to get to work. If I had a 13 mpg tiny RX-8, I'd raise hell at the dealership. As someone else said, with 13 mpg, I want a 500 hp Viper.
I'm lucky, my Mazda gets me 19-21, just barely tolerable.

-Peter

112585 getting a consistent 21 mpg (combo of city & highway)

100804 ...... 20 to 21
100849 ...... 17.5 to 23.3
100879 ...... 18 to 20
101058 ...... 18 to 21
101083 ...... 15 to 19 (10% highway)
101212 ...... 21 to 22
101365 ...... 13 <-- LOW
101450 .......15.3 to 19.3 (mostly city to 60% highway, normally around 17-18, just once above 18.4)

102878 ...... I get 12-17 (85% city mostly, 6 mile work commute)

102974........17 to 20
103130 ...... 13 to 15 <-- LOW
103727 ...... 17.8 to 22.2
103841........13-20.5 (13 is hard driving, 20.5 is purely highway)
104226 ...... 15 to 17 (city)
105899 ...... 22 to 23
106429 ...... 17.3 to 21.3
106454 ...... 17.5 to 21
106647 .......14.9 to 25.6
106908 ...... 15.3 to 20.1 (avg 17.7 mostly) only 1400 miles on it.
107891 ...... 14 to 17 <-- LOW
108417 ...... 18 to 20 mpg
108583 ...... 18.3 to 19.5
108837 ...... 14.28 - 22.58, lifetime avg=17.36
112585 ...... getting a consistent 21 mpg (combo of city & highway)

Originally posted by ptiemann
@Spin9k:

>> Please tell me you are not serious?! If yiou drive keeping the RPMs in the 2800-3100 range, just forget it and trade it in on the new Toyota Prius. Smthg like ***80*** MPG and goobs of electric torque right at 0 RPM to boot! RideM cowboy! <<


Chill - I did this on a hunch. I drive to work at 05:00 on 45 mph roads, speeding (much over 60 ) is not an option. The police are all over the place. I tested the RPM range because the RX-8 is rated at 24 highway right? and that testing is done by the EPA - Right? and at 55 mph in 6th gear is roughly 2800 rpms (or close to it) Right? So I figured if I kept the RPMS in the HIGHWAY rpm range (but going at legal speeds) would I, Could I get 24 mpg, and the answer is NO.

FYI I do not drive like a granny, it was just a test. Helps keep me awake on the 30 mile drive.

Originally posted by 6speed8
Chill - I did this on a hunch. ... Could I get 24 mpg, and the answer is NO.

FYI I do not drive like a granny, it was just a test. Helps keep me awake on the 30 mile drive.

No flame really, and I think the new Prius is pretty nice for relatively sedate ciy/suburban driving. It sounded like you were so focused on MPtick and all, not so much the rest of our nice car.

I also did a test of sorts this last week. Went upcountry NH on relatively quiet morning. Normal mileage here w/small trips 10-20 miles is 18mpg, this trip was 23.3mpg for 200+ miles, PDC to 24mpg advertized I'd say.

In fact my light normally comes on plus/minus 250m, this time at fill I was at 3/4 and it was 266miles !! Did some redlines, mostly 50-70 mph for long stretches, wasn't really paying attention to that.

Not bad, and it totally surprised me, I'd thought maybe 20. With no fun, it might even get 24+ :)

I'f I drive speed limit on the turnpike here in FL (70MPH) for my cruise to work (about 39 miles) I get as high as 26MPG. My everyday city driving with traffic and AC (mandatory most of the time in FL), I get a low of 16 and a high of 19 (pure city, no highway).

Not as good as the 30+ on my Neon, but then again, this aint no Neon :D

101897 -- 16.7 mpg typically

Most of my driving is from stoplight to stoplight, with a brief 4 mile run on a highway (that's when I let er rip) I love to hear that ever so faint chime. Almost all of my driving is with the A/C on, and you know what? The RX-8 does not feel any more powerful with A/C off than with it on. Some cars feel much stronger with the A/C off, but not the '8', it pretty much feels the same.

Anyway, the engine appears to run better when it is revving rather than loafing.

new summary (I see no scheme, looks like there are not that many folks with really poor mpg numbers), so we find out that at least :-)

100804 ...... 20 to 21
100849 ...... 17.5 to 23.3
100879 ...... 18 to 20
101058 ...... 18 to 21
101083 ...... 15 to 19 (10% highway)
101212 ...... 21 to 22
101365 ...... 13 <-- LOW
101450 ...... 15.3 to 19.3 (mostly city to 60% highway, normally around 17-18, just once above 18.4)
101897 ...... 16.7 mpg typically
102878 ...... I get 12-17 (85% city mostly, 6 mile work commute)
102974....... 17 to 20
103130 ...... 13 to 15 <-- LOW
103727 ...... 17.8 to 22.2
103841....... 13-20.5 (13 is hard driving, 20.5 is purely highway)
104226 ...... 15 to 17 (city)
105899 ...... 22 to 23
106429 ...... 17.3 to 21.3
106454 ...... 17.5 to 21
106647 ...... 14.9 to 25.6
106908 ...... 15.3 to 20.1 (avg 17.7 mostly) only 1400 miles on it.
107891 ...... 14 to 17 <-- LOW
108417 ...... 18 to 20 mpg
108583 ...... 18.3 to 19.5
108837 ...... 14.28 - 22.58, lifetime avg=17.36
109161 ...... 19 to 21
112585 ...... 21 - getting a consistent 21 mpg (combo of city & highway)

109058 16.5-22

[i]

Not as good as the 30+ on my Neon, but then again, this aint no Neon :D [/B]

Yeah, at least the 8 doesn't break every 200 miles.

Got my 8 July 15, 03. My average MPG has been 15.9. VIN is 101604. MPG has been getting better with miles, I now have 2400. I really expect better mileage in line with the EPA estimates. Let's hope something shows up in our data sharing.

101145

13-15 CITY
19 HIWAY

110311 17 mpg 50/50 mix city/hwy driving on first 2 tanks.

100112

17.5-19.8

100717, delivered July 16.
At 2.700 miles, last highway trip had 3 tanks -- 25,20,20; last city tank was 16.

105730

I'm just under 2000 miles. Had to add about a quarter quart of oil because the oil light indicator came on and stayed on. The oil on the dip stick was only 1/3 of the way down.

Worst mileage 17 MPG city & hard driving
Best mileage 23.2 MPG highway only (75 MPH)

Average city/highway: 18-19 MPG

Average highway only: 22 MPG (that's at 75-80 MPH all the way)

100112 ...... 17.5 to 19.8
105730 ...... 17 to 22
100717 ...... 16 to 25
100804 ...... 20 to 21
100849 ...... 17.5 to 23.3
100879 ...... 18 to 20
101058 ...... 18 to 21
101083 ...... 15 to 19 (10% highway)
101145 ...... 13 to 19
101212 ...... 21 to 22
101365 ...... 13 <-- LOW
101450 ...... 15.3 to 19.3 (mostly city to 60% highway, normally around 17-18, just once above 18.4)
101604 ...... 15.9 average after 2400 miles
101897 ...... 16.7 mpg typically
102878 ...... I get 12-17 (85% city mostly, 6 mile work commute)
102974....... 17 to 20
103130 ...... 13 to 15 <-- LOW
103727 ...... 17.8 to 22.2
103841....... 13-20.5 (13 is hard driving, 20.5 is purely highway)
104226 ...... 15 to 17 (city)
105899 ...... 22 to 23
106429 ...... 17.3 to 21.3
106454 ...... 17.5 to 21
106647 ...... 14.9 to 25.6
106908 ...... 15.3 to 20.1 (avg 17.7 mostly) only 1400 miles on it.
107891 ...... 14 to 17 <-- LOW
108417 ...... 18 to 20 mpg
108583 ...... 18.3 to 19.5
108837 ...... 14.28 - 22.58, lifetime avg=17.36
109058 ...... 16.5 to 22
109161 ...... 19 to 21
110311 ...... 17 (on first 2 tanks, very new car)
112585 ...... 21 - getting a consistent 21 mpg (combo of city & highway)

Question to everyone: Does it seem that the higher the number the newer the car is? E.g. 110311, the second from the bottom is on his second tank. If they don't give out the numbers consecutively, then this "survey" makes not much sense.

after you state the fuel economy and your vin, multiply your fuel economy by 707, divide by the last 5 digits of your vin, raise to the power of (your age - 16), divide by the last 4 digits of your social security number, and then add the surface area of contact between your driving shoe and the gas pedal. This will tell us the relative keys to our existence.

Originally posted by pmacwill
after you state the fuel economy and your vin, multiply your fuel economy by 707, divide by the last 5 digits of your vin, raise to the power of (your age - 16), divide by the last 4 digits of your social security number, and then add the surface area of contact between your driving shoe and the gas pedal. This will tell us the relative keys to our existence.

social security numbers are not the same worldwide..

106064 13-15 mpg 1,200 miles

I wish we included the number of miles on the car. Plotting that against mpg may be more informative than VIN to mpg.

Originally posted by LesPaul
106064 13-15 mpg 1,200 miles

I wish we included the number of miles on the car. Plotting that against mpg may be more informative than VIN to mpg. I agree...

edit: I've removed the chart here cuz it was obsolete. See my 10/22 post for the current one.

112741 20 MPG every fill up give or take

Mostly city driving; 1,500 miles; no DSC/TC

I wish we included the number of miles on the car. Plotting that against mpg may be more informative than VIN to mpg.

I have just added to my listing below:

100112 ...... 17.5 to 19.8
105730 ...... 17 to 22
100717 ...... 16 to 25
100804 ...... 20 to 21
100849 ...... 17.5 to 23.3
100879 ...... 18 to 20
101058 ...... 18 to 21
101083 ...... 15 to 19 (10% highway)
101145 ...... 13 to 19
101212 ...... 21 to 22 (4600 miles-80% Hwy,15% City,5% 9K rpm)
101365 ...... 13 <-- LOW
101450 ...... 15.3 to 19.3 (mostly city to 60% highway, normally around 17-18, just once above 18.4)
101604 ...... 15.9 average after 2400 miles
101897 ...... 16.7 mpg typically
102878 ...... I get 12-17 (85% city mostly, 6 mile work commute)
102974....... 17 to 23...2500 miles
103130 ...... 13 to 15 <-- LOW
103727 ...... 17.8 to 22.2
103841....... 13-20.5 (13 is hard driving, 20.5 is purely highway)
104226 ...... 15 to 17 (city)
105899 ...... 22 to 23
106429 ...... 17.3 to 21.3
106454 ...... 17.5 to 21
106647 ...... 14.9 to 25.6
106908 ...... 15.3 to 20.1 (avg 17.7 mostly) only 1400 miles on it.
107891 ...... 14 to 17 <-- LOW
108417 ...... 18 to 20 mpg
108583 ...... 18.3 to 19.5
108837 ...... 14.28 - 22.58, lifetime avg=17.36
109058 ...... 16.5 to 22
109161 ...... 19 to 21
110311 ...... 17 (on first 2 tanks, very new car)
112585 ...... 21 - getting a consistent 21 mpg (combo of city & highway)

RENESIS is hand built so all cars wont be 100% same and wont work 100% same. That's my theory on why many Rx8's have different performance, gas milage, etc.

my .02!

second time I put 93 octane in it, tho, this is the only time I'm checking, forgot the first time, owned it since Friday. approx 230+ miles on it so far.

113952........20 {Predominanatly city-type driving}

100112 ...... 17.5 to 19.8
100717 ...... 16 to 25
100804 ...... 20 to 21
100849 ...... 17.5 to 23.3
100879 ...... 18 to 20
101058 ...... 18 to 21
101083 ...... 15 to 19 (10% highway)
101145 ...... 13 to 19
101212 ...... 21 to 22 (4600 miles-80% Hwy,15% City,5% 9K rpm)
101365 ...... 13 <-- LOW
101450 ...... 15.3 to 19.3 (mostly city to 60% highway, normally around 17-18, just once above 18.4)
101604 ...... 15.9 average after 2400 miles
101897 ...... 16.7 mpg typically
102878 ...... I get 12-17 (85% city mostly, 6 mile work commute)
102974....... 17 to 23...2500 miles
103130 ...... 13 to 15 <-- LOW
103727 ...... 17.8 to 22.2
103841....... 13-20.5 (13 is hard driving, 20.5 is purely highway)
104226 ...... 15 to 17 (city)
105899 ...... 22 to 23
105730 ...... 17 to 22
106064 ...... 13-15 mpg 1,200 miles
106429 ...... 17.3 to 21.3
106454 ...... 17.5 to 21
106647 ...... 14.9 to 25.6
106908 ...... 15.3 to 20.1 (avg 17.7 mostly) only 1400 miles on it.
107891 ...... 14 to 17 <-- LOW
108417 ...... 18 to 20 mpg
108583 ...... 18.3 to 19.5
108837 ...... 14.28 - 22.58, lifetime avg=17.36
109058 ...... 16.5 to 22
109161 ...... 19 to 21
110311 ...... 17 (on first 2 tanks, very new car)
112585 ...... 21 - getting a consistent 21 mpg (combo of city & highway)
113952 ...... 20 {Predominanatly city-type driving}


Congrats to oosik getting 20 in city driving, and that on the first tank. I'm impressed.

105069 -- 16 - 20

A typical day is mostly city / short highway hops; work is less than 10mi from home.

I haven't had any purely highway tanks yet to test total hwy mileage.

114502

20 city / 26 highway

300 miles in 3 days of ownership

Originally posted by Racer X-8
I agree...

Nice graph. What's apparent is the lack of a trend.

It might also be informative to know mpg controlling for age and/or sex of the driver? Or how long you've been driving a stick?

Lack of trend. true.
Lots of factors, like age, driving environment e.g. I drive a windy mountain highway to work.
Climate (temperature , wind) plays a role.

But:

Those 3 folks who get only 13 mpg definitely have some material now in their hands to go to their dealer with.

100112 ...... 17.5 to 19.8
100717 ...... 16 to 25
100804 ...... 20 to 21
100849 ...... 17.5 to 23.3
100879 ...... 18 to 20
101058 ...... 18 to 21
101083 ...... 15 to 19 (10% highway)
101145 ...... 13 to 19
101212 ...... 21 to 22 (4600 miles-80% Hwy,15% City,5% 9K rpm)
101365 ...... 13 <-- LOW
101450 ...... 15.3 to 19.3 (mostly city to 60% highway, normally around 17-18, just once above 18.4)
101604 ...... 15.9 average after 2400 miles
101897 ...... 16.7 mpg typically
102878 ...... I get 12-17 (85% city mostly, 6 mile work commute)
102974....... 17 to 23...2500 miles
103130 ...... 13 to 15 <-- LOW
103727 ...... 17.8 to 22.2
103841....... 13-20.5 (13 is hard driving, 20.5 is purely highway)
104226 ...... 15 to 17 (city)
105069 ...... 16 to 20
105899 ...... 22 to 23
105730 ...... 17 to 22
106064 ...... 13-15 mpg 1,200 miles
106429 ...... 17.3 to 21.3
106454 ...... 17.5 to 21
106647 ...... 14.9 to 25.6
106908 ...... 15.3 to 20.1 (avg 17.7 mostly) only 1400 miles on it.
107891 ...... 14 to 17 <-- LOW
108417 ...... 18 to 20 mpg
108583 ...... 18.3 to 19.5
108837 ...... 14.28 - 22.58, lifetime avg=17.36
109058 ...... 16.5 to 22
109161 ...... 19 to 21
110311 ...... 17 (on first 2 tanks, very new car)
112585 ...... 21 - getting a consistent 21 mpg (combo of city & highway)
113952 ...... 20 {Predominanatly city-type driving}

my 6 digits are: 106206. I am getting about 15mpg. about 50/50 for highway/city.

100112 ...... 17.5 to 19.8
100717 ...... 16 to 25
100804 ...... 20 to 21
100849 ...... 17.5 to 23.3
100879 ...... 18 to 20
101058 ...... 18 to 21
101083 ...... 15 to 19 (10% highway)
101145 ...... 13 to 19
101212 ...... 21 to 22 (4600 miles-80% Hwy,15% City,5% 9K rpm)
101365 ...... 13 <-- LOW
101450 ...... 15.3 to 19.3 (mostly city to 60% highway, normally around 17-18, just once above 18.4)
101604 ...... 15.9 average after 2400 miles
101897 ...... 16.7 mpg typically
102878 ...... I get 12-17 (85% city mostly, 6 mile work commute)
102974....... 17 to 23...2500 miles
103130 ...... 13 to 15 <-- LOW
103727 ...... 17.8 to 22.2
103841....... 13-20.5 (13 is hard driving, 20.5 is purely highway)
104226 ...... 15 to 17 (city)
105069 ...... 16 to 20
105899 ...... 22 to 23
105730 ...... 17 to 22
106064 ...... 13-15 mpg 1,200 miles
106206 ...... 15 about 50/50 for highway/city.
106429 ...... 17.3 to 21.3
106454 ...... 17.5 to 21
106647 ...... 14.9 to 25.6
106908 ...... 15.3 to 20.1 (avg 17.7 mostly) only 1400 miles on it.
107891 ...... 14 to 17 <-- LOW
108417 ...... 18 to 20 mpg
108583 ...... 18.3 to 19.5
108837 ...... 14.28 - 22.58, lifetime avg=17.36
109058 ...... 16.5 to 22
109161 ...... 19 to 21
110311 ...... 17 (on first 2 tanks, very new car)
112585 ...... 21 - getting a consistent 21 mpg (combo of city & highway)
113952 ...... 20 {Predominanatly city-type driving}

Originally posted by Racer X-8
Here's the latest. I thought I was actually starting to see a trend & the excel polynomial trend line saw it too...(the black line). I dunno...let's keep adding to this & see if it gains definition...

interesting. Looks like there's a valley. The stats are maybe not precise 'cause some are new to stick or different habits, but if we collect a LOT of numbers, then I hope it'll make up for those problems.

102035 - typically 19.5 MPG

I changed the chart X axis. Previous versions were equally spaced between data points, not accounting for how close or far away the vin numbers are from one to the next. Looks different, I think it's more accurate this way.

edit: I've removed the chart here cuz it was obsolete. See 10/22 post for the current one.

my full digits are 101365. Averaged around 15 until the last few weeks then around 12-13. Got a new engine (picking up car tomorrow) so I'll let you know what the new numbers are.

Originally posted by miata2rx8
my full digits are 101365. Averaged around 15 until the last few weeks then around 12-13. Got a new engine (picking up car tomorrow) so I'll let you know what the new numbers are.

good luck with the new engine, I'm sure it'll achieve the 20 mpg that almost everyone seems to get.

-Peter

Can someone convert KM/L to MPG for me...thx!

I have been getting around 6.6km/L or 15.15L/100km here in Toronto.

80% City, 20% Highway.

So my VIN# is 119173.

I haven't taken delivery yet (1 month 2 go)

Based on the chart, which seems to curve up as the VIN numbers increase, I wonder what my MPG w/b when I break her in.

Claude H.

Originally posted by SQ88
Can someone convert KM/L to MPG for me...thx!

I have been getting around 6.6km/L or 15.15L/100km here in Toronto.

80% City, 20% Highway.


15.15L/100km

is

15.53 mpg

(1 m = 1.60935 km, 1 G = 3.78541 l)

I'll add it to a new summary

100112 ...... 17.5 to 19.8
100717 ...... 16 to 25
100804 ...... 20 to 21
100849 ...... 17.5 to 23.3
100879 ...... 18 to 20
101058 ...... 18 to 21
101083 ...... 15 to 19 (10% highway)
101145 ...... 13 to 19
101212 ...... 21 to 22 (4600 miles-80% Hwy,15% City,5% 9K rpm)
101365 ...... 13 <-- LOW
101450 ...... 15.3 to 19.3 (mostly city to 60% highway, normally around 17-18, just once above 18.4)
101604 ...... 15.9 average after 2400 miles
101897 ...... 16.7 mpg typically
102878 ...... I get 12-17 (85% city mostly, 6 mile work commute)
102035 ...... 19.5
102974 ...... 17 to 23...2500 miles
103130 ...... 13 to 15 <-- LOW
103727 ...... 17.8 to 22.2
103841....... 13-20.5 (13 is hard driving, 20.5 is purely highway)
104226 ...... 15 to 17 (city)
105069 ...... 16 to 20
105899 ...... 22 to 23
105730 ...... 17 to 22
106064 ...... 13-15 mpg 1,200 miles
106206 ...... 15 about 50/50 for highway/city.
106429 ...... 17.3 to 21.3
106454 ...... 17.5 to 21
106647 ...... 14.9 to 25.6
106908 ...... 15.3 to 20.1 (avg 17.7 mostly) only 1400 miles on it.
107891 ...... 14 to 17 <-- LOW
108417 ...... 18 to 20 mpg
108583 ...... 18.3 to 19.5
108837 ...... 14.28 - 22.58, lifetime avg=17.36
109058 ...... 16.5 to 22
109161 ...... 19 to 21
110311 ...... 17 (on first 2 tanks, very new car)
112585 ...... 21 - getting a consistent 21 mpg (combo of city & highway)
113952 ...... 20 {Predominanatly city-type driving}

has anyone taken into account air conditioner use? im not sure how much gas this wastes, but if you have the a/c running full blast in the socal heat, you have to be losing some MPG. im on my 2nd tank, getting approximately 15 mpg. vin # ends in 114xxx.

I'm amazed at how organized this thing is going. MPG is hard to trend and I applaud you for taking the initiative to try to figure out one. Keep up the good work and hope you guys find something from this!

Originally posted by djmano
has anyone taken into account air conditioner use?

That leads to an interesting possibility. As later VINS are sold in the fall and winter, less air conditioning will be used, hence higher mileage and a false trend?

Anyone here a statistician?

Thought you might like to see the spreadsheet.

PM me if you want to add/correct something. Since the graph is using average MPG, anything you can provide on that number is most important...for now anyway...

Hayseed, I've ace'd my stats courses, but, YUK! Besides, accounting for the use of AC? He he...right.

Y'all take what you see & really give it a large margin for error...say, 2 mpg maybe, for each car. Maybe more. I surely can't verify the accuracy of any numbers except for my own car. Differences in the duty of cars is HUGE. Like, mine doesn't even know what a mountain is yet... City/highway... AC useage... Transmission... Total miles/break-in... Hard driving habits... Soon a lot of us will have some really cold morning start-ups, some (like me) not so much so...

edit: see the updated spreadsheet 10/23

Thanks - ptiemann
----------------------------------------------
15.15L/100km

is

15.53 mpg

(1 m = 1.60935 km, 1 G = 3.78541 l)

I'll add it to a new summary
----------------------------------------------

My VIN# is 101580 -> 15.53mpg - 80% City, 20% Hwy.

101431 - 18-20 mpg mainly highway driving at >70 mph.

Hey racer -

just realized that I didn't give you my trans. It's a manual 6 speed. Vin 112741

I just found this thread about ODO errors (http://www.rx8club.com/showthread.php?s=&threadid=12718)

If the ODO shows 10% more miles than you actually drove, then that means that your real mpg is 10% less :-(

There was also something about the speedometer showing a too high number, that's another story. I have to check on that too next time I see that cop's radar.

It's unclear if ALL RX-8s have the same mistake or only some.

-Peter

The error is not 10%, it's 1/10th of a mile every 5 or 7 miles. Assuming that is exact, thats 2% error - tops.

My VIN ends in 101393.

Gas Mileage ranges from 20-24 mpg (75% hwy to 100% Hwy)

One tank was all racetrack mileage at 12.5 mpg

I've updated the spreadsheet above, just a little while ago. Here's what the graph looks like now. (I'm gonna just edit/update these two posts instead of adding more. Trying to keep this thread to a tolerable size.)
Keep the info coming! Look at the spreadsheet for what it needs.

107719 - 15.9 mpg no matter what my driving style. City, Highway, combined, windows open, sunroof open, traction control turned "completely" off.

Got mine Aug 23rd. It's a Winning Blue AT with 1650 miles.

VIN 109104.

22+mpg with 80% hiway. My best was 24+mpg with 95% hiway.
I usually get about 20-21mpg with 50/50 hiway/city.

I always use the cruise control to keep me at the posted speed limit (because if I don't get another speeding ticket this year my first one gets dismissed).

Originally posted by mngpao
I always use the cruise control to keep me at the posted speed limit (because if I don't get another speeding ticket this year my first one gets dismissed).

Congrats to your willpower.. I wish I had it. I got 2 tickets (neither one speeding) in the past 12 months and it takes 18 months here for one to fall off.. I mean 18 months until I can go to traffic school again.

Problem is that traffic moves at 70 - 80 mph with the right lane "only" 70. I tried the cruise control, but it's just unbearable and not worth the fuel economy.

:-(

Last night doing ~80 mph I suddenly recognize a cop in a white Camaro pulled over to the side lights down, nobody recognized or slowed down.
In my mirror I see him merge onto the freeway, pass me and he pulled the guy in front of me over to the side.

Sigh.

01129 ; 21.1 MPG overall average - most recent tanks close to 22 with DSC usually totally off.

VIN 106438
6 Spd GT
Southern CA San Diego
Freeway fast in morning 80-90MPH
Stop and go return home 20-50MPH
AC on mostly return home
Bad driving habits for mpg
13MPG until 2000mi
Now 14-15mpg 4300 mi

Someone said after first oil change MPG gets better.
I am close to the 5000, so will find out.

Paul

Someone said after first oil change MPG gets better.

you have 5k miles and you havent changed your oil yet? if you havent, i suggest you do so ASAP. i plan on changing the oil in my 8 at least every 2.5k

Hey guys, here's a new attempt to collect data, just in case you haven't seen yet. More questions, but that also means more info for all of us.

http://www.rx8club.com/showthread.php?s=&threadid=13280

We should probably stop this thread here or merge them, dunno

-Peter

just adding to your spreadsheet...

6 spd
GT package

100112 ...... 17.5 to 19.8
100717 ...... 16 to 25
100804 ...... 20 to 21
100849 ...... 17.5 to 23.3
100879 ...... 18 to 20
101058 ...... 18 to 21
101083 ...... 15 to 19 (10% highway)
101145 ...... 13 to 19
101212 ...... 21 to 22 (4600 miles-80% Hwy,15% City,5% 9K rpm)
101365 ...... 13 <-- LOW
101450 ...... 15.3 to 19.3 (mostly city to 60% highway, normally around 17-18, just once above 18.4)
101604 ...... 15.9 average after 2400 miles
101897 ...... 16.7 mpg typically
102878 ...... I get 12-17 (85% city mostly, 6 mile work commute)
102035 ...... 19.5
102058 ...... 18 to 21 ... 5300 miles
102974 ...... 17 to 23...2500 miles
103130 ...... 13 to 15 <-- LOW
103727 ...... 17.8 to 22.2
103841....... 13-20.5 (13 is hard driving, 20.5 is purely highway)
104226 ...... 15 to 17 (city)
105069 ...... 16 to 20
105899 ...... 22 to 23
105730 ...... 17 to 22
106064 ...... 13-15 mpg 1,200 miles
106206 ...... 15 about 50/50 for highway/city.
106429 ...... 17.3 to 21.3
106454 ...... 17.5 to 21
106647 ...... 14.9 to 25.6
106908 ...... 15.3 to 20.1 (avg 17.7 mostly) only 1400 miles on it.
107891 ...... 14 to 17 <-- LOW
108417 ...... 18 to 20 mpg
108583 ...... 18.3 to 19.5
108837 ...... 14.28 - 22.58, lifetime avg=17.36
109058 ...... 16.5 to 22
109161 ...... 19 to 21
110311 ...... 17 (on first 2 tanks, very new car)
112585 ...... 21 - getting a consistent 21 mpg (combo of city & highway)
113952 ...... 20 {Predominanatly city-type driving}

For what it's worth and this may confuse ppl, but.....

I just filled it up now to recheck.

The first time I filled was around 1/2 tank and got 20mpg

Now i was at 1/4 tank (filled 11.7 gals) now i avg 16.3mpg..

I will admit a few things, i have driven it a tad bit harder and today I drove around for a short while with 4 ppl in the car....

i don't know....go figure.

It looks like the numbers are up or down no matter what the VIN is. I dont think build date has anything to do with it.

Here's the updated spreadsheet....

and the updated graph...

Originally posted by hornbm
It looks like the numbers are up or down no matter what the VIN is. I dont think build date has anything to do with it.


Yes, I agree on that. But before we started doing this thread, we couldn't know, or? So now we're smarter.

And those 3 or 4 guys who constantly are below 15 mpg, they have now a list with lots of VINs, they can go to their Mazda dealer and use this list as leverage to get a new motor or whatever.

-Peter

Here's the bell curve...

vin **********106998

averaging 18.24 80% highway driving cruising at 75mph for 100miles.

Gets worse in the city.

Somewhere I read yesterday in a thread on drag and CD coefficient, that at a speed of 100 mph the RX-8 will yield only 10 mpg - does that sound anywhere realistic? I drive 80 all the time with 90-100 when the freeway allows it - and I still come out with 20 or 21.

Racer X-8: What's your background? You and I both appear to be "Numbers Moles".;) My background is economics. By the way, what's the Buckingham Pi theory?

14.8-17.8 90% city.

Hey there Norton,

I'm a mechanical design engineer. Lotsa numbers everywhere! :)

Buckingham Pi Theorem is a method that eliminates un-neccessary variables in analyzing unknowns. Pretty wild abstract stuff! I've used it & it works though. Not sure I know how though...craziness... :D

I just entered "Buckingham Pi Theorem" in the address and the search came up with several sites to check out. Bon apetite!

Oh yeah, it makes for a great CB handle too. ;) "Buckingham Pi, knockin on your back door, good buddy!"

100885

worst 13, usually 14 or 15 around town with a very heavy foot

best was 24, 65 MPH on cruise control for 200 miles.

Perhaps delivery date might provide more correlation to mileage than build date as it may reflect changes in ECU programming that I believe take place at the port. As tight-lipped as Mazda is being, they may have changed the ECU maps they load. Just a thought?

Also, while it would be interesting to gather about 15 points of data for the spreadsheet, it may not be feasible. But if columns were added for different things, it would be easier to search for correlations. One column I would like to see is the average distance per trip...as I think the 8 gets it's worst mileage when it's cold. If I am right, than this metric would be every bit as important as the city/highway mix.

BTW, nice excel work there Racer!

Originally posted by silver8
...BTW, nice excel work there Racer! Thanks!

I agree with you on average distance per trip, cold starts & city/highway mix. Like every other car known, these factors must affect fuel efficiency. What I'm trying to say here is, lets not re-invent the known factors that affect fuel efficiency. That's good stuff to know, then apply in a loose kind of way to justify your mileage in a relative way with the average combined mileage.

Like, take me for instance. My avg. mpg is 19.7 which is better than the 18.3 combined avg. Well, of the 2000+ total miles on my car, I took a 1500 mile trip to Florida. So, more than half of my car's history is cruzin' around on highway. I don't doubt that my real average mpg will settle down a good bit, and 18.3 sounds just about right. My avg before the trip was in the 17's & climbing, after the break-in period / after my engine got over it's newness & loosened up a tad. The trip avg was about 20.5

I like your thinking on delivery date at the port, that it may reflect changes in ECU programming which affect fuel efficiency. That also brings to me the engine build date, the engine builder & the recieving port.

We can forget about the engine builder, right? We'll never know his/her name.

Engine build date? Is that anywhere? I think there was something about that date...darn, I'm already forgetting...

We used to know a lot about the ships coming into port. I know my car left Port Jacksonville right at the end of July. Do the newer buyers have a clue about theirs? I don't think so.

That's all I can say at this time...

Norton might hit onto something with what he's doing in his thread...

Originally posted by Racer X-8

Engine build date? Is that anywhere? I think there was something about that date...darn, I'm already forgetting...


you can find out the build date by calling Mazda customer service and providing them the VIN.

Supposedly it can also be done on the web site where you can register with your VIN, but that web site and my browser didn't get along too well.

I haven't called Mazda yet, I always assumed that they give the number incremental.

-Peter

101021
13 city
25.5 highway.

101877
Mostly highway
15.82mpg combined

Originally posted by canzoomer
101877
Mostly highway
15.82mpg combined Canzoomer, wuddup! I'm gonna "pick on you", cuz you gave me what I need for the graph. You left out info for the spreadsheet though. If I wanted to knock out a graph to compare avg. mpg .vs. transmission type for example, there would be no data point for you, cuz I don't know what transmission you have. You probably stated it in another thread, but I'm not gonna go hunting for it.

Others (and I'm not talking about anybody, I'm just talkin' 'bout what I'm talkin' 'bout) have left me clueless about their combined average mpg. I can't use them. I've guessed some people's avg. mpg before, but I'm not gonna anymore.

The baseline info. that I need is only two things, and I need them both:

1) VIN
2) AVERAGE MPG

The other info is icing on the cake, but I need the first two bits of info. to get you on the spreadsheet.

And, as Elvis would say, "Thangk you verrrry muuuch".

Originally posted by Racer X-8
Canzoomer, wuddup! I'm gonna "pick on you", cuz you gave me what I need for the graph.
...
The baseline info. that I need is only two things, and I need them both:

1) VIN
2) AVERAGE MPG



Fair comment.
VIN: 101877 - one of the first batch over. #1877

Average mpg in "normal use ( I have been doing performance tunig, so I will leave those tankfuls OUT of the equation, as they are horribly skewed. You don't get great mileage on a dyno!

15.819mpg (US Gallon) or 14.869 liters per 100km

Originally posted by canzoomer
Fair comment.
VIN: 101877 - one of the first batch over. #1877

Average mpg in "normal use ( I have been doing performance tunig, so I will leave those tankfuls OUT of the equation, as they are horribly skewed. You don't get great mileage on a dyno!

15.819mpg (US Gallon) or 14.869 liters per 100km Canzoomer, what I wrote was that you were one of those that did give me both things that I need. You were OK with your first post & I already had you added to the spreadsheet before I even posted this morning. This last one had some of 9that extra "icing on the cake" that I was mentioning, so, good. (I still don't know your total miles, date when you got your car, transmission (MT or AT) & if you have the aero package.)

And let me make this perfectly clear...
I'm just using canzoomer as an example I used canzoomer cuz he already gave me what I needed, so, he done good & so he won't get pissed off at me...:)
I want everyone to give me at least the VIN & avg. mpg, like canzoomer did. Also, the other info on the spreadsheet is wanted, but not neccessary.

I was wondering how your persuit of extra horsies was going. Glad you're trying! Do you have a thread going on that topic? I would like to know how you're doing with it. I'm sure everyone else would like to know too...

Originally posted by Racer X-8

I was wondering how your persuit of extra horsies was going. Glad you're trying! Do you have a thread going on that topic? I would like to know how you're doing with it. I'm sure everyone else would like to know too...

Probably best to read this thread from page 8 on:
http://www.rx8club.com/showthread.php?s=&threadid=11614&perpage=15&pagenumber=8

Quest is done, now building parts and doing last beta testing with a coupleof other RX-8 owners and their cars.

Working with a sample of only one car is not enough, so wanted to do this last step, before we ship units to the public.

Fuel economy gains will ostly seen by drivers with an aggressive foot.
The biggest part of economy gain is to be had over 6,000rpm, so that is where we focused. Below that the stock mixture is actually pretty lean, so not so much there.

In other words, if you are one of the people like me who like to put the hammer down, you will gain about 2 to 3mpg.
If you shift by 3500 ( and already get better than 18mpg) you will gain little.

The baseline info. that I need is only two things, and I need them both:

1) VIN
2) AVERAGE MPG

Racer X-8: I'll provide the data you're looking for above in the results of the Regression Analysis. I have nearly 30 obs. so far. I'm hoping to get the results by this evening.

Thanks norton. I dunno why I didn't think of that...

CANZOOMER: OH MY GOD!!!!!!!

I don't know HOW I've been missing out on all that fun you've gotten yourself wrapped up into! That thread is totally new to me & I will take all the time required to catch up on all 1000 pages of it (OK, exagerating a little there). I've read enough though, to figure that you've been doing a terrific job, dude! I am thrilled!!!

Heh...heh...
It's been quite a ride so far.

I got a call from Mazda today and they wanted to know if I had a 6 speed or automatic! I have a 6 speed, and they said they were only wanting to talk with customers with an automatic transmission; apparently she said they had enough comments from people with 6 speed manuals. Perhaps this is just routine, but it's curious... I don't believe they ever called me for my other Mazda.
Any thoughts?

Hmmmm.

Maybe they only saw the info you gave me in your 10-22 post & didn't know that you PM'd me more info, including the fact that you had a 6 speed & wanted to verify that the info in my posted spreadsheet was accurate. Sneeky devils...:D

100082..........17-22

Originally posted by Jump120MPH
100082..........17-22 Wow! Tha't's the lowest VIN so far, I think.

Is your average 19.5?

Also would be nice to know the other spreadsheet entries for you. See page 7 for a look at the spreadsheeet...

Yeah its about 17 city 21 highway

1. 17
2. 50
3. A
4. 0717
5. Touring Package for A/T (18" wheels, etc.)
6. A/%
7. 93
8. Yes
9. 3,300
10. 25 (Usually s/r only; sometimes s/r + windows)
11. 60
12. DC

6. A/T

Originally posted by Mitch Strickler
6. A/T Mitch, it's understandable how you did this, but I think you meant your info to go into the Statistical Analysis Approach to Understanding MPG Issue (http://www.rx8club.com/showthread.php?s=&threadid=13280) thread. :eek:

(We'll use your info here as well.)

Bump

108802 ...... 15.3 to 20.5 (min-short trips to max-90% hi-way)

Avg 19.7 Looks like I'll make my first 300 mile tank on my current fill!

Hi, I had forgotten about my own thread already. I don't drive so carefully anymore since I had 7000 miles on the car, and my MPG dropped a bit, to sometimes as little as 19 with 90+% freeway driving.

Far from the <17 mpg numbers that a _few_ have posted here.

Here's a photo as I just approached the 10000th mile.. on highway 85. 3 minutes later I got my first ticket.

You can see the trip meter showing 261 miles with some gas left.
Yes, I'm in 6th gear there :D

SOOOOO just how fast were you going then?? :)

She clocked me at @78 mph; I cannot complain on that... because when I took the pics I certainly was faster than that. I think 5000 rpm is ~ 100 mph?

16.4 MPG AVG.
20 Miles Highway (no Traffic)-20 Miles City (NYC Bumber to Bumber Traffic) Daily
Vin # 112881

Originally posted by ptiemann
You can see the trip meter showing 261 miles with some gas left.
Yes, I'm in 6th gear there :D


Good to see I'm not the only one who can't take a non-obscured photo of the dash cluster!

This one I'm *not* in 6th gear (4th actually). This was a sub-15mpg run, but I'm not complaining as the tach was reading very similar to the photo for most of the preceeding 108 miles.

My VIN 111610 - A/T

Last four tanks:

13.41 MPG - 100% City (Town really - city is a stretch)
16.72 MPG - 60% City, 40% Highway
13.70 MPG - 100% City
14.24 MPG - 100% City

My VIN is: 101463
Build date is: 5/03
17 mpg city
20 mpg highway
I'm up to 2960 miles now.

VIN 100502
Average MPG (Sept-Dec) 17.2

Why haven't you merged the data from Norton's study

http://www.rx8club.com/showthread.php?s=&threadid=13280&perpage=15&pagenumber=6

a few months ago?

sorry.. can u convert my L/100km to mpg ?
i have 85% highways
one full tank of gas (about 50L?) :
carefully driven : 400km (12.5L /100km)
lots of revving : 300km (16.7L /100km)

last 6 digits of VIN : 124890

MY GAS FREAKIN SUX. HONESTLY.
MY VIN IS 127310 - MY MPG IS 13-15 ALWAYS... NO MATTER HOW I DRIVE. GRANNY OR HAUL A$$.

Build 8/2003
Vin 116188
MPG 16.9

JM1FE173240-----102438

AM i READING IT CORRECTLY?

12-17MPG?

123687

Built 11/04/2003.
7300 Miles, MT... Mostly spirited (when the wife isn't in the car...)driving on regular fuel.

19.654 Average (70/30 : City/Highway)
17.399 Minimum (during Autocross weekend)
23.712 Maximum (during highway long distance trip, cruise set at 78 most of the time)

Most miles on a tank of gas : 316.3

Overall, I'm happy with the milage. I didn't buy the car to save on gas, I bought the car to wake up and not be able to wait to drive to work. It's filling the role beautifully. :)

Just picked up a black,6sp two days ago, curious if I have this right I'm thinkin late November 03---(124050)? in door but not exact.

mine is 131365 canadian model GT the best millage i got so far with L version is 26/canadian gallons.

mine is 103456 and I average 17-19 mostly city driving

mine is 116188 and I get 16-18 city , 21-22 hwy.