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Let's compare VIN numbers and fuel economy

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Old 10-20-2003, 11:58 AM
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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.
Old 10-20-2003, 12:04 PM
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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.
Old 10-20-2003, 01:23 PM
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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..
Old 10-20-2003, 01:40 PM
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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.
Old 10-20-2003, 01:49 PM
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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.

Last edited by Racer X-8; 10-23-2003 at 09:32 PM.
Old 10-20-2003, 02:05 PM
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112741 20 MPG every fill up give or take

Mostly city driving; 1,500 miles; no DSC/TC
Old 10-20-2003, 02:30 PM
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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)
Old 10-20-2003, 03:21 PM
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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.
Old 10-20-2003, 03:28 PM
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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}
Old 10-20-2003, 03:47 PM
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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)
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.
Old 10-20-2003, 04:19 PM
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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.
Old 10-20-2003, 05:37 PM
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114502

20 city / 26 highway

300 miles in 3 days of ownership
Old 10-20-2003, 06:21 PM
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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?
Old 10-20-2003, 06:26 PM
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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.
Old 10-20-2003, 06:27 PM
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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}
Old 10-20-2003, 09:25 PM
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my 6 digits are: 106206. I am getting about 15mpg. about 50/50 for highway/city.
Old 10-20-2003, 10:01 PM
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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}
Old 10-20-2003, 10:02 PM
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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.
Old 10-20-2003, 10:08 PM
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102035 - typically 19.5 MPG
Old 10-20-2003, 10:20 PM
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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.

Last edited by Racer X-8; 10-23-2003 at 09:30 PM.
Old 10-20-2003, 10:28 PM
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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.
Old 10-21-2003, 12:16 PM
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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
Old 10-21-2003, 04:04 PM
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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.
Old 10-21-2003, 05:56 PM
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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.
Old 10-21-2003, 06:07 PM
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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


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