I know there are numerous threads on MPG but with all the conversions to imperial for the UK etc it's a pain to equate it.

I'm more interested in how many miles you are getting to a tank full as I do 138 miles a day commuting (mainly on the motorway) and really don't want to be visiting the petrol station more then every other day.

I get anywhere between 260-330+ a tank. Occasionally less, but only when I'm doing strictly city driving.

Somewhere between 280 - 310 miles per tank.

I usually fill up after around 250 miles. The gas guage is at 1/8th of a tank. That is based on my combined city/highway driving...usually around 18-19 MPG. I'm taking a long highway road trip this weekend and will have better highway-only MPG numbers. What is your average speed while driving that 138 miles? If you do a good bit of city, you may need to fill up every day and a half.

138 x 2 = 276

Sounds like a fill-up every other day will work... especially if that's mostly highway miles.

Elara.. 260-330+? :eek:

Are you sure that you aren't missing a fuel injector? :D

Originally posted by Elara
I get anywhere between 260-330+ a tank. Occasionally less, but only when I'm doing strictly city driving.


have you really ever achieved 330 miles (US land miles) with one tank? Congratulations. (Edit: I just notice your + behind the 330. WOW!)

My red light has come on at ~

215
240
250
260
274
240

I'm on tank #7 right now. And I drive 90% highway, in off-peak hours.

My daily commute is ..

0.5 miles city to the freeway
45 miles freeway
1 mile city to work

You see I could've even claimed 96% highway :-)

The 330 miles with one tank seems out of *my* realm.

Originally posted by ptiemann
have you really ever achieved 330 miles (US land miles) with one tank? Congratulations. (Edit: I just notice your + behind the 330. WOW!)

The 330 miles with one tank seems out of *my* realm.

The light came on at about 310, and I drove it another 20 miles or so. I say + because I probably had another gallon or so in there (didn't test it though).

About 265 miles per tank here.

330 miles...you must have been drafting behind a bus!

Originally posted by ptiemann
have you really ever achieved 330 miles (US land miles) with one tank? Congratulations. (Edit: I just notice your + behind the 330. WOW!)

My red light has come on at ~

215
240
250
260
274
240

I'm on tank #7 right now. And I drive 90% highway, in off-peak hours.

My daily commute is ..

0.5 miles city to the freeway
45 miles freeway
1 mile city to work

You see I could've even claimed 96% highway :-)

The 330 miles with one tank seems out of *my* realm.

This is interesting, but might have nothing to do with having a "heavy right foot". In fact this could be an over sensitive tank sensor. To answer this we would need to know how much you can squeeze into your tank when the red light comes on and compare this to others with "higher" milage.

Yes, Elara's numbers are possible. :)

I usually wait until the light comes on to refuel. I'll have between 280-300 miles on the tank at that time.

The farthest I've gone on a tank was 351 miles. I put 14.4 gallons in when I refueled. Now that I know the car can't use all of the fuel in the tank, I shudder to think how close I was to running out of gas then.

Oh well, I got that out of the way a few weeks later. :o

Originally posted by loco4rx8
Yes, Elara's numbers are possible. :)

I usually wait until the light comes on to refuel. I'll have between 280-300 miles on the tank at that time.

The farthest I've gone on a tank was 351 miles. I put 14.4 gallons in when I refueled. Now that I know the car can't use all of the fuel in the tank, I shudder to think how close I was to running out of gas then.

Oh well, I got that out of the way a few weeks later. :o

Thank you Loco- I was starting to feel like a liar, even though I wasn't lying! Maybe I drive too much like a girl (ha ha).

Originally posted by loco4rx8
...Now that I know the car can't use all of the fuel in the tank, I shudder to think how close I was to running out of gas then.

Oh well, I got that out of the way a few weeks later. :o OK, you've captured my curiosity. What info have I not found out about? :confused:
Got what out of the way?!? :confused:

BTW, 24.4mpg - most excellent! Especially for Virginia ~^~^~^~. :D

No problem, Elara!

I should add that that one extraordinary 351 mile tank was almost completely interstate driving. I kept it on cruise control at anywhere from 73-82 mph, depending on the speed limit at the time.

However, 330 miles on a tank is not at all unusual for me, and while I don't cruise around in second gear on the highway, or burn rubber each time I take off from a light, I don't baby the car either. I redline it on each trip, sometimes more than once and am not at all shy about downshifting to third to get around slow traffic quickly. I DO keep it in 6th gear when cruising as much as possible.

I have an 80/20 highway/city commute.

Originally posted by Racer X-8
OK, you've captured my curiosity. What info have I not found out about? :confused:
Got what out of the way?!? :confused:

BTW, 24.4mpg - most excellent! Especially for Virginia ~^~^~^~. :D


Well, I DID run out of gas later, for which I received much ridicule on this forum. ;) However, what I learned from that was that the car will not use the whole tank. OR Mazda has lied about the capacity of the fuel tank, which would be a bit silly.

The tank is supposed to hold 15.9 gallons, if I am correct. When I ran out of gas, I had the opportunity to find out how much gas the car WILL use before it stops moving all together. I filled up to the brim, it wouldn't hold any more. And it accepted 15.3 gallons.

Man...you guys ARE serious. I need to go to Loco/Elara driving school :D

Just a question....what speed/rpm does everyone drive on the highway?

My fuel light comes on usually between 210-220 miles and I try to fill up around 200, so it seems like I'm closer to the low end here.

Originally posted by loco4rx8
Well, I DID run out of gas later, for which I received much ridicule on this forum. ;) However, what I learned from that was that the car will not use the whole tank. OR Mazda has lied about the capacity of the fuel tank, which would be a bit silly.

The tank is supposed to hold 15.9 gallons, if I am correct. When I ran out of gas, I had the opportunity to find out how much gas the car WILL use before it stops moving all together. I filled up to the brim, it wouldn't hold any more. And it accepted 15.3 gallons. Oh. Got it...

So, assuming we're all limited to 15.3 gal per fill-up, if AndyPierce wants to go 276 miles on a tank, that's 18 mpg. Being mostly all highway miles, that should be very do-able.

Sorry to find out that I missed my chance to ridicule you, loco4rx8. :( Wait! Is the thread still open? Lemme do some searching...:p

Originally posted by allstate
...Just a question....what speed/rpm does everyone drive on the highway? I usually drive about 7-8 mph over the limit, whatever that is. Occasional bursts of speed to get around/stay in front of somebody if it's deemed neccessary (for safety's sake - mine & the car's).

I just took a 1500 mile trip, so I got a few highway-mile-tank-fulls to look at. They all hovered between 20-22 mpg with a slight, but definite upward trend. My total mileage ended at 2225, so I'm still getting better.

I seem to one of the owners with a guzzler (my car has a drinking problem). I drive about 10-20 miles after the low fuel light comes on and get between 220 and 240 miles on average. I once hit 251 miles and was ecstatic, but it took 14.8 gallons to refill - usually refills are about 14 gallons.

Originally posted by pelucidor
I seem to one of the owners with a guzzler (my car has a drinking problem)... You aren't using gasohol, are you? Alcohol / gasohol, get it? Har har :D Need to send your car to gasoline go-non-ymus. Hee hee.

Uh, sorry. :cool:

Any idea what it is yet at all? That 17 mpg tankfull is hardly bragable...

I got the 330 miles in all highway driving, going between 73-85 the whole way. The car seems to be happiest between 70-80mph, for some reason. Two tanks ago, I barely got to 200 and the car had about 1/8th of a tank left. So I don't get nice mileage ALL the time...

my orange light comes on around 215

you guys suck j/k kinda

Thanks for all the replies guys (and gals;) )

It seems like I should have been a bit more specific to find the distance people who do similar types of journey at similar speeds get out of their tank. I do 20 miles on B roads (very twisty single track roads - should be the most fun part of the trip in the RX8:D ) driving at about 60mph, 43 miles on the motorway cruising at about 80-90mph and then the last 5 queuing in city traffic (probably average of 20mph.)

As much as I'd like to get 330 miles out of one tank I don't think I could stand driving on a UK motorway at 70mph (even though it's the legal speed limit very few people drive at that speed.)

HOLY COW, I NEVER GOT TO THE 200 MILE ZONE
I always had to fill my tank at 180 or so.. it has about 1600 miles on it..

but I have been pushing it every time I get off the line. out of my driveway... zip pass a few red lights... and do routine burn outs in front of police stations.. before I get to school

I get about 150 glorious miles (consitently- city driving) before my gas light comes on- so I'm guessing about 180 max.....

But someone else (maybe a Mazda employee) will soon be driving my wonderful guzzler.

190 miles today and the light went on.

I have a 20 mile drive to the dealer, hopefully I'll make it to turn it in today.

I am in total shock at the mileage that everyone is reporting with their cars! I am lucky if I get 180 out of a tank, but then again I refuse to drive a sports car like a granny either. Whats the use in having it if your gonna drive it like its a Chevy Lumina. Get out there and start driving your car the way it was intended to be driven.

I'm trying to figure out why I only get 12 mpg ( If I'm lucky ). 3500 miles on the 8.

I have tried shifting at 3500 RPM, and driving modest. You can only drive so fast in the suburbs of Atlanta. Maybe it's all the stop and go traffic. I need to get out and take a road trip to see if my car is capable of being more efficient.

I'm having to come to the relization that I'll be spending $4000/year on gasoline. I still love to drive my car, it's just that I frequent the gas station much more often.

My low-gas light usually comes on around 200-220 miles into the tank. I've had it come on at 250 after a cruise from San Diego to Burbank and back in off hours with no traffic (cruise control on most of the way, but getting up to 95 or so around San Onofre/Pendleton etc)

The worst tank I had was after some very hard twisty driving where I was in 2nd gear most of the time at 6k+ RPMs (the same run I discovered the rev-limiter) - in that case I got under 200 miles on the tank.

I'd say my typical tankfull takes me 230 miles.

Simon.

190
180
195
190
200
190

My goes back to mazda tomorrow....
If I got Elara's.. It probably would not be going back...

Roachman

wow

this thread got depressing fast

roachman, what do those miles represent? When the light comes on, when you have to fill it, both?

Gallons are really needed to get the whole story. I think 15.3 gallons is max. per tankful, so, knowing your mpg (example = 18);

18mpg x 15.3gal = 275 miles per tankful (est.)

You can add more miles past when the light comes on. The light just tells you that it's time to start thinking about getting gas soon.

Good questions...
Those miles are when I filled up the tank. The light came on earlier.

The times I went over 200 miles, I was really scared and I put 14.5 gallons in...

Most of the time I was putting in 13.8 -13.5 gallons...

Roachman

Oh yea... I guess from this it is obvious I got pretty crappy MPG... around 14mpg..

This plus the heat the engine put into the cabin and my garage are the main reasons I am sending it back..

It breaks my heart, since I put money down in Oct 2002 and sat on this forum everynight for 8 months....

Roachman

I know. 14mpg - that sucks. Get another one again sometime. Hey, in the winter, :obvious

:(

hmm... I always fill up at half tank (its cheaper that way) at about 140-150 miles, my daily trip is about 5 miles country roads, 3 miles super speedway, and 3 miles city.

... on a road trip I got 23mpg with sitting in a dead stop traffic jam for almost an hour, 15.3 gallons would put me at 350 miles:p

one thing ive noticed about this car is that it accelerates so effortlessly, it is easy to accel A LOT faster than really necessary. you can skip shift 1-3-5 at 2800 rpm and it drives just fine. dip into the go pedal and it is designed to eat gas :)

i know my 94 probe GT would get 30+mpg in steady driving, 22 in aggressive commute driving, and 8mpg on the track. so it really can vary.

james

roachman
how many miles on your 8

Originally posted by tripwire
I'm having to come to the relization that I'll be spending $4000/year on gasoline. I still love to drive my car, it's just that I frequent the gas station much more often.

Even if I manage to get 20 MPG (imperial) from my RX8 I'm still looking at approx $8,400 a year on petrol!:eek:

Seems like I'm going to get lighter shoes if I'm to avoid putting petrol in every day.:(

196 was my worst

My fill light comes on at 390/400 kms (250 miles) and the fill is almost exactly 50 litres. Mostly highway at 70/75 mph.

So, roughly almost 23mpg.
.
.
.
doc

[QUOTE]Originally posted by Ophitoxaemia
[B]one thing ive noticed about this car is that it accelerates so effortlessly, it is easy to accel A LOT faster than really necessary ... dip into the go pedal and it is designed to eat gas :)


I think Ophitoxaemia has hit upon a very important point. I too have noticed that I tend to accelerate much more, even in city traffic, than I used to because the acceleration is so smooth and the car is quiet. So much so that I really have to concentrate not to do this.

Perhaps some of the people who are experiencing lower gas mileage than others aren't suffering because of the quirks of their particular cars--which is what some posters have assumed--but because they are--like me--more susceptible to the tempation.

351 miles!!!
are you sure?
:eek:

351 miles in 61L tank
that's mean the fuel consumption is around 10.8L/100km!!!
the offical number from mazda is around 12.6L/100km.
That's the number you'll get if your shift under 3000rpm

Originally posted by thklam
351 miles!!!
are you sure?
:eek:

351 miles in 61L tank
that's mean the fuel consumption is around 10.8L/100km!!!
the offical number from mazda is around 12.6L/100km.
That's the number you'll get if your shift under 3000rpm


I'm absolutely positive. But remember that one tank was almost 100% interstate/highway driving at around 70-80 mph using lots of cruise control.

A 330 mile tank is more the norm for me, and I DO NOT shift at 3000 rpm except right after I start the car cold in the morning. I usually shift around 5000-6000 rpm.

I don't have any idea if the make order has anything to do with mpg, but can't hurt if you post your VIN's at ptiemann's thread to see if a correlation exists:

http://www.rx8club.com/showthread.php?threadid=12965

The low mpg, interior cabin heat, and A/C issues really have me wondering if I'll be happy with the 8 beyond a year or two. I might be more forgiving of the heat/AC issues as we get into the fall/winter months, but the MPG issue is definitely cause for concern. I'd be kicking myself if I happen to get a < 17 mpg on the highway unit.

I too have noticed that I tend to accelerate much more, even in city traffic, than I used to because the acceleration is so smooth and the car is quiet. So much so that I really have to concentrate not to do this.

Luckily, I don't concern myself about it, yet I do agree my starts are much more spirited with the RX-8. I go to redline at least once each drive.

Well, I decide to follow the advice of Mikeb's No Fear shirt, Drivr It Like You Stole It...

171 miles with 9 miles with the light on. 91 octane.

It was worth it .....

Check out this thread (http://www.rx8club.com/showthread.php?s=&threadid=13004) for thoughts on gas mileage.

3 words...

Company Gas Card

The following is data I posted ont he 87 Octane thread.

While we were getting 18.5-20 in 8 and 20.5 to 21.5 in the other, I like many are looking to improve mileage, hopefully without any change in performance.

Some are experimenting with 87 Octane, I chose to try 89.

-----------------------------------------------------------------------------
We have been running 93 Octane because 91 was so hard to find. Based on this thread, I put 89 Octane in my wife's RX-8 to see if there were any differences in performance. First, we live at sea level, (Tampa FL), the temp was 84 today and a little humid. I put 14.2 gallons in so any remaining 93 Octane gas was significantly deluted.

I ran it on the interstate first and noted a some sluggishness for the first 5 miles or so.... or so I thought. After that, it seemed to run very will. I especially noticed good acelleration in 2nd and 3rd up through 6500RPM. I also jumped on it and hit 100 in 5th.

At present we have 80 miles on the tank and I got 68 out of the first quarter tank based on the guage. In comparing this to my RX-8, it seems to be getting as good or better gas mileage.

I will post data when we fill up. I know that some are using 87 Octane, I just thought it would be a less risky approach.

Lastly, please note that I am doing this to my wife's 8 so I cannot keep exact data on mileage cause she drives completely different from me. She runs in 3rd and 4th much longer than I do.

---------------------------------------------------------------------------------
89 OCTANE Update

No loss in performance... just when past 160 miles on first half of the tank. This is about 10-20 miles more than we normally get on the first half of the tank. If this continues, I expect to pull approximately 300 on this tank. From half to on quarter seems to last a while and then it drops like a rock the last quarter.

---------------------------------------------------------------------------------

I should have data on the MPG for the first tank of 87 today.

My results as of late. 330+ ?? Hard to believe.


Mileage Gallons $/gal Total m/gal Trip
309 13.447 $1.719 $23.12 16.81 226
569 14.235 $1.699 $24.19 18.26 260
800 14.216 $1.799 $25.57 16.25 231
999 12.538 $1.699 $21.30 15.87 199
1207 13.727 $1.719 $23.60 15.15 208
1435 13.001 $1.669 $21.70 17.53 228
1698 13.119 $1.639 $21.50 20.06 263
1968 13.815 $1.699 $23.47 19.54 270
2214 12.797 $1.733 $22.18 19.22 246
2485 14.079 $1.519 $21.39 19.25 271
2740 13.900 $1.589 $22.09 18.35 255
3001 13.449 $1.649 $22.18 19.41 261
3289 14.422 $1.559 $22.48 19.97 288
3557 14.404 $1.599 $23.03 18.61 268
3838 14.287 $1.499 $21.42 19.67 281
4041 13.202 $1.519 $20.05 15.38 203
4245 10.417 $1.579 $16.45 19.58 204
4455 10.769 $1.579 $17.00 19.50 210
4695 12.008 $1.499 $18.00 19.99 240
4903 13.700 $1.459 $19.99 15.18 208
5154 12.973 $1.449 $18.80 19.35 251
5406 12.990 $1.499 $19.47 19.40 252
5712 15.001 $1.419 $21.29 20.40 306
5950 11.863 $1.459 $17.31 20.06 238
6208 13.243 $1.359 $18.00 19.48 258
6459 12.841 $1.479 $18.99 19.55 251
6718 14.003 $1.499 $20.99 18.50 259

Originally posted by LambertRX8
My results as of late. 330+ ?? Hard to believe.



Believe it.

I think it would be interesting to build a matrix listing mileage by state/region and octane used. I have been doing some reading, and I wander if the "reformulated" gas sold in CA and a section of the northeast may be the problem. Also those using corn gas may want to provide data. Just a though...

oh my friggin god... you guys are getting over 300 miles on a tank
!!!! what the hoochies!!! im in 6th gear by 50 mph. shifting like a mo'f#ing grandma happy to break 220 miles on a tank..... im pissed.

My last few tanks have been surprisingly bad. So much so that I'm now trying to see if shifting at 3k RPM will make a difference. I was averaging about 240-260 before the light came on when I wasn't running the AC. My last tank, I ran the AC and got 220.

So far I've only been above 3000 when absolutely necessary and when in 6th gear, going 80 or so down the highway (texas traffic is like that). I probably average about 60/40 highway/city. We'll see how it goes.

Most of the tanks of gas I've run were 93 octane. This one is 89. The best tank I've had was 318 on amoco ultimate(93) on a 90/10 stretch of city highway. I actually seem to get the best mileage out of Amoco gas and the worst mileage out of Shell gas (strange to me as I've always bought shell/texaco). Anyway, this tank is chevron and I currently have about 70 miles on it and i'm still just above 1/4 mark on the gauge, however we know how accurate this gauge is.

I get about 200-215 out of tank but mostly city driving. Maybe 5% on the highway. Looking forward to driving to Alabama in October to see what I get on the highway.

I think if you shift too early you'd end up burning more gas to get to the speed you want. It is like you are trying to reach 70 from 40 in 6th rather than up to 60 in 5th and then to 70 in 6th. I believe the former would take more gas. Or am I wrong? Please conrrect me if I am wrong.

Well folks, my wife and I are amazed to see that our mileage is creeping UP!!!

We are both getting 21 MPG. Both cars have over 14000 miles and the improvement seemed to start around 12000 miles.

Of note, we are both mixing 89 and 93 octane to get an average of 91.... or as close as we can.

I have a Canzoomer Stage One on order so that will be interesting to compare with my wife's car which we plan to keep stock.

Thanks

With the stereo cranked, it's so smooth that I end up shifting out of 1st and 2nd around 6000; but for better mileage, I'm going to try taking the lead out a little and shift around 4000.

Of course, slow vehicles beware because I do DOWNSHIFT!

My 8 has been pretty consistant at doing 230 - 240 miles before the low fuel light turns on.

But I'd guess about 80% of my driving is city, and it's always with AC on.

I usually get 300KM not miles So about 187 miles...God to get 480 km would be almost as good as ***

well, i know my last 2 tanks were bad because i did a few very high speed (120+) trips up the highway just because I could. No racing, but high speed driving late at night is kinda fun and a gas killer.

Worst for me was when I first got my Rx8 (after the initial break-in period) - I consistently averaged between 200-220 miles per tank regardless of driving style

Now my gas light comes on at 220ish and I usually fill up at 250 (using between 13.5 - 13.9 gallons).

My best mileage was on a road trip down to LA not too long ago. I averaged between 260 - 290 miles per tank, and that was with going 90+ on hwy 5.

In general, I'm a spirited driver, so I really don't mind the 220-240 I average.

hey it seems that cruise on highways at or under 3750 rpm and shifting under that same rpm in city driving is the way to break that 19~20 mpg barrier. But has anyone considered load vs rpm? How does rotories react to heavy load (lower rpm) driving?

My worst tank of all around town driving is about 220 miles and the lite comes on needing about 13.5 gals (about 16.5 mpg). The last two tanks all hwy 371 and 375 (about 27.5 mpg) thats with cruz on and being good at 65mph, but its no fun and hard to do. I normaly get 23-24 mpg on hwy no cruz having some fun. I use 87oct on freeway where I'm cruzing and when I'm gona have some fun around town I use 91oct.....what a fun car

I am on my first tank of gas since I bought my car, and the light came on at 235 miles. Have you guys notest the mph getting better as you get more miles? What Octane have you guys been using and where do you get it from?
Rx-8, 350 miles so fare, I am in texas and have been using the S**t out of the ac.

Sup Ya'll - I have been monitoring this board for several weeks now. I love the 8, but the potential gas mileage issues seriously scare me. There seems to be no reason why some owners get relatively good mileage 18+, and others get 12-13 MPG. With gas prices at $2.50 per gallon, and going up, I question the wisdom of purchasing a car that may get such poor mileage. Some of you getting 180 miles per tank is insane. How do you tell if you are getting a "good one" just by a test drive? I am also considering a WRX (performance very close) but it's butt ugly when compared to the 8 IMO (no offense intended to WRX owners - great car). Then I read senior members here trading in their 8's and getting killed on depreciation$ Perhaps the 05 turbo Legacy? What the f^*k to do?

13.5 gallons per fill up usually gets me a bit over 200 miles. That is 100% city driving and the majority of my trips are under ten minutes.

301.5 / 14.33....

21+MPG

Would have been better but I caught myself cruising in 5th a lot at 65 after coming out of a construction zone.... just not paying attention.

Holy cow! 350+ MIILES on a friggin tank. I would poop all over myself if i got over 250+ on a tank.. my best tank of gas to date... from a completely full - top'd off tank to driving way into the orange gas light has been 211 miles. yielding me a unimpressive 15 mpg... thats at best.. and that was on a road trip from dallas to austin. which was 100% highway..... and still not over 15 mpg.. HOW DO YOU DO IT?!?!?! someone tell me the secrets to achieving higher gas mileage. where are your shifting points. i shift between 3k and 3.5 k
.. i did find however 87 octane gets me around 200-210 on a tank.. 91 octane gets me 160-175... lower octane = higer mileage. anyone else?

mine was 225 evry time the light came on .now im getting 260 by disabiling the TCS/DSC. my drive consist of city drive 80%of the time speed limit is 45 but in city drive it alot of stop and go.i would love too see even close too 300mpg but if i have too give up hp then i'll stick too 260 and be happy

400 km on my last tankfull of premium. That's about 250 miles. But I was doing the engine break-in so I basically taking it real easy.

Finished engine break-in so now driving the car harder. We'll see how much fuel economy suffers.

Three tanks burned through now, and consistently getting around 16.7 - 17.9 mpg. Mixed driving, rural roads, no real open highway, occasional redlining.

That carries me for about 200-230 miles before I'm looking to feed again (1/8 tank or so left, but no warning light yet, so I could probably push my luck to 250 or so).

Mileage is up to 21.26.

301/14.15

Regularly get 290-300 per tank


My stage one sytem just came in. I will install and resport mileage after system stablizes.

WOW, 330 miles a tank.........that's amazing!

Mine is 230 without the M flash yet. We'll see?????

RENE

Just finished my very first tank this morning. 253 miles/13.492 gal = 18.75mpg (light came on at about 245). A little lower than I hoped for, but I'm ok with that. What really hurt though was freaking $2.50/gal for a fill up with 89. Ouch!

By the By....

My mileage got better as soon as I started using 91 octane. Owners manual states that 91 is the "Premium" grade the car was designed for.

I have noted others using less than 91 and also getting good mileage. I keep mine at 90-91 by mixing 87-89 and 93 octanes. Hard to find 91 here.

As I have stated in the past, I think some of the mileage problems are related to the local gas types and quality.

As for me, if I am averaging 21+, I am getting what Mazda advertised as the MPG for the vehicle... and having fun.

I have 2800 miles on mine - I use 87, 89, or 91 octane and have the most recent flash. I tend to get about 18 mpg in mixed 70/30 (city/hwy) driving. The last long trip with all highway miles was before the M flash, so my all highway number should go up. ( I think the tanks at all highway were ~21 mpg). I seem to shift before 7000 rpm (mostly:)). Shifting to 5th for crusing in town (~40-45 mph) seems to keep the gas consumption down, but what fun is there in that? Life is too short to drive boring cars!...

im getting 15 mpg and about 180 miles per gallon :( with about 1/6th left 1800 miles with m flash

i dunno about u guys (i'm still in the first 1000km), but i haven't gotten more than 360km out of a tank yet.... and thats going almost to the limit. filled up 57 Litres out of 61 Litres(total) once and only got 355km on the trip metre.

Sounds about right. First couple of tanks went thru lots of stop and go driving was around there. These days getting almost 400 km.

If I drive all city driving I get 13 mpg. With all highway driving I get 24 mpg. My light typically comes on a 240 miles.

Since the M flash, my yellow light comes now on around 290 miles, no matter whether I drive 60 or 80 mph.
I do not "cruise at 6000 rpm" as I suspect some others here are doing it.

Got around 200 per tank on mine no matter what style of driving or grade of gas. Best tank was 240 with 100% highway driving (cruise set at 65).

MPG issue was one of the reasons I no longer have the 8.

Bet that 15.3 gallons caused you a shiny penny. I have to go every half tank to make me feel better about spending the money on gas eventhugh it all comes from the same monthly budget.

I get about 180-190 mi out of a tank. Have not yet gotten the M flash, but don't think it's gonna do much for fuel economy.

260+ out of a tank...21-23 MPG.