gas mileage
Thread Starter
Melting Slicks
Joined: Jul 2007
Posts: 2,146
Likes: 31
From: Minot North Dakota
St. Jude Donor '12-'13-'14-'15, '21
gas mileage
I keep hearing about these vettes getting 25-31 mpg when does this happen. I have a littel under 600 miles on my 08 6 speed. I've driven on the highway and in town and the best that I have gotten was 15.8. Around town I get anywhere from 13.5-14.7mpg. I haven't lit the tires up yet and I really haven't rodded it due to trying to break it in the right way. So does it take the motor awhile to loosen up and bring the better numbers or are mine about right. MPG is not the reason I bought the car, however I see the higher numbers regularly and just wondered if it takes awhile before the better MPG's start showing up.
Le Mans Master
Joined: Sep 2004
Posts: 5,707
Likes: 4
From: Los Angeles
That 27-30 range is achieved when you are talking about highway only. That means resetting the average readout once you're on the road. If you are not getting anywhere near that, you have a problem you need to get checked out.
Racer
Joined: Dec 2005
Posts: 363
Likes: 13
From: Dallas TX
In my 08 with 1500 miles, I get ~16-17 mpg city and 26-28 mpg highway @ 70-75 MPH. I've noticed from the instanteous MPG readout that the dead stops hurt the most, so I try to get to my speed somewhat quickly then cruise at a constant speed as much as I can to average out a good city MPG rating.
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Burning Brakes
Joined: Jul 2004
Posts: 1,142
Likes: 74
x
We have an '06 coupe with the 6 speed auto. When we go on a trip of usually a couple hundred miles we will fill up off the interstate and figure the mileage the old fashioned way, not on the cars computer but getting off an exit and filling up and taking a calculator and always get at leat 30 mpg. Have had up to 32. Now thats driving @ 5 mph over the speed limit,usually around 70 to 75 mph & TRYING to get good mileage. Not jumping into the throttle to go around folks. Now when you get your foot in it ,-- mileage drops off pretty good-6 to 9 mpg depending on how & how many time you goose it. Now this car is my wifes daily driver for going back & forth to work & gettin groceries, & she tells me around town per the cars computer she is averaging aprox 24 mpg, & she drives pretty normal for a girl ,only ocasionally(maybe a few times a week) showing off a bit. So it all depends on how you drive it. If you want to enjoy the performance frequently you are gonna have to pay for it(with gas). BUT this car has the potential to get what you want when you want it,either mileage or performance- just not both at the same time. Dont be unrealistic & think you can dog it & still get great mileage.
Safety Car
Joined: Jun 1999
Posts: 3,570
Likes: 3
From: Austin, Singapore, Kuala Lumpur, Houston, Dallas, Hong Kong, Elgin, etc.. Texas
Advanced
Joined: Apr 2007
Posts: 77
Likes: 0
From: San Diego California
Here is mine (about the same as most others): 2008, 6spd, convertible w/ 2000 mi. I get consistent 25+ on the highway (mostly fast highway when I can get away with it), and 18+ around town. This is one of the best MPG vehicles I have ever owned; my other vehicles, which are SUPPOSED to get great gas mileage, don’t even come close. At best, my Ford diesel pick-up only gets 18 mpg on the highway, at best, and my 5 cylinder, 07 Chevy Colorado pick-up only gets 21- 22 highway with 15 -16 around town. Now to be fair the Vette weighs less and has much better aerodynamics than either of the trucks, but I also drive it much harder which is always worse for mileage. So far I have no complaints with this car! 
Race Director
Joined: Mar 2007
Posts: 11,331
Likes: 18
From: Missouri City Texas
On the freeway at 80mph cruise control I will get right at 28mpg (went on a 150 mile trip this last weekend both ways and averaged 27.8 on the freeway)
If I stay in town and do NO freeway driving I will get about 18-19mpg.
Right now on a mix of city and freeway (mostly freeway) I'm at 25.0 mpg.
07 A6 with axle-back borla sports.
If I stay in town and do NO freeway driving I will get about 18-19mpg.
Right now on a mix of city and freeway (mostly freeway) I'm at 25.0 mpg.
07 A6 with axle-back borla sports.
Le Mans Master
Joined: Nov 2004
Posts: 6,566
Likes: 2
From: Goleta CA
Cruise-In VIII Veteran
I never saw 30mpg until I got a tune. Stock, the best I saw was 27-28. Around town, anywhere from 12 to 18, depending on my behavior. The way the car is driven has a huge affect on fuel efficiency. At the track, I only get 7-8. 
Thread Starter
Melting Slicks
Joined: Jul 2007
Posts: 2,146
Likes: 31
From: Minot North Dakota
St. Jude Donor '12-'13-'14-'15, '21
Well I am going to print all of your responses and take them to my local chevy dealer so they can't tell me my low mileage is average. I don't rod the car and when traveling I usually run about 75 miles per hour. There is a big enough diffference that it might need to be tuned a little at the dealership. Thanks for the input, it may help my case. Of course I am nervous about a local dealership tune but what are my choices??????
Burning Brakes
Joined: Jun 2004
Posts: 1,200
Likes: 14
From: Playa Vista CA
poor MPG
Well I am going to print all of your responses and take them to my local chevy dealer so they can't tell me my low mileage is average. I don't rod the car and when traveling I usually run about 75 miles per hour. There is a big enough diffference that it might need to be tuned a little at the dealership. Thanks for the input, it may help my case. Of course I am nervous about a local dealership tune but what are my choices??????
Joe
Le Mans Master
Joined: Jan 2002
Posts: 5,891
Likes: 1,199
From: Ft. Myers FL
My M6 '99 C5 I easily could get 29-31 on an extended long highway trip. With my 06 A6 my mileage isn't nearly as good since I average about 27/28 on a long trip ( also around 70-80 mph) and only 20/21 after a day at Englishtown. However, why don't the "powers that be plus AL Gore & his greenie Demo pukes" push to get street lights sycronized. 
That would save millions of gallons of gas. I waste more gas at useless lights every day than racing at E. Town. 
That would save millions of gallons of gas. I waste more gas at useless lights every day than racing at E. Town.