C5 Gas Mileage
Melting Slicks
Joined: Oct 2005
Posts: 2,989
Likes: 352
From: Carson City Nevada
Uh oh, you're going to get all kinds of responses for this. My manual gets around 32 mpg on the highway and about 25-26 mpg around town. I've had a couple of auto c5's and they were just a few mpg worse. Again, you're going to get a lot of different answers, but you should be around that.
Le Mans Master
Joined: Sep 2014
Posts: 5,278
Likes: 539
From: Kelowna BC
What's normal driving conditions for you?
Normal for me is city only with a heavy right foot fairly often (Z06, so manual of course, and bigger cam etc. so worse mileage anyway). My car tells me 15.9 MPG average.
Normal for me is city only with a heavy right foot fairly often (Z06, so manual of course, and bigger cam etc. so worse mileage anyway). My car tells me 15.9 MPG average.
Team Owner
Joined: Jun 2008
Posts: 29,252
Likes: 176
From: Blessed are the cracked. For they are the ones who let in the light.
St. Jude Donor '08 thru '26
City/Highway?
around town any where from 15-17, highway. I get 28 if I am playing nice.
For old 2003 stock , about 17 city and 30+ on level highway crusin in 6th.
around town any where from 15-17, highway. I get 28 if I am playing nice.
For old 2003 stock , about 17 city and 30+ on level highway crusin in 6th.
Pro
Joined: Aug 2016
Posts: 667
Likes: 162
From: Jennings LA
Most of my driving is just cruising about the back roads. Probably 10% town. Mostly just use regular gas with up to 10% ethanol. Been averaging 23 to 25 mpg for the last 10K miles. I keep a log on everytime I put gas in my vehicles.
Last edited by awches; Mar 26, 2018 at 05:25 AM.
Burning Brakes
Joined: Jun 2017
Posts: 1,045
Likes: 276
From: Wichita Falls Texas
I've had my 03 vert automatic for just under a year and I get around 24 mpg average.
That's total average, around town and on the road.
I use 89 octane with a bottle of Techron every other tank.
I don't push it. Just cruise about 3 above on the highway and putt around in town.
That's total average, around town and on the road.
I use 89 octane with a bottle of Techron every other tank.
I don't push it. Just cruise about 3 above on the highway and putt around in town.
Last edited by Grandpa1; Mar 26, 2018 at 05:41 AM.
Thread Starter
Instructor
Joined: Feb 2018
Posts: 103
Likes: 29
Well, I'm not getting near those numbers. I had a 92 vette and it got 26 to 27. Now I have a 2004 coupe and it gets 11 to 15. This stinks big time. I thought it would at least get in the 26 range. You know, better technology and all that stuff combined with a cd of .29. This car had or has the lowest air drag of any car in the world. I think something is wrong here. Anyway, car has 37,000 miles on it and I was expecting at least the same mileage I got with my older vette.
Thanks
Tony
Thanks
Tony
Burning Brakes
Joined: Jan 2008
Posts: 1,235
Likes: 51
My car is cammed. I always fill up, reset trip, and drive till the light comes on. I get about 300 kms. I have no idea how to calculate miles per gallon.. i think my fuel consumption is horrible. Maybe its the tune??
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Drifting
Joined: Nov 2016
Posts: 1,820
Likes: 411
From: Somewhere in the middle of Kansas
I would consider having it looked at. Does it sound good when its running? Power seem ok?
Thread Starter
Instructor
Joined: Feb 2018
Posts: 103
Likes: 29
Sounds great running at idle or throttle. Runs like a bat out of hell. All stock motor. No mods. Just seems like I should get at least 22 to 24 mpg. I drove my 92 coupe spirited most of the time and was able to get 26. I know what I would get if I floored it. Gas goes really quick when you stomp it. I find it hard to believe that my 92 gets getter gas mileage than my 2004. If they have the Technology, what happened .... Lol
Thanks
Tony
Thanks
Tony
Drifting
Joined: Nov 2016
Posts: 1,820
Likes: 411
From: Somewhere in the middle of Kansas
Sounds great running at idle or throttle. Runs like a bat out of hell. All stock motor. No mods. Just seems like I should get at least 22 to 24 mpg. I drove my 92 coupe spirited most of the time and was able to get 26. I know what I would get if I floored it. Gas goes really quick when you stomp it. I find it hard to believe that my 92 gets getter gas mileage than my 2004. If they have the Technology, what happened .... Lol
Thanks
Tony
Thanks
Tony
Administrator
Joined: Mar 2001
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From: In a parallel universe. Currently own 2014 Stingray Coupe.
C7 of the Year - Modified Finalist 2021
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St. Jude Donor '03 thru '26
NCM Sinkhole Donor
CI 5, 8 & 11 Veteran
My ‘03 A4 gets 26-27 mpg out on the highway (I use cruise control a lot and go maybe 5 over on the speed). Around town, I get 16-18 mpg - we have a lot of hills in this town.
Racer
Joined: Jul 2003
Posts: 333
Likes: 31
From: PA
You don't need a scanner on a C5. You can pull them right from the DIC on the dash.
EDIT: found the link. Video in first post shows how to pull the codes: https://www.corvetteforum.com/forums...ion-files.html
EDIT: found the link. Video in first post shows how to pull the codes: https://www.corvetteforum.com/forums...ion-files.html
Last edited by joezr2; Mar 26, 2018 at 11:47 AM.
Drifting
Joined: Nov 2016
Posts: 1,820
Likes: 411
From: Somewhere in the middle of Kansas
You don't need a scanner on a C5. You can pull them right from the DIC on the dash.
EDIT: found the link. Video in first post shows how to pull the codes: https://www.corvetteforum.com/forums...ion-files.html
EDIT: found the link. Video in first post shows how to pull the codes: https://www.corvetteforum.com/forums...ion-files.html
Team Owner
Joined: Dec 1999
Posts: 34,873
Likes: 487
From: Lacey WA RVN 68-69
NCM Sinkhole Donor
Well, I'm not getting near those numbers. I had a 92 vette and it got 26 to 27. Now I have a 2004 coupe and it gets 11 to 15. This stinks big time. I thought it would at least get in the 26 range. You know, better technology and all that stuff combined with a cd of .29. This car had or has the lowest air drag of any car in the world. I think something is wrong here. Anyway, car has 37,000 miles on it and I was expecting at least the same mileage I got with my older vette.
Thanks
Tony
Thanks
Tony
When I had my '92 vert, I could get 28MPG at 70 on the freeway with the cruise control set. Had to be fairly flat land as hills can cost mileage. My '02 manual trans coupe has a supercharger but otherwise stock and the car will deliver up to 32MPG when driven carefully. On a trip thru Montana, I saw 31MPG in 6th gear at 82MPH, again with the cruise control on and the MPG figure was done with a calculator.
If you get any codes, post them up!