I dont think this was an example of someone going downhill and bragging - this was a legitimate trip showing the potential performance of this amazing car under normal (easy) driving...no need to get all pissy about it mschuyler...geeezzz 
36.4 mpg
Racer
Joined: Oct 2012
Posts: 480
Likes: 50
From: USA
you can also get a generic, ball park number by looking in the info page on the dic and look at the total number of gallons of fuel for the life of the car. Take the odometer reading and divide by that total number of gallons number shown on the dic. Not sure how close it is to the actual number, but i would guess it's in the range.
Thread Starter
Instructor
Joined: Aug 2018
Posts: 213
Likes: 33
From: Just SW of Richmond VA
You can also get a generic, ball park number by looking in the info page on the DIC and look at the total number of gallons of fuel for the life of the car. Take the odometer reading and divide by that total number of gallons number shown on the DIC. Not sure how close it is to the actual number, but I would guess it's in the range.
Race Director
Joined: May 2001
Posts: 15,324
Likes: 2,080
From: Guelph, Ontario
Every time there is a MPG topic this guy has to try to rain on everyone's parade. No matter how you measure the MPG on these cars, it's darn impressive! Since my last oil change (which was 5000 miles ago) I have averaged 25.5 MPG, and that includes a mix of stop and go driving and highway driving. With my C6 I was closer to 22 MPG doing pretty much the exact same type of driving, so moving to a C7 was a win win for me, gaining 55hp and using less fuel. I obviously didn't buy this car for it's fuel economy, but I love bragging about the fact that it's better on fuel than a lot of cars with half of it's horsepower.
Last edited by Patman; Sep 26, 2018 at 10:10 AM.
Race Director
Joined: May 2001
Posts: 15,324
Likes: 2,080
From: Guelph, Ontario
You can also get a generic, ball park number by looking in the info page on the DIC and look at the total number of gallons of fuel for the life of the car. Take the odometer reading and divide by that total number of gallons number shown on the DIC. Not sure how close it is to the actual number, but I would guess it's in the range.
Burning Brakes
Joined: Oct 2017
Posts: 1,230
Likes: 467
From: Colorado
I just did a 50 mile round trip with my cruise set at 60. All dry, back country roads with no stoplights or traffic. There were only a few small hills, the temp was 76, no passenger, no Range installed ( I just ordered it and it hadn’t arrived yet). So essentially perfect conditions for near max MPG, But I wasn’t expecting over 36 in my new to me base ‘14 convertible. Oh, and the top was down of course.
I got similar when I bought new and was screwing around curious (even without a Tracy Lewis catchcan), but now? I barely blip 20MPG. I drove it like Ms. Daisy new, now I feel I need it in that lower gear with the exhaust doing it's thing. These cars are just fun.
Safety Car
Joined: Nov 2012
Posts: 3,992
Likes: 2,609
From: Gettysburg PA
2020 C8 of the Year Finalist - Unmodified
I do reset my trip milage gauges each fill up. What would be the purpose of resetting the lifetime fuel used gauge?
Burning Brakes
Joined: Feb 2008
Posts: 1,192
Likes: 130
From: Senoia Ga
Not trying to be nasty about it. Just trying to put this in a realistic perspective. We see this all the time. Someone comes down a mountain pass and claims this great MPG and is "amazed," which is nonsense. If you keep the display on instant MPG, you often see in excess of 100 MPG with your foot off the gas going downhill for a few blocks. IMO the culprit here is GM even putting such a misleading measurement into its calculations for people to see and comment on. Who are THEY trying to kid? It's a totally BS measurement. The Corvette gets great gas mileage, there is no doubt, but speaking in hyperbole is misleading and doesn't help anyone because it is not a real-world value. If you joined this forum expecting to never be challenged in making a claim, you came to the wrong place. My MPG over nearly 20,000 miles is 27.5, but the caveat even for me is that it is mostly freeway miles on road trips. In other words, even that overall figure is not accurate if you normally drive "in the city" where you will likely get way less than 20.
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Last edited by joemessman; Sep 26, 2018 at 11:37 AM.
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From: Jacksonville Florida BWO Dayton, Cincinnati, Bloomsbury NJ, Cincinnati
2015 C7 of the Year Finalist
I need more trips! 28,491 miles and 1316.3 gallons gives me 21.64 MPG. Most of the driving is city driving so I kill the mileage at red traffic signals and traffic jams. It usually puts me in the 30+ range on trips and I'm ecstatic! Best 50 was 34-35 if I recall correctly. It'd be better if I had the manual but old folks have to give up things as they age and physical limitations of our bodies creep into the scheme of things.
Elmer
Elmer
Race Director
Joined: May 2001
Posts: 15,324
Likes: 2,080
From: Guelph, Ontario
It's not labelled as a lifetime fuel used gauge though, it's just simply "fuel used", and I figure some people probably reset it every time they fill up, that way it gives them a more precise measurement of how much fuel they have left. If it was truly a lifetime fuel used measurement they wouldn't have provided a reset button for it.
Last edited by Patman; Sep 26, 2018 at 12:19 PM.