gas mileage?
Drifting
Joined: Jul 2005
Posts: 1,274
Likes: 0
From: Los Angeles California
St. Jude Donor '06-'08
Fillup take the mileage and when you fill up again take the mileage, subtract to get the miles driven and divide by the number of gallons used to find your average milage.
Advanced
Joined: Apr 2005
Posts: 83
Likes: 0
From: Fort Walton Beach Florida
I just made a trip to Oklahoma and back (roughly 800 miles each way) and i averaged 31.3 with my cruise set between 75 and 80. The DIC said around 33, but it always reads high. In town i usually get about 22mpg. 6-speed by the way.
Le Mans Master
Joined: Oct 2002
Posts: 6,772
Likes: 1
From: Tampa FL
Originally Posted by STUNNINC5
Just read mine said 16.0 I know I drive it hard 50% of the time that and I ride on 20" wheels with low pros at 40 psi. I thought I was getting bad mpg but seems like it is average .
.. mine stays between 28-32 .. but then again im running 18s .. so i dunno .. 40 just seems like a lot
Intermediate
Joined: Feb 2006
Posts: 48
Likes: 0
From: Lake Villa IL
I just got home from a 325 mile round trip through northwesten Illinois farm country, mostly 2 lane roads, small towns, lights etc. Had the top off all day if that makes a difference. DIC says 26.2, filled the tank before I left and again when I got home at the same station. My calculation comes out to 24.7.
Honestly, I dont care which one is correct! It was a beautiful day, nice drive in an incredible car! 2004 Torch Red Auto Coupe
Administrator
Joined: Mar 2001
Posts: 368,447
Likes: 24,807
From: In a parallel universe. Currently own 2014 Stingray Coupe.
C7 of the Year - Modified Finalist 2021
MO Events Coordinator
St. Jude Co-Organizer
St. Jude Donor '03 thru '26
NCM Sinkhole Donor
CI 5, 8 & 11 Veteran
The two overdrive gears in the six speed tranny makes a world of difference. When you are going 70 mph and only turning about 1600 rpms, good gas mileage follows. 
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Melting Slicks
Joined: Aug 2004
Posts: 3,151
Likes: 294
From: Opelousas, Lousiana
CI 6-7 & 9 Veteran
I checked mine traveling to Bowling Green from Louisiana and back 2 years in a row. I did it the old fashion way, recording mileage and gallons pumped, rather than using the car computer. Last year I constantly got 27.5 MPG. This year it was between 27.1 and 27.3 MPG on different tanks. (I maybe drove a little faster this year...) Around town I get between 19 and 22 MPG depending on how much rush hour driving and how much highway driving we do. Even with premium fuel, the C5 is very economical to drive.:thumbs
Pro
Joined: Jan 2006
Posts: 667
Likes: 0
From: Galveston Indiana
[QUOTE=IronMedic]hey guys, i did a search and noticed how great the gas mileage is on vettes. how is that so with a 5.7 and a 6.0L block? what does chevy do to make the gas mileage so good on the highway?
It's magic.............shhhhhhhhhhhhhhhh..... .....
It's magic.............shhhhhhhhhhhhhhhh..... .....
Melting Slicks
Joined: Aug 2004
Posts: 3,151
Likes: 294
From: Opelousas, Lousiana
CI 6-7 & 9 Veteran
[QUOTE=sooz]
The C5 had the one of the lowest wind drag ratio (not sure about the terminology but my source is the NCM film) of any production car when it was built. This undoubtedly contributes to the better mileage. I was very surprised about how good the fuel economy was when I bought my corvette.
Originally Posted by IronMedic
hey guys, i did a search and noticed how great the gas mileage is on vettes. how is that so with a 5.7 and a 6.0L block? what does chevy do to make the gas mileage so good on the highway?
It's magic.............shhhhhhhhhhhhhhhh..... .....
It's magic.............shhhhhhhhhhhhhhhh..... .....
Race Director
Joined: Apr 1999
Posts: 15,149
Likes: 477
From: NM
Don't forget the torque factor. Due to the torque that the V8 makes it can run all day around 2000 rpm and 75-80 mph and not have to down shift. An engine with low torque (and high HP) will have to be downshifting all the time to keep the speed up and thus dropping the MPG. 
tom...
tom...