23.8 mpg!
Thread Starter
Advanced
Joined: Dec 2007
Posts: 87
Likes: 1
23.8 mpg!
Hadn't checked my avg gas mileage in some time, so, during a drive thru hilly mountainous area(all 4 lanes)keeping it on cruise as much as possible, and at 60mph, was shocked that i was able to get 23.8 mpg. There was some stop and go, but not too much. Car originally got about 28-29 mpg...however, it's now rather modified. I think on flatter terrain just maybe i can get between 24 & 25...now that's saying something in my book...641rwh/553ftlbtq!!!
Vettes r the bomb
Vettes r the bomb
Tech Contributor
Joined: Apr 2007
Posts: 10,924
Likes: 78
From: Forney Texas
There's just something incredible about making that much power and getting that kind of gas mileage. I check my mileage by calculation and find that the gauge is never correct though. Next time you fill up your tank, calculate your mileage and see how correct it is. I'll be you'll be surprised!
Team Owner
Joined: May 2005
Posts: 23,682
Likes: 9
From: Flagstaff Az.
Took about a 250 mile run down thru the hills to Payson a few weekends ago-2 lane roads with lots of curves and up and downs- filled up when we got back and got a little over 26 running anywhere from 60-80. Would certainly go way down with a heavy foot. 
Race Director
Joined: Sep 2004
Posts: 17,786
Likes: 4
From: Redsox, Pats, Celts & Bruins !!! Redsox Nation !!!
St. Jude Donor '06-'07-'08-'09-'10-'11-'12
I still love the look of disbelief on people's faces when they snicker and say, "hows that on your wallet for gas". Then I tell them I get close to thirty miles to the gallon and they laugh harder.
Tech Contributor
Joined: Sep 2005
Posts: 1,731
Likes: 82
From: New Market AL
My '99 with a small cam, intake, and full exhaust has 70 more rwhp than stock but still gets 26 mpg on my 100 mile round trip to work. I knock down >30 mpg @ 70 mph on straight, flat interstate runs. The terrain and number of stops takes a toll on the mileage though.
Racer
Joined: May 2006
Posts: 410
Likes: 1
From: NJ
I can average 32.5 on flat highways with my MN6 with every single bolt on mod including long tube headers and cruise control off since I can drive the car more economically. Thats pretty good if I do say so myself.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
2027 Corvette Buyer's Guide: Everything You Need to Know!
Joe Kucinski
Safety Car
Joined: May 2003
Posts: 3,814
Likes: 105
From: Dearborn Heights Michigan
Our club did an economy run last fall and my highly modified 2000 C5 ( 475HP) running 10% Ethanol averaged 34 mpg over about a 100 mile loop.
Of course I used every trick I knew to achieve that, such as: coasting down hills with engine off, going 45 mph on the Interstate, etc. People were giving me strange #1 hand signs as they went by LOL.
Of course I used every trick I knew to achieve that, such as: coasting down hills with engine off, going 45 mph on the Interstate, etc. People were giving me strange #1 hand signs as they went by LOL.
Le Mans Master
Joined: Sep 2007
Posts: 7,604
Likes: 8
From: Belleville Il
On my car (and others have agreed)the DIC "average mpg" is between1-1 1/2 mpg happy.It's an old habit (firs car was a 59 vw bug,they had no gas gauge)and I calculate every tank for MPG,and regardless of type of driving still about a mile and a half lower than DIC average. Still i am very pleased with mine,, between 20-22 city/suburban type and 29 on my only mostly highway!
Le Mans Master
Joined: May 2005
Posts: 6,366
Likes: 249
From: Fort Lauderdale, Florida
Amazingly, with long tubes and a Honker plus some minor other things, I can still get 30+ on the highway. People always think I'm lying when I say that. I tell them I drive my car to work because it's my economy car and gets better mileage than my wife's Audi.
Pro
Joined: Apr 2007
Posts: 635
Likes: 0
From: Mc Farland Wisconsin
2 weeks ago my wife and I took a 3100 mile road trip to yellowstone national park, my 2000 mn6 has long tubes, xpipe and bullets, along with the 42 lb injectors still from the previous owners SC setup that isnt on it anymore, and my DIC registered at 30.3 mpg when i got home, and they have some crappy gas out there, usually the highest is 91 sometimes only 90!!!! And that was through 2 sets of mountains!
Burning Brakes
Joined: Oct 2006
Posts: 1,006
Likes: 0
From: Cincinnati OH
I calculated my gas milage today. With a mix of highway and city it came out to be 20.75 mpg. The DIC showed 21.7. Not the greatest but good for a badass sportscar. I have a pretty heavy foot though.
Burning Brakes
Joined: Apr 2003
Posts: 908
Likes: 2
From: TROY MI
The track that I run at is a 180 mile round trip(90 each way).I average 29 mpg on the trip and run 11.4xx @121.xx on the track.Only change I make is to lower the rear tire pressure.That IMHO is" having your cake and eat it".
Melting Slicks
Joined: Dec 2005
Posts: 2,291
Likes: 0
From: sterling ct
and think about it...people are running to car dealers to buy toyota camrys and honda accords because they average 26mpg...they should be buying corvettes.....
my lpe 383 averaged 28.5 on a 150 mile run this past weekend...
my lpe 383 averaged 28.5 on a 150 mile run this past weekend...
Le Mans Master
Joined: Nov 2005
Posts: 5,451
Likes: 2
From: East Peoria Illinois
Racer
Joined: May 2008
Posts: 316
Likes: 0
From: San Deigo California
Anybody ever notice that at speed you open the popup headlights and on cruise in the Arizona desert it knocks 2 to 3 mpg off the instantaneous mileage. I changed to flush headlights. Looks cool and saves gas.
