Gas???
Race Director
Joined: Oct 2005
Posts: 10,092
Likes: 1
From: I speak the truth. Harsh but accurate. The Woodlands Texas
St. Jude Donor '09-'10
My Z06 gets over 23 city and around 29 on the highway. I beat on it fairly hard and still get good mileage. I cant drive it as hard in the rain as I do in the dry so that should give you some idea of how I drive. But I am safe and dont endanger others.
ymmv.
ymmv.
Advanced
Joined: May 2008
Posts: 67
Likes: 0
From: Ottawa ON
All I can say after a trip from Ottawa to Toronto is "holy s**t!!!"
I got 720 kms (450 miles) out of my tank driving between 120kms to 140 kms/hr (75 to 87 mph) with the top up and the a/c running. On the way back I did 620 kms on the tank and still had a range of just over 200 kms to go. Unbelievable that a car that performs as well as the C6 can be this good on gas. Mind you city driving in an A6 is a whole other story but a guy has to burn a little fuel to have some fun!
I got 720 kms (450 miles) out of my tank driving between 120kms to 140 kms/hr (75 to 87 mph) with the top up and the a/c running. On the way back I did 620 kms on the tank and still had a range of just over 200 kms to go. Unbelievable that a car that performs as well as the C6 can be this good on gas. Mind you city driving in an A6 is a whole other story but a guy has to burn a little fuel to have some fun!
Last edited by mrkay; Jun 29, 2009 at 12:42 PM.
Safety Car
Joined: Feb 2006
Posts: 4,732
Likes: 34
From: Monument CO
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Brett Foote
Team Owner
Joined: Feb 2008
Posts: 30,688
Likes: 11
From: Ocala FL
Don't get too worked up about the range. It is calculated based on your most recent driving, and not on the average you see on the DIC. If you ride it hard before filling up, it might show the range as 200 miles after fill up. If you pull off the highway to fill up after a long run, it will most likely show you a range over 500 miles after the fill up.
Thread Starter
Instructor
Joined: Jun 2009
Posts: 238
Likes: 0
So I filled it up on Thursday and I have put around 100 miles since then. It's still has about 70% left on it. I think it's running better actually. The computer must hve adjusted to the way I drive :0)
Pro
Joined: Jun 1999
Posts: 650
Likes: 8
From: Gansevoort NY
The 18 gallon capacity rating is BS. You'll find it's very hard to put more than 17 gallons in a C6. A LOW FUEL message will appear in the DIC when it wants you to think you'll run out of gas in ~42 miles. That's a fib, but there's no way to really be sure how much farther you can go because once that ding-dong goes off you can no longer bring up your fuel remaining fuel RANGE. I usually chicken out when a fill-up is about 16.5 gallons. I've never actually flamed out, but there was one time when I'd have sworn I was running on fumes and pumped 17.0 gallons.
And one thing I've learned the hard way is that when the gas pump kicks off while filling the tank, the tank is FULL! Do NOT try and squeeze in a little more to top off the tank or found up the dollar amount, or you'll be cleaning up the fuel that spills out off of your car.
The C6 has to have one of the most free-flowing filler pipes I think I've ever seen on a car (definitely better than the tank on my Prius - I sometimes have the feather that pump the whole time to keep it from kicking off while filling it - fortunately, the Prius only has an 11 gallon tank).
-Ray
Drifting
Joined: Jun 2008
Posts: 1,746
Likes: 35
From: Jupiter Fl
Thats the fact jack !!!!! If you have to put more than 17 gallons in, your really runing it low and pushing your luck !!!
Racer
Joined: Aug 2003
Posts: 446
Likes: 13
From: Nine Mile Falls WA
Questionable results
You say you put 15.8 gallons in after 200 miles? That computes to 12.65+ mpg, which is not acceptable for a tuned LS2 being driven less than aggressively. It sounds like maybe you're not resetting the 'average' but are carrying it forward from tank to tank - maybe even from when you bought the car? Read the manual on how the mileage readouts in the DIC work. If you reset the mileage numbers when next you refill you'll get an accurate reading for YOUR driving style and history, eliminating that left over from the previous owner.
I regularly see 20 - 22 mpg driving back and forth to work in mixed driving environments ('06 Z51 'vert), and the highway mileage easily exceeds 27 mpg without overly gentle driving.
I note you figure gas mileage the same way my kids do - it could be a generational difference. My generation divides total miles driven by the number of gallons used, while it seems the younger folks compare the number of miles driven on a tank of gas. In my experience (I'm OLD) some cars had VERY LARGE tanks (24 gallons or more) and some very small (I fondly remember an old MGB that held about a thimble-full) so you really can't compare mileage by "tanks of gas". The big monsters that got horrible mileage had huge tanks, while the 'sippers' had small tanks. Maybe they were designed to allow you to go a comfortable distance on a tank of gas - lots in a behemoth and less in the economy models (one tired old memory cell keeps telling me a Corvette Stingray option ['63 - '67] was a 36-gal fuel tank).
Enjoy the ride, don't worry too much about mileage unless it indicates a performance problem, and smile, smile, smile as you drive it.
I regularly see 20 - 22 mpg driving back and forth to work in mixed driving environments ('06 Z51 'vert), and the highway mileage easily exceeds 27 mpg without overly gentle driving.
I note you figure gas mileage the same way my kids do - it could be a generational difference. My generation divides total miles driven by the number of gallons used, while it seems the younger folks compare the number of miles driven on a tank of gas. In my experience (I'm OLD) some cars had VERY LARGE tanks (24 gallons or more) and some very small (I fondly remember an old MGB that held about a thimble-full) so you really can't compare mileage by "tanks of gas". The big monsters that got horrible mileage had huge tanks, while the 'sippers' had small tanks. Maybe they were designed to allow you to go a comfortable distance on a tank of gas - lots in a behemoth and less in the economy models (one tired old memory cell keeps telling me a Corvette Stingray option ['63 - '67] was a 36-gal fuel tank).
Enjoy the ride, don't worry too much about mileage unless it indicates a performance problem, and smile, smile, smile as you drive it.
Race Director
Joined: Dec 2007
Posts: 19,574
Likes: 167
From: Frederick, MD
It'll eventually adjust and GM engines seem to get better gas mileage once they are broke in. Keep an eye on it because these cars are usually pretty effiient. A tank of gas for 200 miles is a joke unless you are beating the crap or racing it. That is barely over 11mpg.