On the interstate, I get around 30MPG.
Same here some times a little more sometimes a little less. I have an MN6 and at 65 MPH I am tunring less than 1500 RPM
gas mileage question?
Thread Starter
Drifting
Joined: May 2001
Posts: 1,392
Likes: 0
From: Wabash,IN
CI 7-8-9-10 Veteran
St. Jude Donor '08
gas mileage question?
What kinda gas milage are you guys getting with your vettes on the highway ?? Me and a guy at a factory i work at told me vettes only get 25 mpg if there lucky 
I told him i was getting around 29-30 avg on the highway , said i was nuts ?? help me out and let me know what yours is gettting .. thnaks jay
also i installed a p1sc and im now getting around 27-28 avg higway..
I told him i was getting around 29-30 avg on the highway , said i was nuts ?? help me out and let me know what yours is gettting .. thnaks jay also i installed a p1sc and im now getting around 27-28 avg higway..
Burning Brakes
Joined: Jul 2004
Posts: 1,192
Likes: 111
From: If your not the lead dog the view never changes Boise, Id
from Phoenix to Boise and back (had to make the trip a few times) cruise control set at 78 averaged 29 mpg, acording to the dic as well as just doing the math.
Melting Slicks
Joined: Feb 2006
Posts: 3,400
Likes: 3
From: Sarasota Florida
Race Director
Joined: Aug 2003
Posts: 13,421
Likes: 8
From: Lake Mary Florida
'01 6 speed with Z51.
Window sticker says: 19 city and 28 hwy.
Reality, about 18.6 city (I do my share of quick accelerations) and about 28-31 in 6th at cruise. Depends, head winds or varying cruise speed will lessen the mileage, as well as the speed set for cruise. About 78-84 mph and you'll be doing really well on gas mileage.
Window sticker says: 19 city and 28 hwy.
Reality, about 18.6 city (I do my share of quick accelerations) and about 28-31 in 6th at cruise. Depends, head winds or varying cruise speed will lessen the mileage, as well as the speed set for cruise. About 78-84 mph and you'll be doing really well on gas mileage.
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[/IMG]If I calculate it I get what this says under the best of conditions for a tank full. Do you think GM would low ball the gas mileage.
Instructor
Joined: May 2002
Posts: 220
Likes: 1
gas mileage question?
In both the 98 and 99 I averaged 23-24 if I keep my foot out of it around town. If I am out on the interstate traveling somewhere and keeping it 75-80 I get 27 (that was with both cars). I can't complain for the horsepower and the ride. I felt lucky in the Jeep Grand Cherokee I owned with a striaght six to get 18 on the highway.
Bill
Bill
Safety Car
Joined: Dec 2006
Posts: 4,188
Likes: 1
From: Chino California
St. Jude Donor '08-'09
Safety Car
Joined: Jun 2006
Posts: 4,088
Likes: 1
From: Pennsylvania
I get 25 max on the highway with the 3.42s in the A4. I got an easy 28+ with the 2.73s. When I had the gears done, they also did headers, torque converter and a tune. I think tires also make a difference, I run Kumho ASX for reference.
Burning Brakes
Joined: Apr 2005
Posts: 1,159
Likes: 3
From: Florida
I took a road trip last year in my 2004 Z (800 miles) and averaged right at 31 mpg. I usually average around 24-25 mpg when mixing city and highway driving. If all I do is city driving the Z gets 19-20 mpg.
I don't know if it makes much of a difference, but, my car has CAI, port & polished TB, smooth couplers, LTs, high flow cats, corsa mufflers and a tune.
I don't know if it makes much of a difference, but, my car has CAI, port & polished TB, smooth couplers, LTs, high flow cats, corsa mufflers and a tune.
Last edited by crazyv6; Dec 27, 2007 at 03:08 PM.
Racer
Joined: Jan 2005
Posts: 311
Likes: 1
From: Arkansas
29-31 mpg hwy @ 70 mph
pulled 35 mpg once driving out of NM into west TX (slow decent from mountains to low plains).