GTlust

How many of you are just repeating what your dash tells you? I calculate my mileage per tank and it's right around 17-18. That's me driving in 3rd when I should really be in 4th.

SlappyGT

I'm going by both. I said what my onboard computer is telling me, and what I've calculated myself, thankyouverymuch!

blackout

I'm at 18-20mpg city depending on lights/how I drive etc etc... 24-26 if I reset it on the highway going around 65.

2006RedGT

Note he also has 3.73's which affect mileage.

2k05gt

I got around 18 - 22 before gears, as soon as I upgraded to 4.10:1 it dropped to about 16 - 20

Tres Wright

I went from an 05 V6 auto to 07 GT manual with 3.55's. On the exact same commute, I got an average of 24.0 mpg on the V6 and am getting 22.7 mpg on the GT. Both of the MPG calc's were derived from a monthly expense spreadsheet, not the on-dash computer reading; although I will say the on-board computer reading has been extremely accurate on both cars.

Cowtown

I just ran a 2800KM road trip and logged each leg just for the sake of doing it. It was mixed highway and city driving with some fun driving in there as well (getting on it down at sea level). This included crossing a couple mountain ranges (the rockies twice) and overal average MPG on the entire trip was 20.4MPG. The best observed leg was the final leg home going 15 over the speed limit (so like 75-80 most of the way) I got 25MPG and that has a lot of hill climbs back through the mountains to Calgary.

Parts of the legs that hurt the overal average MPG was a 2 hour idle/crawl at the Peace Arch border crossing (completely lame) and my driving in and around Victoria where I was mashing the gas so much because of the sea level performance (I live 3500ft above sea level with an even higher density altitude so I noticed a big difference).

Hope that helps. Basically in city with some spirited driving, a 10mile communte each way and some side driving to the mall/groceries etc. I use a tank of gas a week.

Stangie

90% interstate driving 27-28 @ 70-75 MPH. But you don't buy a GT for gas mileage. There's only about a 2 MPG "advertised" difference between a 4.0 and 4.6.

ipchay61

According to the computer, I'm getting 19.7 mpg in what is mostly city driving. On a trip I took last week, running 80 mph most of the way on the interstate, I got a calculated 24.2 mpg. Car has just under 1200 miles so it's really just getting broken in.
-Chip in SC

SonicStanGirl

Same for me....lots of city driving, sitting in traffic = in the mid-14's