One and ONLY gas mileage thread please

[RedTailHawk]

I always get close to 14 mpg... with a Roush supercharger. I wonder if the aftermarket tunes are killing everyone else's?

I have the 5Star tune running 93 Performance and get about 15.5 mpg driving between Leesburg, VA and my cabin in WV (68 miles each way). It's pretty hilly terrain on the WV side, otherwise I'd be averaging closer to 17 mpg.

 

[Wilson]

the hills definitely kill mpg

 

[RedTailHawk]

With the nice weather we've been having, I've been driving with windows open and no A/C...and fuel efficiency has improved about 1.5 MPG

 

[DPick]

With the nice weather we've been having, I've been driving with windows open and no A/C...and fuel efficiency has improved about 1.5 MPG

How fast were you going? I'd feel like your mpg would take a huge hit if you go over 50 with your windows down.

 

[M64D RAPTOR]

Im about to tow my G8 GT from NY to AL. Any guesses on what ill get for millage

 

[RedTailHawk]

How fast were you going? I'd feel like your mpg would take a huge hit if you go over 50 with your windows down.

Usually 70mph

 

[WyoStorm]

1025 mile trip to Colorado mountains and back. Trip computer said 60.3g of gas used for an average of 17 mpg.

Actual mpg for the entire trip was 16.7! (61.3g actual gas used into 1025 miles)

Got 17.7 mpg on the last tank (328 miles).

What a glorious 1000 mile + trip.

 

[Wilson]

hammer it every once in a while.

 

[WyoStorm]

Oh I did lol!

 

[RAPTORSV]

Been getting around 9 mpg in city driving (like and old lady), 16 mpg on the freeway at 70 mph (everybody is passing me). I need to start driving like I used to, but I know the gas is going to cost me up the ass!