mine's 2013 GT with manual, i have to admit the mpg in the city is around 13 to 14. i already did first oil change and the miles right now reach to 5400miles.
and the highway is around 21.

so, City/Highway 13/21..

what a data.

 

My first tank was 19.6, 2nd was 20.3.

Just a hair over 1000 miles.

 

ive been complaining of this since i got the car. i dont get any better than 14/19. i even went through an entire tank of gas without ever flooring it just to see if my mpg's would change, and no luck. im at 2600.

 

2013 GT / Manual with 3.73 gears:

100% city driving

AVG 15.5 MPG

Exactly what I expected it to be

 

12 gt manual with 3.73 and I have recently been getting 19 to the gallon mixed driving including heavy LA traffic in the morning. Just keep the rpm low when you shift. I actually read a thread somewhere here about how to improve my mileage. I was getting 15 before.

 

55-60mph is definitely a sweet spot for these cars ... I set the cruise at 59, reset the on-board "Avg Econ" computer and watched the numbers settle right at 26.2 mpg. And this was after about 100 miles of constant highway cruising.

I got a total of 297 miles out of that tank, averaging 21.3 mpg after I whipped out the calculator.

It was a lot lower than it could've been but on the way to where I was going that day I misbehaved a lot and while there, I misbehaved some more

On average, I get about 15-16mpg city/hwy combined.

When I do all hwy, and not staying under 65, I get right around 20-21 mpg

 

V6 pp and this tank is at 14-15mpg I just installed a new part and am having fun, usually I'm at 18-19 with a big foot in hwy driving. If I let it go easy it be about 26-27. But you gotta live the way it feels when you step on it.

 

^ I seem to get a pretty steady 14mpg with my '13 V6/M6/3.31 with not-very-restrained driving and 87 octane. Better when just highway cruising. And it's been 45F or colder almost always since I got the car. Much less mpg than I get with my Ford 4-banger which I always drive exuberantly (24mpg), in comparison with the GTO which got 4mpg lol.

 

Getting very decent numbers on mine about 15.3 in city and as high as 24.6 on freeway running 3.31 gears and 6 speed. Got 19.3 avg this weekend with some very spirited driving in the mountains passing POKEMON people and carving corners.

 

Pulling in right at 19.8mpg.

I use an app on my iPhone called Road Trip. Tracks mileage, price, gallons, etc.

I don't use the one on the dash, as it looks to be off.

 

I get around 18, with mixed driving and frequent spirited driving. 7200 miles and loving every smile to the mile... I didn't buy this car for gas mileage...

 

Average of 19.8 mpg with 30% city, rest highway with 13 gt auto. If I keep rpm around 2k on highway, I can see sustained mpg of 25+ with cruising speed around 60.

 

I get 230 miles+ per tank and I dont fill it up all the way, I just stop at 40-45 bucks so whatever that gets me.
I average 17ish in the city and well I USED to average 24 mpgs going 80-90 mph on 87 octane and no tune( it's the flow of traffic on the interstate, not speeding ) and now I get 22mpgs with a 91 octane hybrid tune and 23 with an 89 performance tune. I'm thinking of using the 87 street tune and see how my MPGs pan out.

 

Last tank was 26.7, Average over the last 6395 miles is 25.7 http://www.fuelly.com/driver/siberexpress/mustang
2103 V6 Performance Package with a manual

 

well, thanks guys.

I always use 93 gas and always around 220mile per tank. I always shift at low ram.... i dont know whether it is because my driving habits..

 

I have been averaging about 18.6 and now I'm down to about 16.5 because I have been making tons of short trips and enjoying her before she get on a boat for 3 months headed to Germany. I didn't buy her for the mileage either. I use Fuelly to track my numbers and how much I've spent. My name is the same on there.

 

that surprises me - I use 92 and everytime I fill up it reads around 250 miles to empty... and I don't shift at low RPM's I love the sound at 3k.... BRRRRRRRRRRRRRMMMMM

 

I didn't even pay attention to mileage until I had clocked over 1000 miles, which occurred around the Arkansas/Texas border. Driving interstates on the Texas and Louisiana flatlands, I got over 30 mpg; had three tankfuls from full to warning light that were well in excess of 400 miles on the trip odometer. The hilly terrain of Mississippi, Alabama, Tennessee, and Kentucky cut my mileage back to the upper 20's, but a lot of those miles were on secondary highways, with small town speed limits and more gear changes. I don't send the tach needle up too far, and sometimes shift from 3rd to 5th, or 4th to 6th, depending on conditions, but the V6 with 3.31 gears is working out very well for me, and if I want it to run, it's quite happy to oblige.

 

Avg. about 21 mpg 75/25 highway/city. The car's specs are in my sig. I had a '11 auto that knocked down 26 mpg @ 80 mph avg. on a trip from Seattle to Tahoe. Pretty **** good for 412 hp and drop dead gorgeous looks if you ask me

 

who buys this car and worries about mpg? Sounds like some need a driver mod