By no means do i beat on the car for mileage this bad. The best i can pony up is 190 miles a tank! My car is a brembo, trac pac car. Average driving at 70 mph on the highway 40 miles round trip a day. But seriously the best i can get out of this thing stock is 190 miles. Any ideas why? i did 2 Kam resets and it starts back at 325 but drops like a rock back to 190. Car is feels faster then my old modded 2011 in stock form but again 190 is nothing to laugh about for a stock car while others are pulling 100 extra miles then me.

any ideas before going to the dealer would be great

 

My friends 12 automatic averages 13 mpg but she beats on it with her high heeled pretty foot.

Is yours manual or auto? May be a problem air fuel ratio. I'm sure someone here has the answer.

 

Im getting 13+ mpg on a '13 mt w/ 3.73s, but thats with a fair amount of city, heavy-footed driving.

 

Manual, 3.73 gear but ive been watching the a/f and its pretty accurate (14.1-5) at idle and drops into the low 12s and high 11's @ WOT

 

your tellingme that 13.5 on the highway in stock trim is normal for these cars... im sorry but no flippin way

 

3.73 MT here and I've been averaging 19-19.5 mpg with about an even mix of freeway (@ 75-80) and city. Also I've got over 6,000 miles on it, so I'm completely broken in. But even brand new I never got that bad of gas mileage.

 

V6 pp over here and I'm getting about 18 or so with 3100 miles. Better than before though was getting about 13-16 when I was below 2000 miles. Hopefully keeps improving though. I did add a cai so maybe that was the boost? Still gonna wait a bit longer to see if it improves before dealer involvement.

 

ive got about 5400 miles... i think its dealer time

 

go 65 mph put 3:31 gears in, and get a CAI and you'll see a huge boost in MPG

You have a track pack 5.0 and you want good MPG, you bought the wrong car buddy!

 

Um, no, I said Im getting 13 in mostly city w/ some fun factor. Was just a comparison for you.

 

this is a joke right? i had a 2011 that i traded in that had boss manifold, tune, 3.90 gear, mid pipe, axle back and still got 26 on the highway.

Also intakes are worthless and bling mods... there is absolutely no boost in gas mileage with one or power for that matter

 

That's hard to believe.

 

Intakes are worthless? Now Im questioning your other statements.

 

unless supercharged on the 5.0 are worthless there is tons of data proving this, your just not looking at it correctly

 

i have a track pack 5.0 and I'm averaging 19-19.5 in combined city/hwy driving. I drove to Bolivia, NC and back a week or so ago and averaged 23.6 on the highway

 

Ha ha, yeah ok, dude, me and the rest if the world.

 

What about dyno vids that show increased power? Or is it all just an allusion? Exhaust doesnt add piwer either right? Thats gotta be it

 

I thought we were discussing gas mileage?

The OP has the brembo package with larger wheels. I wonder if this has anything to do with it?

I heard that the sweet spot of a mustang for gas mileage is constant speed of 55-60. Speeds above that lower economy. I wonder if cruise control might help him?

My guess is driving style, road conditions, wind force and quality of gas. Sounds like everything else is mechanically sound.

Gas is 4 bucks a gallon here!. Sorry bro. Really hope it evens out for you.

 

I have 5500 miles on my gt, I don't have track package, I do have the 19" wheels and a 3.55. I'm getting about 16-19 based on how much "spirit" I put into my daily driving. I drive about 2 miles in the city streets and 8 miles on the freeway each way to work, plus I drive around town. I'm very pleased with the MPG, I drove down from oregon to the bay area a few times, and even averaging 80 mph I can pull down a good 23-24 mpg on that drive.

 

yup, mileage is not so good. got about 1000 miles on it so far and been getting about 14-15. guess from what i'm reading here it should improve over time.