25.2 mpg unbelievable!

[FreedomPenguin]

Agreed. I can get ~24mpg on the highway, and that's with letting the RPMs not get too high. All of these people getting 29+ ... there must be a lot of downhill driving in that.

I get nothing but 30+ like 34mpg average

But I’m 2.3 3.31 gearing manual and I only use highway, I do like 5% city 95% 65-70mph cruise

I cruise at 70mph doing 2k even rpm just about in 6th

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[Deleted member 35786]

Unless you adjust your AFE the mileage indicator will read 1-3mpg higher from Ford.
https://www.mustang6g.com/forums/threads/how-to-adjust-your-indicated-average-fuel-economy.48903/

 

[ahl395]

itS a V8 yOu sHoUld hAvE bOuGhT a pRiUs iF yOu cArEd aBoUt MpG.

Sorry, i couldn't resist lol.

Best I've seen is about 20mpg when I was stock. Now I get about 16-17. The funny thing was after I removed my cats my MPG went up.

 

[FreedomPenguin]

I’d cry if my mileage was that awful, I’d just stare at it in driveway. Lol

 

[mejohn50]

I’ll play. Average since October 2018 when I got the car is 16.8 calculated MPG. Stock 2019 GT A10 with 3.15 gears. Probably 70% highway miles. The autobahn is thirsty.

 

[Todd00000]

I have a 129 mile commute, and if I drive like grandma, I can just get it to tickle 29.

What octane and/or brand gas do you use?

 

[sZedely]

I just adjusted my AFE on my 19 GT. I'm hitting around 18.5MPG on my commute. I've been using Speedway and Costco 93 octane.
About 20 out of the 25 miles I drive to work is highway. Most days I'll cruise around 80mph with traffic. Even doing 85-90mph, the mileage doesn't change much. I'm surprised since the car has a 3.73 rear end.

 

[Cobrajet21]

Just took on first long trip to beach. Very happy with mpg . Never looked at it till we got home.

 

[TomcatDriver]

I've been getting just under 20 in town driving as long as I behave myself, which seems pretty good for a car rated at 14 city.

 

[PUNISHER7772]

2018 Mustang GT PP so it has 3.73's and a 6 speed. I run Shell V-Power and consistantly get 25 mpgs, I don't baby it but I'm not to the floor all the time either. Our local dyno guy suggest V-Power as it consistantly seems to out perform (or more consistant) other fuel around here (93 octane).

 

[Cobrajet21]

My 13 focus gets 37 combined ever sine i got it 6 years ago. Took the mustang for the fun not the mpg. Just checked it to see what it would do.

 

[PUNISHER7772]

My 13 focus gets 37 combined ever sine i got it 6 years ago. Took the mustang for the fun not the mpg. Just checked it to see what it would do.

Agreed, I have a 2007 ZX3 as my winter beater/daily. It was getting around 33-35mpg but as the miles have added up (around 160K) it's been dropping some. No check engine lights and I have replaced O2's and some other sensors, I think it's just getting tired even though it runs like a champ still.

 

[15BluStang]

With my 2015 EcoBoost, I averaged 22.5 mpg over the almost 4 years I owned it. The best I got is 33.4 mpg. In the two months I have owned my GT, I have averaged 19.8 but my best has been 22.76. I will admit I am a bit heavy on the pedal when accelerating. It helps me get away from the retirees in their Crown Vic’s.

 

[Luke5.0]

I've been getting 11 mpgs in the city and 14 combined so far not really driving hard.

 

[hlfbkd420]

I only drive in the city. 12 miles a day with stoplights the whole time. Averaged 15.5 before the Roush SC and 11.9 after. I haven't taken it on a trip more than 25 miles one way. 5k miles in 8 months.

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