2018 5.0 Highway MPG

[1 old racer]

With my 18 GT PP1 auto. I am getting about 22 on her with my daily 26 mile each way on SoCal freeway traffic. i drive the freeway with the "rain" setting and weekend and fun drives with the "sport". In sport mode she is getting an avg of 19 to 20 mpg. A side not with the car on "Rain" setting the shifting is very smooth making the stop and go SoCal driving a very easy drive home.

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[armykyle1 [HACKED ACCOUNT]

Straight highway driving, I get 26ish. My normal driving 17ish

 

[Dusten]

With my 18 GT PP1 auto. I am getting about 22 on her with my daily 26 mile each way on SoCal freeway traffic. i drive the freeway with the "rain" setting and weekend and fun drives with the "sport". In sport mode she is getting an avg of 19 to 20 mpg. A side not with the car on "Rain" setting the shifting is very smooth making the stop and go SoCal driving a very easy drive home.

throttle response is way down on that setting i've noticed.

On the note of fuel mileage I have tracked my mileage for 3458 miles(this doesn't include the 396 on the car when i bought it, or the miles on the current tank)

I've put fuel in 15 times
My worst tank is 15.84MPG Almost entirely city
My best tank is 25.32 almost entirely hwy
5 tanks are more or less hwy tanks and the car avg's 22mpg
This is with 3.55's an auto and an asshole behind the wheel.

My MPG for the life of the car is 18.7

Also, the dash is on avg 1.7mpgs off. It reads high every tank

 

[18basedGT]

I have a long highway drive to work and I occasionally took the 2018 base model GT there. I reset my fuel economy readings and 24 average was pretty easy to get consistently but it was hard to get to 25 average. Any low speed acceleration or being stopped at a light would eat up gas pretty quick.

 

[Turbolag87]

i avg 20 on my 18 mt82
26mpg on hwy with ease

 

[Jetnoise]

38 is pretty stout

 

[specop]

I am averaging 21.6 which is a mix of city and interstate driving and im not driving it conservatively.... lol

 

[Intrepid175]

38 mpg coming home from Thanksgiving.

Wind at my back, mostly downhill, and using adaptive cruise around 65 mph. Also did some mild hypermiling techniques like decelerating up hills.

Looks impressive but, no disrespect intended, something doesn't add up. 38.1 average mpg, only 183.6 miles into the tank, and only showing 71 miles to empty? I'd think MTE would be closer to 200 or so under these circumstances?

Just wondering?
Steve R.

 

[krishelnino]

I average 15-18 during normal driving and occasional hard pulls. During my last 2000 mile trip, the highest i got was about 22. The thing i've noticed is that on freeways if I stick to under 70 mph, the instant fuel economy shows >25mpg.

 

[Deleted member 35786]

I average 15-18 during normal driving and occasional hard pulls. During my last 2000 mile trip, the highest i got was about 22. The thing i've noticed is that on freeways if I stick to under 70 mph, the instant fuel economy shows >25mpg.

Ditto. At 80mph I average 22-23, if I drop down to 70mph I’ll get 24-25. Then again this time of year it’s the crappy winter blend gas. Mpg will go up in the spring when they switch to summer blend. All while running 89 octane.

 

[Mazman]

29mpg over a 102 mile trip (including one cold start) average speed 43.5 mph

With winter tyres(none studded though)

 

[rocky5517]

Just figured my mileage this afternoon, with 1000 miles in the book. Mostly local driving with a little highway, got 18.8 mpg. I'm fine with it. Automatic, no AC used. Was nursing it, kind of, due to breakin. Kind of. But due to the cool sound of the exhaust in the lower gears, I was thinking the mileage would be worse.

 

[ihc95]

I get around 25 mpg on the highway. Just amazing for a near 500hp car!

 

[Dusten]

I get around 25 mpg on the highway. Just amazing for a near 500hp car!

You've clearly never look at vette mpg

 

[302@12psi]

2019 with 3.73's and I'm between 19-22. The display is nearly 1.5 MPG off each fill up.

The majority of my work commute is highway speeds.

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