2018 5.0 Highway MPG

[melwff]

automatic

We know all that “and your mileage may vary”

So what are EPA estimates for auto tranny equivalents? Might as well show those.

2017 5.0 auto city 15 highway 24 combined 18
2018 5.0 auto city 16 nighway 25 combined 19

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[Nabush]

Don't trust the dashboard. The best way to calculate on the street is to fill, reset mileage, drive till most of the tank is gone, then fill again (with the same pump if possible). Take the mileage on your trip screen and divide that by the gallons of your fill after. My computer showed 20mpg after a weekend of spirited driving, mixed in with a few cruising trips. The actual calculated MPG was like 18.8mpg. I used to do petrochemical testing, which included fleet tracking. Without having a tank on a scale, this is the best we can do.

What did I say ? I said 32 mpg dashboard, 29 mpg at the pump;)

 

[bootlegger]

What did I say ? I said 32 mpg dashboard, 29 mpg at the pump;)

Sorry, didn't realize what you meant by "at the pump".

 

[Ebm]

You guys in the 5.0 are slacking, I can get 40mpg easy going downhill with no throttle :lol:

 

[GT-SV]

Sorry, didn't realize what you meant by "at the pump".

Likely he meant calculating mpg (manually) by;
miles driven on tank (per odometer) divided by number of gallons to fill up (per the pump readout).

 

[bootlegger]

Likely he meant calculating mpg (manually) by;
miles driven on tank (per odometer) divided by number of gallons to fill up (per the pump readout).

Yes, realized that. I had mentioned that method to him before I knew what he was talking about.

 

[NoVaGT]

If all else remains the same then yes simply adding the DI would equate to 10-15% gain in fuel economy.

But the changes to the 18 Coyote are more than just the DI. They added displacement and increased flow into the engine (better intake manifold, better heads). All that will increase fuel consumption and it will negate alot of the "10-15% gains in fuel economy" from the DI.

The ignorance continues.

The added displacement is the only thing that would increase consumption. Everything else would aid it.

 

[gmupatriot]

The added displacement is the only thing that would increase consumption. Everything else would aid it.

From my personal experience of driving this car for 800+ miles, the A10 is the real reason behind the reasonable gas mileage from a 460HP engine. Do keep in mind that my rear end is a 3.55 so folks with a 3.15 rear probably get better highway mileage or can expect better mileage than 3.55.

 

[FirstGT]

I had 583 mpg yesterday. I forget how to post pics though

 

[hinch]

I've read PP owners here absolutely swearing they get 30MPGs on the freeway.

This shows you that what people here claim is worth something slightly less than nothing.

over in the uk many of us are regularly getting 30+ on motorway drives stick it at 70 in 6th quite happily get 30-35 here. fuel quality difference maybe ?

 

[Ebm]

.

From my personal experience of driving this car for 800+ miles, the A10 is the real reason behind the reasonable gas mileage from a 460HP engine. Do keep in mind that my rear end is a 3.55 so folks with a 3.15 rear probably get better highway mileage or can expect better mileage than 3.55.

That's laughable...

The A10 gets 1 mpg better in the city. Hardly a reason why the GT is as efficient as it is. More to do with a great engineering and design effort of the aerodynamics of the car and motor.

 

[gmupatriot]

That's laughable...

The A10 gets 1 mpg better in the city. Hardly a reason why the GT is as efficient as it is. More to do with a great engineering and design effort of the aerodynamics of the car and motor.

Have you driven the new GT?

Of course, the better aero and design help, but I assure you the A10 helps in the bigger picture. No, it is not some magical unicorn either.

 

[Freedom]

2017 5.0 auto city 15 highway 24 combined 18
2018 5.0 auto city 16 nighway 25 combined 19

i wanna pop in to say 2016 GT Auto gets 16 local, 25 highway, 19 combined.

While it doesnt bother me too much since gas is cheap, GM's LT1 engine is a pushrod and by design isnt as efficient as a 4V DOHC. Coyote makes the same amount of power but less torque due to displacement however the SS has superior gas mileage. I know the manual uses some hijinks like 1-4 gear change in the manual to get 16/25 mpg but its 8 speed auto (less efficient than the new 10 speed) can get 17/27 WITH wider tires compared to our puny 235/50/18 squared base setup while GM uses Front: P245/40R20, rear: P275/35R20. I know the 2V pushrod design allows for easier application of cylinder deactivation which GM employs but I am still slightly disappointed Ford didnt include this. Some of you guys might be disgusted by me thinking of this. But cmon, 30mpg highway V8 sounds killer as a concept.
The coyote has much more room to develop for power and efficiency like cylinder deactivation in the future but it sure shows how much GM has pushed pushrod design.
Woah even Dodge's SRT motor can get 25mpg at 4200 lbs!

 

[GT-SV]

I get 30mpg highway in my 16 performance pack and 22 combined consistently.

Let us know what speeds (mph) you drive at to get 30mpg highway consistently?

 

[17]

Let us know what speeds (mph) you drive at to get 30mpg highway consistently?

He probably lives in some remote area, where his commute to stores or work are separated by long stretches of flat highway with tailwind at all times.

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