[BahamaTodd]

2018 Mustang 5.0 and 10 speed auto: 16 city / 25 hwy / 19 comb

https://www.autoblog.com/2017/10/03/...usauto00000016


That's a slight improvement over the previous 2017 non-direct injected 6 speed auto: 15 city / 24 hwy / 18 comb

I assumed it would be closer to, or be able to exceed the Camaro V8 auto: 17 city / 27 hwy / 20 comb

[Spartan268]

Only 25 highway with the 10 speed? I know it's only a 2 MPG difference from the advertised number but that's pretty shit. I wonder if this points to very short gears which will explain the better 0-60 number they're touting.

[SpeedIsLife]

Originally Posted by Spartan268

Only 25 highway with the 10 speed? I know it's only a 2 MPG difference from the advertised number but that's pretty shit. I wonder if this points to very short gears which will explain the better 0-60 number they're touting.

The auto's are geared with 3.15's with 3.55's as an option..

Very short gears, hell the 3.55's were too much for the 6R80..to say nothing of the 10 speed.

Obviously they're going for performance over fuel economy, otherwise you'd see something like 2.87's or around 3.0 flat.

[Sol4rfl4re]

Originally Posted by SpeedIsLife

The auto's are geared with 3.15's with 3.55's as an option..

Very short gears, hell the 3.55's were too much for the 6R80..to say nothing of the 10 speed.

Obviously they're going for performance over fuel economy, otherwise you'd see something like 2.87's or around 3.0 flat.

3.55s are great for the 6R80 in 99% of situations.

[Chadicus]

Originally Posted by BahamaTodd

2018 Mustang 5.0 and 10 speed auto: 16 city / 25 hwy / 19 comb

https://www.autoblog.com/2017/10/03/...usauto00000016


That's a slight improvement over the previous 2017 non-direct injected 6 speed auto: 15 city / 24 hwy / 18 comb

I assumed it would be closer to, or be able to exceed the Camaro V8 auto: 17 city / 27 hwy / 20 comb

This window sticker is from a performance pack car. I expect the non-PP car to be slightly better. Not that 1-2 mpg is noticeable really.

[SuperSound]

Originally Posted by Chadicus

This window sticker is from a performance pack car. I expect the non-PP car to be slightly better. Not that 1-2 mpg is noticeable really.

EPA generally doesn't test for separate packages or gearing. That number is going to be for a base GT auto.


Pretty much as I expected. Essentially tied with the fat cat 392 Challengers without DI and only 8 speeds. The 18's really need to perform on track and strip to justify it's MPGs.

[Battlezone580]

I like the interior and dash of the 2018 mustang, looks nice! Also an improvement in mpg, and more hp.

End of the day its a muscle car with a V8 putting out 460hp, 99.9% of buyers aren't going to care about mpgs on the V8 model.

Originally Posted by SuperSound

EPA generally doesn't test for separate packages or gearing. That number is going to be for a base GT auto.


Pretty much as I expected. Essentially tied with the fat cat 392 Challengers without DI and only 8 speeds. The 18's really need to perform on track and strip to justify it's MPGs.

You act like you drive a Prius, your car gets 2mpg more on the highway vs the mustang... Congrats?

[SpeedIsLife]

Originally Posted by SuperSound

EPA generally doesn't test for separate packages or gearing. That number is going to be for a base GT auto.


Pretty much as I expected. Essentially tied with the fat cat 392 Challengers without DI and only 8 speeds. The 18's really need to perform on track and strip to justify it's MPGs.

The 392's have DOD also and are geared considerably taller with the A8.

[SuperSound]

Originally Posted by Battlezone580

End of the day its a muscle car with a V8 putting out 460hp, 99.9% of buyers aren't going to care about mpgs on the V8 model.

You act like you drive a Prius, your car gets 2mpg more on the highway vs the mustang... Congrats?

Take a good look at the number of threads that come up about MPG...and not just on this forum. Why yes most of us didn't buy the car for the MPG, to say no one cares is pure fiction. You may not care, especially considering you bought a ZL1 1LE, but others do. Also doesn't the argument hold for track times? Most buyers will never see a track/strip, but they still care to know the numbers. Same goes for MPG.

Originally Posted by SpeedIsLife

The 392's have DOD also and are geared considerably taller with the A8.

Indeed but I don't think DOD saves more gas than DI. But that's besides the point. How does a smaller displacement, DOHC with DI and extra OD gear in a lighter car make so little improvement in FE. I know the answer, but just seems crazy in this day with everyone going ape about EVs.

Also 3.09 vs 3.15 isn't that big a jump especially when you factor the 2 extra gears in the A10.

Like I said, it better perform otherwise the MPGs lost to better gearing are a waste. And we are talking base GT here, not the PP.

[SpeedIsLife]

Originally Posted by SuperSound

Take a good look at the number of threads that come up about MPG...and not just on this forum. Why yes most of us didn't buy the car for the MPG, to say no one cares is pure fiction. You may not care, especially considering you bought a ZL1 1LE, but others do. Also doesn't the argument hold for track times? Most buyers will never see a track/strip, but they still care to know the numbers. Same goes for MPG.





Indeed but I don't think DOD saves more gas than DI. But that's besides the point. How does a smaller displacement, DOHC with DI and extra OD gear in a lighter car make so little improvement in FE. I know the answer, but just seems crazy in this day with everyone going ape about EVs.

Also 3.09 vs 3.15 isn't that big a jump especially when you factor the 2 extra gears in the A10.

Like I said, it better perform otherwise the MPGs lost to better gearing are a waste. And we are talking base GT here, not the PP.

Well the ..4th? Generation Coyote isn't pure DI either, it's the DI/PI so I'm wondering if there's some fuel economy sacrifice there too.

But I do agree, it's..funky.

[SuperSound]

Originally Posted by SpeedIsLife

Well the ..4th? Generation Coyote isn't pure DI either, it's the DI/PI so I'm wondering if there's some fuel economy sacrifice there too.

But I do agree, it's..funky.

I didn't think about that but guess it's possible. Someone with more knowledge needs to chime in.


Also does anyone know of a scientific test showing MPG differences between regular and premium gas? Ford is using regular for their EPA testing to make it look like it costs less per year. So wonder if that could cause a loss too.

[BahamaTodd]

Originally Posted by SuperSound

EPA generally doesn't test for separate packages or gearing. That number is going to be for a base GT auto.

For the 2017 and older they did separate testing for the 4cyl. Not the 8cyl though.

https://www.fueleconomy.gov/feg/Find...37574&id=37582

[SuperSound]

Originally Posted by BahamaTodd

For the 2017 and older they did separate testing for the 4cyl. Not the 8cyl though.

https://www.fueleconomy.gov/feg/Find...37574&id=37582

That's odd for sure. The GT autos had the 3.55 ratio (vs 3.15) as an option and 3.73 for the GT PP (vs 3.31). Wonder why Ford bothered to send only the EB PP in for testing.

Found this sticker for the '18 Bullitt with only A10 showing (no PP?). Has the same ratings as your original post. Could be Ford doing the same thing again and only rating M6 and A10 base GTs.

http://www.mustang6g.com/forums/showthread.php?t=91632

Look at that sticker price

[SpeedIsLife]

Apparently there's some claiming they pulled it from Ford systems, some claiming it's fake, and Ford saying "we didn't make that"

Then again they also said the same thing in mid 2014 about GT350 badges