What’s everyone getting for fuel economy?

[JacksonJay]

First off I know there is threads out there about this, let’s make this one different.

What’s everyone doing to get better economy? I realize that’s not what these cars are for, but I’m doing lots of highways miles as of recent, and anything helps right? My theory is more power, the less fuel it takes to move the car. Or in other words, an engine working less hard is a more efficient engine. So I told the wife listen, I’m slapping an intercooler on, downpipes, and lowering the car. I don’t care about the dollar amount spent going into the car, I care about travelling longer between gas stations. Doing below the speed limit is not an option, speed limit, or better.

Let’s hear it!

 

[Loaded05]

Your theory is flawed. If you are making more power, you are using more fuel.

 

[JacksonJay]

Your theory is flawed. If you are making more power, you are using more fuel.

Yes and no, if the power is made more efficient, it will be better. For example If I’m cruising at 2psi boost, and I replace the intercooler and now I cruise at 1psi, it will be better

 

[GearHead_1]

What’s everyone getting for fuel economy?

Dashboard reading only, not hand calculated, so take it with a grain of salt. I don't really bother with hand calculation because I don't really care. Running in Sport Mode when I drive and Normal when my wife drives, split about 50/50, getting 22 MPG. Interestingly, we do a lot of short trip driving, which leaves me feeling pretty good about that reading. I've seen it touch 28, on a longer freeway trip, but more often 26, running in Normal Mode. I've never even given ECO Mode a fair shot.

 

[Gadgtfreek]

I think my new one is still figuring it out. Hand calculated on a trip, it was 23 miles per gallon. When I fill up on Friday for the following work week, the range is all over the place. My daily commute is pretty easy; in the morning, I get almost 65 miles per hour on cruise for 25 miles. In the afternoon, it's half 65 and half 4-lane with red lights, but I use adaptive cruise and stop-and-go driving and just take my time. When I filled up last week, it said 325 miles to empty, which was LOW, and it took a while even to start counting down. This weekend's fill-up shows 348 miles, which is terrible for a 20-gallon tank. So, once again, I think it may still be a learning process. Im also not even getting in it yet or really using sport mode, since its still low miles.

 

[2020FordRaptor]

First off I know there is threads out there about this, let’s make this one different.

What’s everyone doing to get better economy? I realize that’s not what these cars are for, but I’m doing lots of highways miles as of recent, and anything helps right? My theory is more power, the less fuel it takes to move the car. Or in other words, an engine working less hard is a more efficient engine. So I told the wife listen, I’m slapping an intercooler on, downpipes, and lowering the car. I don’t care about the dollar amount spent going into the car, I care about travelling longer between gas stations. Doing below the speed limit is not an option, speed limit, or better.

Let’s hear it! View attachment 32159

More power doesn’t necessarily mean better gas mileage, most times it’s the opposite cause you’re using more fuel to make more power.

 

[cheetoduster]

Yes and no, if the power is made more efficient, it will be better. For example If I’m cruising at 2psi boost, and I replace the intercooler and now I cruise at 1psi, it will be better

On topic - I get 13 - 14 MPG.

 

[JacksonJay]

View attachment 32167

On topic - I get 13 - 14 MPG.

On E?
I get about 23.5 on the open road, through SLC it goes up to 30+ some how at 75mph

 

[Nascarbilly]

2025 Exp ST, 2087 total miles since January 2025:
Primarily driven around town in SPORT Mode except once I am on freeway road trips, cruising speed limit +5mph to Bay Area
Although, I do particularly like approaching freeway onramps as fast I can safely (pending traffic)

Only Performance Upgrades:
__ K & N Performance Air Filter
__Resonator Delete and H-Pipe exhaust install
__Premium 91 Oct in CA

Lowest MPG: 14.7
Highest MPG: 24.4
Average MPG over 10 fill ups: 19.2

That being said, I have now spent more time tonight confirming my MPG's than I have after any particular fill up. I bought this ST to replace a SHELBY GT!!!

 

[JacksonJay]

2025 Exp ST, 2087 total miles since January 2025:
Primarily driven around town in SPORT Mode except once I am on freeway road trips, cruising speed limit +5mph to Bay Area
Although, I do particularly like approaching freeway onramps as fast I can safely (pending traffic)

Only Performance Upgrades:
__ K & N Performance Air Filter
__Resonator Delete and H-Pipe exhaust install
__Premium 91 Oct in CA

Lowest MPG: 14.7
Highest MPG: 24.4
Average MPG over 10 fill ups: 19.2

That being said, I have now spent more time tonight confirming my MPG's than I have after any particular fill up. I bought this ST to replace a SHELBY GT!!!

Interesting, my wife made me get rid of my GT350 because the roads were too bad where we lived… now we moved and she wants a car again ‍♂️ the ST will never sound like a GT350 but a GT350 will never launch like a tuned ST

 

[Nascarbilly]

Interesting, my wife made me get rid of my GT350 because the roads were too bad where we lived… now we moved and she wants a car again ‍♂️ the ST will never sound like a GT350 but a GT350 will never launch like a tuned ST

@JacksonJay:
Agreed!!!
It got to the point where it was becoming almost impossible to get in/out of the SHELBY cars, especially in a parking lot. They are lowered 1 1/2" at Shelby American during the build.

 

[Gadgtfreek]

I looked, 1200 miles, mine says 19.2 on the Fuel Economy screen. Not sure how good that is or how long it reads over (time period). If thats accurate, Id hate to see it when I start using Sport more lol.

 

[-REDRUM-]

high 13's to low 14's if I drive in standard mode full time... mid 11's if I drive in Sport mode full time. I'm almost full bolt on with e85 tune. Now to be fair... I do have a hard time keeping my foot out of the gas...

 

[Gadgtfreek]

That's what made me laugh about modded and more HP being better for fuel economy. Um, the more mods, the more I get in the pedal...

 

[Nascarbilly]

That's what made me laugh about modded and more HP being better for fuel economy. Um, the more mods, the more I get in the pedal...

@Gadgtfreek: Great comment!!
Whenever I drive my Prius V like it is a SHELBY, unfortunately, the MPG's drop also. Don't laugh, the "electric" component of the hybrid operation gives it rather quick acceleration, same idea as for any other electric car. I have yet to meet any Corvette, Porsche, BMW, Mercedes, Shelby, you name it gas car, that can compete with the electric cars on take off up to 60-80mph.

 

[Gadgtfreek]

I get it. I've watched a lot of longer races between Dark Horses and others. They are quick off the line for sure. I've had the ioniqs and teslas just take off from a light in the mornings next to me. I'm like WTF, give me a warning. Oh wait you cant make any noise...

 

[Nascarbilly]

"and teslas just take off from a light in the mornings next to me. I'm like WTF, give me a warning. Oh wait you cant make any noise"

My Son's in-laws have a Tesla Y, I have been the driver of what you just described and it is the weirdest feeling. You are gone in a second!!!!

 

[JacksonJay]

This is all interesting, I’m finding no one cruises in eco on road trips? I’m strictly eco until someone is reeling me in quickly, or a mustang pulls up last week in Seattle I was going from I5 to I90 and there was a bmw bangin and popping behind me through the tunnel, so I said it’s on…… I won LOL I also bagged my buddies widebody redeye. I only ask because I am recently driving between Northern BC and Phoenix AZ weekly to visit my wife until I can find work and get my green card! The sad thing is, I almost spend more on fuel driving in Canada for 5 hours than I do in the States for 20 hours……

 

[Gadgtfreek]

I hate Eco, even with adaptive cruise. It takes forever to get going, leaving gaps for other cars to jump in. If I were that worried about MPG, I would have gotten an Explorer Platinum with the 4 banger. Just my 0.02.

I've tried using Eco on my adaptive cruise stop-and-go trips home from work. Can't do it.

 

[2020FordRaptor]

This is all interesting, I’m finding no one cruises in eco on road trips? I’m strictly eco until someone is reeling me in quickly, or a mustang pulls up last week in Seattle I was going from I5 to I90 and there was a bmw bangin and popping behind me through the tunnel, so I said it’s on…… I won LOL I also bagged my buddies widebody redeye. I only ask because I am recently driving between Northern BC and Phoenix AZ weekly to visit my wife until I can find work and get my green card! The sad thing is, I almost spend more on fuel driving in Canada for 5 hours than I do in the States for 20 hours……

I’m in sport 99% of the time, and usually get around 22-23 with my heavy foot on two lane roads. Around 18 around town in Sport, when I am careful I can get up to 20. I still do have a really heavy foot.