F-150 - Ecoboost MPG Figures

[IndyIan]

Originally Posted By: SteveSRT8

Personally, I think your daft if you think any 360+ hp motor is likely to get 20 mpg in any vehicle weighing well over 2 tons, but the Ford Faithful are hoping...

That's the reason for the turbo's on small engines though, like the Cobalt, it should have good power with good mileage...
I wonder if there is a BSFC chart for the eco-boost online? I bet to get good mileage it needs to be driven at 2/3 throttle or 10%, and nothing else. 2/3 thottle allows the turbo's to make power efficiently and 10% lets it just tick over idling down the road once its up to speed.

 

[Virtuoso]

I'm not sure I'd be able to keep my foot off the gas enough to ever get EPA in anything with an EcoBoost motor.

It's gotta be just too much fun to open it up!!


I agree you can't defy physics. We're still talking about full sized F150's with all the fixins and stout gears to boot.

 

[Ben99GT]

Originally Posted By: SteveSRT8
well, so far we've seen 3 personally and a couple here, and not one broke 20 mpg.

Still waiting for more info on this one.

Personally, I think your daft if you think any 360+ hp motor is likely to get 20 mpg in any vehicle weighing well over 2 tons, but the Ford Faithful are hoping...


Check out the F150 forums, there are numerous people reporting 19-23 MPG on the highway.

An example
Quote:
1870 miles as of lunch today. 3.55 rear end:
• First 800-1k got 19.5ish on the highway (around 200 miles one way) Avg 77mph.
• After 1k I got up to 22.5 on the highway (around 300 miles one way); 19.5ish with wind in my face otw back. Avg. 77mph both ways.
• Total of tanks after the first fill up at dealership has averaged 17.630 according to aCar app on my android. This includes long periods of idling due to showing truck to friends and family when I first got it as well as getting on the gas pretty good some to show the giddy up off too.
• Best tank has been one where I had 447 miles when the light came on (at 40 miles left it comes on). I was tempted to drive it to empty to see if I really got 480+ miles out of the tank

 

[milwaukee]

Originally Posted By: JasonC
The Ecoboost will eat up the all the other 1/2 ton makes V8 in towing and performaance with better MPG to boot. I had a 2006 5.3 Silverado and while it towed ok it only average 15mpg empty and the Ecoboost has almost 100ft lbs more torque and is rated for more MPG to boot.
Does the 06 have AFM? My 2010 xtra cab Silverado 4x4 with 5.3 averages ~19.5 of 60% city driving. This takes some effort but not much more than a light foot.

 

[abs]

I have a FLEX with the EB engine, I know slightly different than the version in the 150. The car is very sensitive to driving style. My wife regularly gets 20+ mpg in it whereas I usually get 18-19mpg. I've noticed that the engine is most efficient below 2k rpms and also using a lot of fuel while idling (more than any other car I've owned). I just finished a run on Castrol Edge 5w-20, did not do a UOA, but was getting poor fuel economy. Just switched to PP and looks like I'm up about 2mpg on a fresh tank of gas versus what I was getting before the oil change. My OCI is only 5k. Bottom line, the engine seems sensitive to different oil chemistry and driving style matters.

 

[SteveSRT8]

please don't be offended, EBossters, but my point is you can't use the power to get mileage?

[censored], my old 05 Silverados will get almost 20 mpg if you soft pedal them all the time.

But who really drives that way? Ford specifically advertises it as the v6 that has the power of a v8 with the economy of a v6. I am very impressed with the motor except with regards to longevity and fuel economy.

 

[Steve S]

It takes 300 HP of gas to make 300 HP.

 

[supton]

I thought that was the point: under light loading, it's a smaller engine. So at idle, and part-throttle, it yields the same mpg as a smaller engine. Under heavy loading and WOT, the boost "makes up for" the lack of cubic inches.

Thus, under equivalent loading, it should get similar mpg's as a V8, or better. That said, it's still a truck, with the aerodynamics of a trunk; and some vehicles do seem to lose mpg's faster as the speeds go up (faster than you'd think, anyhow--I know air drag goes up as the square of speed and all, but some seem to fall off a cliff at a magic speed).

 

[abs]

I haven't towed anything with my Ford Flex (it does have the tow package) and it is very true that driving with a lighter foot will improve fuel economy. Allowing the transmission to shift before 2k rpm and accelerating to that rpm at a conservative rate will keep the boost a little lower and result in better economy. Also, I've found that coasting to lights and avoiding both heavy acceleration and long idling further improves economy.

This engine gains much of its fuel economy benefits from the Direct Injection + Turbo setup which is similar in design to modern turbo-diesel setups.

I now have just over 30k miles on the car and I've noticed that my fuel economy has dropped off a bit over the last 10k or so. As a result, I'm in the process of swapping out all my fluids (transmission with Mercon LV, transaxle/PTU with OEM Motorcraft 75w-140 synthetic and the rear differential with Mobil Delvac 75w-90) in the hopes that by removing all the break-in particles and upgrading the rear differential fluid I will gain some mpg.

 

[supton]

Worn tires? Alignment? It's pretty warm out now--a/c usage?

 

[Ben99GT]

Originally Posted By: supton
I thought that was the point: under light loading, it's a smaller engine. So at idle, and part-throttle, it yields the same mpg as a smaller engine. Under heavy loading and WOT, the boost "makes up for" the lack of cubic inches.

Thus, under equivalent loading, it should get similar mpg's as a V8, or better.


That is the point. Drive it normally/gently, get V6 fuel economy, drive it hard, get V8 power (and V8 fuel economy).

It's not a hard concept to grasp.

 

[supton]

Seems to me then that if one doesn't get 20mpg, then they're driving too fast. Not sure if a V8 would do better under those conditions; but when you're trying to get a heavy brick up to speed and then hold it there... I guess if you're bound to either a) tow a lot, or b) drive fast all the time, then a regular V8 makes more sense; no fancy gizmos to deal with. [I say that as a driver of a turbo car--I like my turbo.]

In the end it's a big heavy pickup. I'm amazed they can hit 20mpg let alone anything above that.

 

[Steve S]

My wife gets close to 20 mpgs "empty" on her Diesel F250 driving at conservative speed. And the truck is a big pig. It weighs over 6,500 lbs empty.

 

[Cujet]

I've got a 2011 F150 Super Crew XLT 2WD as a part time company truck.

I own a 09 F150 5.4L Super Crew 4x4.

From time to time we use both trucks at the same time. The difference in real world economy is significant.

The Ecoboost can return 20+ MPG IF you drive very easy. That's incredible. Generally, I see 19+ per complete tank. (we have to track it for work). Speed limit always on the company truck.

My 5.4L V8 cannot do that well, no matter how it's driven. The best tank I've seen is 15.5 in mixed driving. A little better is possible if I drive annoyingly slow, and never exceed 45MPH.

The Ecoboost is considerably faster too.

Both trucks get similarly poor MPG's at "high" highway speeds.

 

[panthermike]

Originally Posted By: Cujet
I've got a 2011 F150 Super Crew XLT 2WD as a part time company truck.

I own a 09 F150 5.4L Super Crew 4x4.

From time to time we use both trucks at the same time. The difference in real world economy is significant.

The Ecoboost can return 20+ MPG IF you drive very easy. That's incredible. Generally, I see 19+ per complete tank. (we have to track it for work). Speed limit always on the company truck.

My 5.4L V8 cannot do that well, no matter how it's driven. The best tank I've seen is 15.5 in mixed driving. A little better is possible if I drive annoyingly slow, and never exceed 45MPH.

The Ecoboost is considerably faster too.

Both trucks get similarly poor MPG's at "high" highway speeds.


That sounds like what I've heard from everyone else. The 5.4 is a good motor but it's hard to beat better economy AND far more power.