Another Powerboost horrible mileage thread 12mpg

[jcaspar]

Mine has been getting better recently. January 21 build. 11,000 miles on it. Lifetime average 18.6, last tank 17.4 but I have had a few trips recently in the 22 to even 27 range. It is SOOOO dependent on driving style on the freeway. Drive 65 and you get great mileage, 80 and it drops significantly. A lot of stop signs really kills mine with all the restarting from stop.

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[notabot]

It has been 85-90* here today. I was getting about 18mpg doing 80mph on I-95.... and I couldn't keep up with traffic.

This morning coming back from breakfast, it was cooler around 65* out, mostly doing 45mph, and got 23mpg.

PB 157wb, no level, LT285/60r20 Geolandar G015

Seeing the same king of mpg when driving conservatively. Can repeat at will...

 

[Mash150]

Mine has been getting better recently. January 21 build. 11,000 miles on it. Lifetime average 18.6, last tank 17.4 but I have had a few trips recently in the 22 to even 27 range. It is SOOOO dependent on driving style on the freeway. Drive 65 and you get great mileage, 80 and it drops significantly. A lot of stop signs really kills mine with all the restarting from stop.

Forgetting exactly what article I was reading, Car and Driver maybe, but nevertheless, it was indicated that they use a factor of .7 to get real driving mpg as compared to the window sticker. So if the sticker indicates 24 mpg times .7 this would be 16.8.

Here in Canada, the sticker reads 9.8 litres per 100 kms. on a 21 PB, where dividing by .7 indicates 14 litres of gas per 100 km. My lifetime on the truck screen is 13.4. At times I can get it down to 11.2 on the highway , usually with the wind from behind. City driving between 10 and 12. FWIW

 

[Maximum Effort]

My stock 2022 Lariat PB with max tow has 2500 miles on it. I live in the most north eastern part of NY. (Can literally see Canada and VT.) so it has been very cold. My trucks all time mpg is 18.2. This includes 15 minute remote starts 5 days most weeks, and several times towing 5,000-6,000# enclosed trailer. When driving without the trailer I use eco mode and most trips are between 21-26 mpg on secondary roads @ 55 mpg. Highway driving is usually 18-21 @70-75 mph. Towing is 8-9 mpg.

I am very happy with these numbers. The f250 Tremor I traded in was 14mpg and 9 towing.

 

[mpnF150]

I have over 4000 mile on mine. A recent trip from Bend to Portland I got 29.6 mpg, but often would tap brakes to kick into electric mode. Overall since purchase averaged about 21 on trip meter. Not bad.

 

[DBL R]

I finally did it. Ambient temps are finally out of the 40’s, and I finally beat the EPA estimate. Highway and city mixed driving, it’s doable!

 

[imnuts]

My drive home from work this afternoon.

 

[2drunk2]

As crazy as it sounds, I think the PB is sensitive to something with the fuel, not necessarily the grade. In Colorado, I consistently get 22, regardless if short drives of a few miles and a lot of idling (winter and summer) or crossing the state at 85 mph and going through the passes.

Every time I fill up in Texas, mostly San Antonio and Corpus Christi, I am getting 15 mpg. Using name brand gas stations and premium fuel. No idea why but this has been my result every time and have done multiple trips.

 

[Gros Ventre]

Powerboost-Am seeing these: @55-65 mph: 24-26mpg; @80mph (I-80 in Wyoming) 20-21mpg; Towing small trailer (w/big ramp eg lots of wind drag) & full load (@72mph on I-80): 15.1 mpg.

 

[PaulO]

Powerboost-Am seeing these: @55-65 mph: 24-26mpg; @80mph (I-80 in Wyoming) 20-21mpg; Towing small trailer (w/big ramp eg lots of wind drag) & full load: 15.1mph.

What kind of fuel? Premium or 87?

 

[Gros Ventre]

Straight 87...

 

[Oxford_Powerboost]

Weather is making for some nice mpgs this tank. I’m still shocked by how much a 25 degree outside temperature change changes the fuel economy in this thing

 

[Severdog]

I’m still shocked by how much a 25 degree outside temperature change changes the fuel economy in this thing

I always see a big jump when we move to summer blend; I wonder when this happens everywhere?

 

[jtake]

Last week, drove 2500 miles from CA to NC on I40 towing a small trailer. Maybe 3000lbs in the trailer and a full bed load (another 1000lbs). Trip average was 10.1 mpg using 87 and speeds of around 70mph.

I did notice better fuel mileage when driving 65 mph as the miles to tank number would increase significantly, but I take too much offense to trucks in front of me to drive that slow.

 

[Stuckey in NC]

Transmission is still terrible but I can’t complain about mileage. Round trip to Delaware from NC to see family over Easter.

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