6.7L Powerstroke v8 Diesel MPG and Problems

The Ford 6.7 Powerstroke engine gets 16 mpg on average. It can increase to up to 21 mpg on the highway.

Owners report that it gets 9 mpg while towing heavy load, and 20 mpg with no load.

If you have less cargo, drive slower and steady, and have tailwind you will get higher fuel mileage.

The 6.7L from Ford aka scorpion has been around since 2011.
It is used in the f-350 and f450 truck and also Ford F-250, Ford F-550, Ford F-650, Ford F-750.

The 3rd generation started in 2020.

500k engines were sold in 2011-2014, was gen 1.

Gen 2 was 2015-2019


Problems include:

  • Fuel pump failing
  • Turbo charger bearings failing
  • EGT sensor fail
  • EGR cooler issues
  • Nitrogen oxide sensor
  • Injection Pump Failure
  • Engine 2011 had weak glow plugs
  • Radiator Coolant Leaks

Here is a video of things that are wrong:



Engine Specs:

13 quarts of oil

660 @ 1600 rpm to 1050 at 1800

HP 270 to 475


B20 Biodiesel Compatible & Ultra Low Sulfur Diesel

Weight is 1100 lbs wet

6,700 cc (406 cu in)
Aluminum Cylinder head
Compacted graphite iron Cylinder block
Compression Ratio 16.2:1
steel crankshaft
powdered-metal cracked-cap connecting rods
4 valves per cylinder
oil change due every 7.5k miles/1 year


2022 version:

475 HP, 1050 lb-ft

compare to gas at 385 HP, and 430 lb-ft

Can last 500k miles or more.

Overall the 6.7 is very reliable and much better than 6.0 and 6.4. The 6.7 gets 18% better mpg than the 6.4.