Despite having “eco” in its name, the Ford F-150’s newest engine, the 2.7-liter EcoBoost V-6, did not woo Wards Auto in its yearly 10 Best Engines test simply because of fuel economy. Wards’ independent testing showed the turbocharged V-6 only averaged between 17.6 and 19 mpg over a 253-mile test loop in a 4WD supercab truck. What’s worse, checking the fuel economy manually by filling up the tank and dividing miles by gallons revealed a dismal 15.6-mpg average.
That’s a far cry from the EPA’s estimated fuel economy of 20 mpg combined and 23 mpg highway.
Adding insult to injury, Wards claims to have gotten better fuel mileage in the naturally aspirated 5.0-liter V-8. While the author didn’t dive into details, the EPA rates the Coyote V-8 at 15 mpg city and 21 mpg highway.
Wards had a lot of good things to say about the 2.7-liter EcoBoost, despite its poor fuel ratings, however. “This all-new F-150 pickup engine is compelling for several reasons, particularly the “hybrid” block construction that uses compacted-graphite iron for the upper part and aluminum for the bottom, as well as aluminum heads with integrated exhaust manifolds.”
Also mentioned were the fracture-split connecting rods, the variable-displacement oil pump, composite oil pan, and “smooth-functioning” start/stop system. In other words, the EcoBoost is a marvel of modern engine building. Sadly, it failed to deliver on its promise of fuel economy – at least for Wards.
While we hold in high regards the validity of the results, we have to wonder if the particular F-150 tester was having issues. We’ll reserve judgment until a broader field of trucks show the same symptoms.
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