Any bump in fuel economy, even if it’s just one mile per gallon, is a big deal for trucks. And, as we had figured, the new 10-speed automatic transmission fitted to the 2017 Ford F-150‘s twin-turbo 3.5-liter V-6 delivers better EPA estimates than the 2016 model. And yet it’s not the most efficient powertrain you can get in an F-series.
A standard-payload, two-wheel-drive F-150 in this configuration is now rated at 18 mpg city and 25 mpg highway, compared with 17/24 mpg with the same engine and the previous six-speed automatic transmission. Four-wheel-drive versions get 17/23 mpg, also up by 1 mpg for each cycle.
For the F-series, though, the 3.5-liter EcoBoost/10-speed combo isn’t the reigning EPA champ. That goes to the two-wheel-drive 2.7-liter turbocharged V-6, at 19/25 mpg. That model, along with all other F-150s that don’t have the twin-turbo V-6, still comes with the six-speed automatic. Even the 3.5-liter non-turbo V-6 receives an rating of 18/24 mpg, or just 1 mpg lower on the highway than the model with the 10-speed. Move up to the 5.0-liter V-8, however, and EPA ratings drop considerably, to 15/22 mpg.
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All other EPA ratings for the 2017 F-150, according to Ford, are unchanged. Considering that the 2017 Toyota Sien...