2020 GMC Sierra 2.7T L3B - towing MPG
Bryan Frambach Bryan Frambach
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 Published On Apr 2, 2020

We re-check the fuel mileage on the 2.7L 4-cylinder turbo only to be disappointed :(
12.74mpg towing a 2-seater side-by-side on an aluminum trailer.
My question is; why not just get the 5.3L V8? More horsepower, more torque, AND better fuel mileage! Plus, no turbo to go out. The Chevrolet V8 is tried and true. Let's keep it simple.
Got a buddy with a Sierra 5.3L towing a 4-seater SxS on a much heavier, steel trailer and he's claiming he's getting 14mpg.

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