We put three of the newest and most powerful diesel HD pickup trucks to a towing MPG test on the Denver 100 loop. The contestants were the 2025 Chevy Silverado HD Trail Boss, 2025 Ford F-250 Tremor, and 2025 Ram HD Rebel.
We compared the fuel economy of the new 2025 Toyota Tundra TRD Rally twin-turbo V6 against an older TRD Pro V8 model on a real-world MPG test around Denver, Colorado.
