The fuel economy complaint is a non-issue. The Tundra is really no worse than any other V8 truck with 1/2-ton capacity and spark ignition.
Check Fuelly. There are literally millions of miles logged from GM, Ford, RAM, and Toyota owners. Guess what? They all get about the same fuel mileage.
From fuelly the Tundra from 2015-2020 with the 5.7 V8 avg is 13.9 mpg, The F150 3.5 ecoboost is 16.1, the Silverado 1500 with the 5.3 is 16.2. A 2.2-2.3 mpg spread might not sound like much but it's around 15%, that's significant and adds up over time. I used the 3.5 ecoboost for the Ford because that's the closest equivalent to the 5.7 even though it's a V6. The difference in my opinion is mostly explained by direct injection in the Ford and Chevy engines, the Toyota isn't direct injected.
