The Tundra is older technology, DOHC V-8. Port FI.
But that's why I bought it: simple = reliable
All of the trucks that get better MPG do so through various technologies, MDS, turbos, "flaps" on the radiator, that have the potential to break or cause problems. I get relatively low MPG. 14 HWY on E85. 17-18 HWY on gasoline.
But I don't care. I really don't.
I wanted a reliable truck. I was replacing a much-loved 1990 Toyota 4-Runner that had gone nearly 280,000 miles (and is still on the road). And I wanted that crew max configuration to balance passenger comfort for road trips. I put 3,000 miles on it in the first 9 months I owned it. I put nearly 5,000 miles on it in the past month - drove back from Colorado, hauled dirt from Lowe's, gone out to dinner, moved furniture, ran up to D.C. and bought furniture, and twice drove to New York.
It's been great.
I love the truck. It's been used exactly as intended: road trips, hauling big and/or dirty things, taking several people places in comfort.
The 5.7 loves to rev, makes great power and sounds great doing it. I like the flex fuel option (I don't save $$ with the alternative fuel, but the octane boost provides noticeable performance increases). The six speed shifts smoothly and drops the RPM on the highway for comfortable cruising. The big brakes have good feel and are smooth and powerful. The interior is just plain nice. Comfortable, well put together, tons of room and lots of nice features.
The F-150 was an impressive truck. So was the Silverado. And I really liked the Ram.
The Tundra was a decision predicated on reliability and a love of the 1794 Interior.