A Diesel Toyota Tundra May Not Be Far Off

Updated July 21, 2026
toyota-tundra-diesel

Rumor has it Toyota could add a diesel option to the 2015 Tundra. As a Chevy 2500HD turbo-diesel owner, that is news worth getting excited about.

The case for diesel is simple: more power, better towing, and better mileage. My 2500HD tows a 10,000-pound trailer with another 1,000 pounds of junk in the bed and still returns 15 mpg. The catch is size. A three-quarter-ton truck is a pain to park downtown, which is why a smaller diesel that does most of the same work is so appealing.

For comparison, the 2013 Tundra is rated at 13 mpg city and 18 mpg highway on gas. For a modern truck, that is hard to be impressed by.

The good news is the rest of the industry is finally moving. Nissan announced plans for a diesel Titan, and hopefully a diesel Frontier. Ram announced a 1500 with a diesel option, and GM announced plans for a Chevy Colorado diesel. It is about time.

The dream truck? A Cummins-powered Toyota with a small Allison transmission pulling 45 mpg. That one does not exist yet. What would your ultimate diesel truck be? Post in the comments.

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