The 2015 Toyota Tundra comes with either a 4.6-liter V8 engine or a 5.7-liter engine, but both models use gasoline, not diesel. The Tundra gets an average of 13 miles per gallon for city driving and 18 miles per gallon for highway driving.
Toyota has stated that the company will not be adding a diesel Tundra into its lineup in 2016, mainly due to emissions standards. Cost is also a factor because after-treatment systems can add up to $3,000 to the cost of a diesel vehicle. The 2015 Toyota Tundra has a manufacturer's suggested retail price of $28,510 to $47,975, depending on the specifications and optional features.