The 2021 Chevrolet Tahoe, on new architecture, is 6.7 inches longer than the current version and has an independent rear suspension. It can carry up to 66 percent more cargo behind the third row and 30 percent more behind the first row. The Tahoe will be offered in six trim levels: LS, LT, Z71, RST, Premier and High Country. A 5.3-liter V-8 engine rated at 355 hp powers all trim levels except the High Country, which has a 420-hp, 6.2-liter V-8. A Duramax 3.0-liter inline-six turbodiesel is optional on all models except the Z71. Each engine comes with a standard 10-speed automatic transmission with electronic shift control.