When automakers offer both a gasoline and a diesel engine in their trucks, they will typically charge a premium for the diesel engine. The 2021 GMC Yukon Denali bucks this trend, however, as the available oil burner in the SUV actually costs less to equip than the V8.
The base price for a 2021 GMC Yukon Denali with the GM 6.2L L87 V8 engine is $69,695. However, this price dips to $68,195 when the available GM 3.0L LM2 inline-six Duramax turbo-diesel engine is equipped, representing a rather significant savings of $1,500.
This discount compounds with the potential fuel savings the 3.0L LM2 diesel engine offers, as well. While the official EPA-certified fuel economy ratings for the 2021 GMC Yukon Denali diesel have not yet been released, the fuel economy ratings for the 2021 GMC Sierra provide an indication of the type of efficiency gains to expect. When equipped with the 3.0L diesel engine, the Sierra is rated at 22 mpg city, 26 mpg highway and 24 mpg combined, while similarly equipped 2021 GMC Sierra trims with the 6.2L L87 V8 engine are rated at 16 mpg city, 20 mpg highway and 17 mpg combined – an improvement of around 30 percent.
The 3.0L LM2 turbodiesel is rated at 277 horsepower and 460-pound-feet of torque and is paired exclusively with the GM 10-speed automatic transmission in the various trucks and SUVs that it is offered in. The engine is being offered as a late availability option in the GMC Yukon and Yukon XL and Chevrolet Tahoe and Suburban for the 2021 model year. The order books for the diesel engine versions of the SUVs will open in November.
It will be interesting to see if taking $1,500 off the initial buying price of the 2021 GMC Yukon Denali will be enough to convince buyers to opt for the more efficient diesel engine over the thirsty 6.2L L87 V8.