Chevy Tahoe/Suburban, GMC Yukon, and Caddy Escalade Diesel MPG
We already knew that the next generation of full-size SUVs from General Motors, including the 2021 Chevrolet Tahoe, Chevrolet Suburban, GMC Yukon, and Cadillac Escalade, were expected to offer a diesel engine option. Now, however, we know just how efficient this powertrain is for big three-row SUVs – or at least two-wheel-drive iterations.
The 2021 Chevrolet Tahoe diesel leads the lineup with a 24 mpg combined city and highway rating. It’s much more fuel-efficient than the gasoline-powered Tahoe, which peaks at 18 mpg. The beefier 2021 Chevrolet Suburban diesel gets 23 mpg, a sum that surpasses the gasoline model’s rating by 5 mpg. For reference, the EPA rates the 2021 Infiniti Q60 sports coupe at 22 mpg combined, regardless of the condition of its six-cylinder engine.
Likewise, the diesel-powered GMC Yukon impresses at 23 mpg. This number is true whether you go for the regular version or the long wheelbase. Yukon gas achieves a maximum rating of 18 mpg. Likewise, the luxurious Escalade diesel gets 23 mpg, ahead of the 17 mpg provided by the model’s rugged 6.2-liter V-8 gasoline engine.
GM’s full-size SUV’s 3.0-liter inline-six turbo-diesel engine is expected to deliver 277 horsepower and 460 lb-ft of torque on all models. Power is channeled through a familiar 10-speed automatic transmission. GM has only released fuel consumption figures for rear-drive versions of diesel SUVs; the four-wheel-drive variants will likely come in 1 or 2 mpg lower.
Full-size SUV GM Diesel MPG
Chevrolet Tahoe Diesel 2021: 21/28/24 mpg
Chevrolet Suburban Diesel 2021: 21/27/23 mpg
2021 GMC Yukon Diesel: 21/27/23 mpg
Cadillac Escalade Diesel 2021: 21/27/23 mpg