3.0L Duramax-Powered 2021 Chevrolet Tahoe Leads Mileage For SUV’s

I hope you like this 3.0-Liter Duramax engine because if they keep stuffing them into new cars and trucks and if they keep performing as good as they are as of late, we’re going to keep covering them. The half-ton GM trucks, the Cadillac Escalades, and now the Chevrolet Tahoe are 3.0 possessors.

Per Chevrolet’s latest press release, the 2021 Chevrolet Tahoe 3.0L Duramax turbo-diesel is the most fuel-efficient full-size SUV in its class. Better fuel efficiency supports longer trips in this best-selling nameplate known for its size, capability, and cargo.

2021 Chevrolet Tahoe LS with the 3.0L Duramax Turbo-Diesel

The Chevrolet Tahoe with the available 3.0L Duramax turbo-diesel engine offers an EPA-estimated 28 highway, 21 city, and 24 combined mpg in rear-wheel-drive models. EPA-estimated fuel economy for four wheel drive models is 26 highway, 20 city, and 22 combined mpg.

As you know, this is Chevrolet’s first diesel inline-six engine for the full-size SUV and the first diesel engine offered in these types of vehicles since 1999. For those of you who are looking at the popular Suburban over the Tahoe, the mileage for those is quite impressive still. An EPA estimated 27 highway, 21 city, and 23 combined mpg for the two wheel drive models whereas the four wheel drive units are a 26 highway, 20 city, and 22 mpg combined.

Even upgrading to the 4×4, you’re not sacrificing much mileage. Nice work, GM. “The 3.0L Duramax turbo-diesel brings a refined engine experience to the already impressive redesign of the all-new 2021 Tahoe and Suburban,” said Bob Krapes, Chevrolet Trucks marketing director. “Combining the segment’s best fuel efficiency with increased space inside of the vehicle compared to the previous generation equals an all-new Tahoe and Suburban ready for the next long road trip or family adventure.”

2020 was the launch year for the 3.0-Liter Duramax turbo-diesel engine and it started in the Silverado trucks. Utilizing state-of-the-art technologies to optimize fuel and integrate into the all-new vehicle architecture, this engine is making waves. Small changes adapt the engine for the full-size SUV application, including enhanced noise abatement and a new engine control module, specifically designed to leverage the faster data-processing power of the all-new models. The engine is exclusively paired with a 10-speed automatic transmission for a smooth shifting experience.

If you check out our testing of the Silverado, you’ll see us put this engine through its paces. Without a doubt, they mean business for the “little engine that could”. With an SAE-certified 277 horsepower and 460 lb-ft of torque, the Tahoe 3.0L Duramax with two-wheel drive is capable of maximum towing up to 8,200 pounds and a max payload of 1,717 pounds. The Suburban with the same engine is capable of a maximum towing of 8,000 pounds and a max payload of 1,625 pounds in two-wheel drive models. A standard exhaust brake is available in tow-haul mode and can provide additional driver confidence when towing.

“The 3.0L Duramax turbo-diesel brings responsive torque and a smooth driving experience, ideal for those who tow or spend many hours behind the wheel,” said John Barta, assistant chief engineer for the 3.0L Duramax. “Not only is the 3.0L Duramax a refined engine, but the total experience benefits from the efforts to deliver enhanced driving dynamics in Tahoe and Suburban through the independent rear suspension and available Magnetic Ride Control and Four-Corner Air Ride Adaptive Suspension.” The driver-selectable stop/start technology optimizes fuel economy by shutting off the engine at stoplights and certain other stop-and-go situations, helping to save fuel.

The 3.0L Duramax turbo-diesel is available on the LS, LT, RST, and Premier trims with an MSRP3 of $995 over the base 5.3L V-8 gas engine. It is also available in the High Country trim is a $1,500 MSRP decrease over the standard 6.2L V-8 gas engine. The first customer deliveries of the 2021 Tahoe and Suburban with the available 3.0L Duramax turbo-diesel are expected to begin before the end of the year.

For more industry news, truck features, and event coverage, stay tuned right here on Diesel Army.

About the author

Artie Maupin

Artie Maupin is from Southeast Missouri and has an extreme passion for anything diesel. He loves drag racing of all kinds, as well as sled pulling competitions.
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