Average MPG of Duramax Diesel Engines (Top 5 Chevy & GMC Trucks)

The Duramax diesel engine is predominately found in GMC trucks. It was introduced in 2001 and has gone through many updates. The current version (2017+) is a 6.6L turbo-diesel V8 which has some of the best torque and horsepower you could ever want in a diesel engine.

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There is also a smaller 2.8 liter version of the Duramax diesel turbo-diesel engine that can be found on 2016+ Chevy Colorado and GMC Canyon midsize pickups.

Rather than the 910 pound-foot of torque found with the 6.6L engine, the 2.8L 4-Cylinder Turbodiesel offers 369 pound-foot of torque. However, both give users great gas mileage as well as the power you would expect from a diesel engine.

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Duramax engine fuel economyDuramax engine fuel economy

Table of Contents

Duramax MPG for 5 Most Common Trucks

When people shop around for trucks of any size, in addition to torque and towing capacity, they likely want to know the miles per gallon that they’ll get out of it. Duramax diesel engines are made to enhance fuel efficiency so that you get the most miles per gallon out of your truck that is possible.

Below are 5 common vehicles which have a Duramax diesel engine in them. Because manufacturer based MPG numbers are usually unrealistic, the fuel mileages shown below are taken from hundreds of actual owners of the vehicles themselves, millions of miles driven, and actually putting the trucks through typical days of work (courtesy of Fuelly.com).

Note: Obviously, the actual fuel economy achieved is based on many factors (speed, driving style, weight, towing, etc.) so your results may vary but this should give you a good idea of “real-world” usage.

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#1 – Chevrolet Silverado 2500HD

Chevy Silverado 2500HD Duramax DieselChevy Silverado 2500HD Duramax Diesel

Year Average Miles Per Gallon Year Average Miles Per Gallon
2001 15.4 MPG 2002 15.0 MPG
2003 14.9 MPG 2004 14.3 MPG
2005 13.9 MPG 2006 14.3 MPG
2007 14.6 MPG 2008 14.5 MPG
2009 13.4 MPG 2010 14.7 MPG
2011 13.7 MPG 2012 13.3 MPG
2013 14.9 MPG 2014 14.3 MPG
2015 14.2 MPG 2016 14.3 MPG
2017 14.3 MPG 2018 13.8 MPG
2019 14.5 MPG 2020 13.1 MPG

#2 – GMC Sierra 2500HD

GMC Sierra 2500HD Duramax DieselGMC Sierra 2500HD Duramax Diesel

Year Average Miles Per Gallon Year Average Miles Per Gallon
2001 14.2 MPG 2002 15.0 MPG
2003 15.2 MPG 2004 15.5 MPG
2005 13.6 MPG 2006 14.7 MPG
2007 14.3 MPG 2008 14.4 MPG
2009 14.6 MPG 2010 15.0 MPG
2011 13.9 MPG 2012 13.7 MPG
2013 13.4 MPG 2014 13.7 MPG
2015 13.9 MPG 2016 14.4 MPG
2017 14.2 MPG 2018 15.3 MPG
2019 14.4 MPG 2020 14.9 MPG

#3 – GMC Sierra 3500HD

GMC Sierra 3500HD Duramax DieselGMC Sierra 3500HD Duramax Diesel

Year Average Miles Per Gallon Year Average Miles Per Gallon
2007 13.6 MPG 2008 13.3 MPG
2009 15.1 MPG 2010 13.2 MPG
2011 13.7 MPG 2012 13.3 MPG
2013 12.5 MPG 2014 12.2 MPG
2015 14.3 MPG 2016 12.6 MPG
2017 13.3 MPG 2018 11.8 MPG
2019 11.2 MPG 2020 13.8 MPG

#4 – Chevrolet Colorado

Chevy Colorado Duramax DieselChevy Colorado Duramax Diesel

Year Average Miles Per Gallon Year Average Miles Per Gallon
2016 23.8 MPG 2017 23.6 MPG
2018 22.7 MPG 2019 22.3 MPG
2020 20.1 MPG

#5 – GMC Canyon

GMC Canyon Duramax DieselGMC Canyon Duramax Diesel

Year Average Miles Per Gallon Year Average Miles Per Gallon
2016 24.0 MPG 2017 24.3 MPG
2018 24.8 MPG 2019 22.0 MPG
2020 24.5 MPG

General Motors owns the brand and rights to the Duramax diesel engine. The company currently has a joint venture with the Japanese motor company called Isuzu. This joint venture is referred to as DMAX, which is the manufacturer of Duramax diesel engines.

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The engine became popular after they were first installed in the 2001 GMC and Chevrolet trucks. Ever since then, GMC has given people the option to have a Duramax diesel engine in all the medium-sized trucks, vans, and pickup trucks that they sell. If you come across this option, be sure to take it.

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