2010 GMC Sierra K15

Truck Regular
GMC Sierra K15 2010
17MPG Combined
5 Trims
← 2009 2010 2011 →
Updated February 27, 2026

The 2010 GMC Sierra K15 Truck provides 14–17 combined MPG depending on trim. We’ve compiled EPA fuel economy data, NHTSA safety ratings, and recall history so you can make an informed decision.

2010 GMC Sierra K15 Specifications

SpecValue
Combined MPG14–17 combined MPG depending on trim
City MPG15
Highway MPG21
Body StyleTruck
Fuel TypeRegular
Drive4WD
Available Trims5

Available Trims

TrimMPG (City/Hwy/Combined)EngineTransmission
Auto14/18/154.3L 6cylAutomatic 4-spd
Auto13/18/154.8L 8cylAutomatic 4-spd
Auto15/21/175.3L 8cylAutomatic 6-spd
Auto12/19/146.2L 8cylAutomatic 6-spd
Auto12/19/146.2L 8cylAutomatic 6-spd

Annual Fuel Cost

Based on EPA estimates, the 2010 GMC Sierra K15 costs approximately $2,960 per year in fuel. This assumes 15,000 miles driven annually and current fuel prices.

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