2016 GMC Sierra K15

Truck Flex Fuel
GMC Sierra K15 2016
19MPG Combined
5 Trims
← 2015 2016 2017 →
Updated February 27, 2026

The 2016 GMC Sierra K15 is a Truck that delivers 17–19 combined MPG depending on trim. Here’s everything you need to know about this vehicle, from fuel economy to safety ratings.

2016 GMC Sierra K15 Specifications

SpecValue
Combined MPG17–19 combined MPG depending on trim
City MPG17
Highway MPG22
Body StyleTruck
Fuel TypeFlex Fuel
Drive4WD
Available Trims5

Available Trims

TrimMPG (City/Hwy/Combined)EngineTransmission
Auto16/22/185.3L 8cylAutomatic 6-spd
Auto17/22/194.3L 6cylAutomatic 6-spd
Auto15/21/175.3L 8cylAutomatic 8-spd
Auto16/22/185.3L 8cylAutomatic 6-spd
Auto15/21/176.2L 8cylAutomatic 8-spd

Annual Fuel Cost

Based on EPA estimates, the 2016 GMC Sierra K15 costs approximately $2,480 per year in fuel. This assumes 15,000 miles driven annually and current fuel prices.

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