GMC
Sierra C15 2WD

U.S. fuel economy and specifications from the EPA.

GMC Sierra 1500 full-size pickup as sold in the 2020s
20Best combined MPG2014 model year
2007–2018Model years12 with EPA ratings
58Rated configurationsDrive, transmission and engine
4.3–6.2 LEngine sizeDisplacement

Best combined MPG by model year

The highest EPA rating among each year's configurations.

2007 17 MPG
2008 17 MPG
2009 17 MPG
2010 17 MPG
2011 17 MPG
2012 17 MPG
2013 17 MPG
2014 20 MPG
2015 20 MPG
2016 20 MPG
2017 20 MPG
2018 20 MPG

5 configurations.

Rear-Wheel Drive · Automatic 6-spd

Regular gasoline or E85 · Standard Pickup Trucks 2WD

Combined MPG on regular gasoline
20
Combined MPG on E85
14
Engine displacement
4.3 L
Cylinders
6
EPA listing for this configuration: 2018, Rear-Wheel Drive, Automatic 6-spd, 4.3 L, Gasoline or E85

Rear-Wheel Drive · Automatic 8-spd

Regular gasoline · Standard Pickup Trucks 2WD

Combined MPG
18
Engine displacement
5.3 L
Cylinders
8
EPA listing for this configuration: 2018, Rear-Wheel Drive, Automatic 8-spd, 5.3 L, Regular

Rear-Wheel Drive · Automatic 6-spd

Regular gasoline · Standard Pickup Trucks 2WD

Combined MPG
19
Engine displacement
5.3 L
Cylinders
8
EPA listing for this configuration: 2018, Rear-Wheel Drive, Automatic 6-spd, 5.3 L, Regular

Rear-Wheel Drive · Automatic 6-spd

Regular gasoline or E85 · Standard Pickup Trucks 2WD

Combined MPG on regular gasoline
19
Combined MPG on E85
14
Engine displacement
5.3 L
Cylinders
8
EPA listing for this configuration: 2018, Rear-Wheel Drive, Automatic 6-spd, 5.3 L, Gasoline or E85

Rear-Wheel Drive · Automatic 8-spd

Premium gasoline · Standard Pickup Trucks 2WD

Combined MPG
17
Engine displacement
6.2 L
Cylinders
8
EPA listing for this configuration: 2018, Rear-Wheel Drive, Automatic 8-spd, 6.2 L, Premium

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