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2018 GMC Sierra C15 Cab Chassis 2WD vs 2018 GMC Sierra K15 Cab Chassis 4WD

EPA figure2018 GMC Sierra C15 Cab Chassis 2WD2018 GMC Sierra K15 Cab Chassis 4WD
Model year20182018
Body · driveSpecial purpose · Rear-Wheel Drive · GasSpecial purpose · 4-Wheel Drive · Gas
Combined MPG1717
City / highway MPG15 / 2015 / 19
Fuel a year$3,950$3,950
Tailpipe CO₂ (g/mi)523523
Engine5.3 L 8-cyl5.3 L 8-cyl
TransmissionAutomatic 6-spdAutomatic 6-spd

▲ marks the better official figure on that line: more range, MPG or MPGe; less fuel cost or CO₂. From fueleconomy.gov.