What is the fuel economy of a 2021 GMC Sierra 4WD AT4?

EPA figures for the 2021 GMC Sierra 4WD AT4 reach 24 MPG combined depending on configuration; the table on this page lists every tested engine and transmission combination.

Are there recalls on the 2021 GMC Sierra 4WD AT4?

No NHTSA recall campaigns are on record for the 2021 GMC Sierra 4WD AT4 in our latest data refresh.

GMC · 2021

2021 GMC Sierra 4WD AT4

Official EPA fuel economy and NHTSA recall record, best combined figure 24 MPG.

Fuel economy (EPA)

Engine	Transmission	Fuel	City	Highway	Combined	CO2 g/mi
6.2L 8-cyl	Automatic 10-spd	Premium	15	19	17	522
3.0L 6-cyl	Automatic 10-spd	Diesel	22	26	24	430
5.3L 8-cyl	Automatic 10-spd	Regular	16	21	18	494
5.3L 8-cyl	Automatic 8-spd	Regular	16	21	18	484
5.3L 8-cyl	Automatic 6-spd	Regular	14	18	16	543
5.3L 8-cyl	Automatic 8-spd	Regular	14	20	16	551
6.2L 8-cyl	Automatic 10-spd	Premium	14	19	16	555
5.3L 8-cyl	Automatic 10-spd	Regular	15	21	17	523

Safety recalls (NHTSA)

No NHTSA recall campaigns on record for this model year in our latest refresh.

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Sources: EPA fueleconomy.gov, the NHTSA recalls, complaints and 5-Star Safety Ratings databases (all US public data), refreshed monthly. Recall texts are quoted from the official record. Details on About & Data Sources.