GMC ยท 2020
2020 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 |
|---|---|---|---|---|---|---|
| 5.3L 8-cyl | Automatic 8-spd | Regular | 16 | 21 | 18 | 486 |
| 5.3L 8-cyl | Automatic 10-spd | Regular | 16 | 21 | 18 | 494 |
| 6.2L 8-cyl | Automatic 10-spd | Premium | 15 | 19 | 17 | 515 |
| 5.3L 8-cyl | Automatic 6-spd | Regular | 14 | 18 | 16 | 556 |
| 3.0L 6-cyl | Automatic 10-spd | Diesel | 22 | 26 | 24 | 427 |
Safety recalls (NHTSA)
No NHTSA recall campaigns on record for this model year in our latest refresh.
Frequently Asked Questions
What is the fuel economy of a 2020 GMC Sierra 4WD AT4?
EPA figures for the 2020 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 2020 GMC Sierra 4WD AT4?
No NHTSA recall campaigns are on record for the 2020 GMC Sierra 4WD AT4 in our latest data refresh.
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.