GMC Sierra AT4 MPG by year — every rating on record
The GMC Sierra AT4 has a combined EPA fuel economy rating for 2 model years, from 2020 to 2021. Across those years its best rated version returned 24 mpg (2020) and its thirstiest returned 16 mpg (2020). The EPA record holds 13 configurations for this nameplate, most recently a Standard Pickup Trucks 4WD.
Year-by-year EPA ratings
| Model year | Configurations | Best combined | Worst combined | Class rank that year | Drivetrains | Fuel | EPA class |
|---|---|---|---|---|---|---|---|
| 2020 | 5 | 24 mpg | 16 mpg | #4 of 18 (82th pct) | 4-Wheel Drive | Regular, Premium, Diesel | Standard Pickup Trucks 4WD |
| 2021 | 8 | 24 mpg | 16 mpg | #4 of 22 (86th pct) | 4-Wheel Drive | Premium, Diesel, Regular | Standard Pickup Trucks 4WD |
Where it has stood in its class
Ranked against every other nameplate the EPA filed under the same class that year. The GMC Sierra AT4 placed highest in 2020 at #4 of 18, and lowest in 2020 at #4 of 18. It spent 2 of its 2 ranked years in the top half of its class.
Every configuration on record
All 13 configurations EPA lists for this nameplate, newest first.
| Year | Configuration | Engine detail | City | Highway | Combined | Gallons/yr | Barrels/yr | EPA fuel cost/yr | CO2 g/mi | GHG |
|---|---|---|---|---|---|---|---|---|---|---|
| 2021 | 5.3L 8-cyl 4-Wheel Drive Automatic 6-spd Regular | SIDI | 14 | 18 | 16 | 718.8 | 18.6 | $3,900 | 543 | 2/10 |
| 2021 | 5.3L 8-cyl 4-Wheel Drive Automatic 8-spd Regular | SIDI, start-stop | 14 | 20 | 16 | 718.8 | 18.6 | $3,900 | 551 | 2/10 |
| 2021 | 6.2L 8-cyl 4-Wheel Drive Automatic 10-spd Premium | SIDI | 14 | 19 | 16 | 718.8 | 18.6 | $4,850 | 555 | 2/10 |
| 2021 | 6.2L 8-cyl 4-Wheel Drive Automatic 10-spd Premium | SIDI; Stop-Start, start-stop | 15 | 19 | 17 | 676.5 | 17.5 | $4,550 | 522 | 3/10 |
| 2021 | 5.3L 8-cyl 4-Wheel Drive Automatic 10-spd Regular | SIDI | 15 | 21 | 17 | 676.5 | 17.5 | $3,650 | 523 | 3/10 |
| 2021 | 5.3L 8-cyl 4-Wheel Drive Automatic 10-spd Regular | SIDI, start-stop | 16 | 21 | 18 | 638.9 | 16.5 | $3,450 | 494 | 3/10 |
| 2021 | 5.3L 8-cyl 4-Wheel Drive Automatic 8-spd Regular | SIDI; with Cylinder Deactivation, start-stop | 16 | 21 | 18 | 638.9 | 16.5 | $3,450 | 484 | 3/10 |
| 2021 | 3.0L 6-cyl 4-Wheel Drive Automatic 10-spd Diesel | 3.0L 6-cyl, turbocharged, Diesel, start-stop | 22 | 26 | 24 | 479.2 | 14.9 | $3,750 | 430 | 4/10 |
| 2020 | 5.3L 8-cyl 4-Wheel Drive Automatic 6-spd Regular | SIDI | 14 | 18 | 16 | 718.8 | 18.6 | $3,900 | 556 | 2/10 |
| 2020 | 6.2L 8-cyl 4-Wheel Drive Automatic 10-spd Premium | SIDI, start-stop | 15 | 19 | 17 | 676.5 | 17.5 | $4,550 | 515 | 3/10 |
| 2020 | 5.3L 8-cyl 4-Wheel Drive Automatic 8-spd Regular | SIDI, start-stop | 16 | 21 | 18 | 638.9 | 16.5 | $3,450 | 486 | 3/10 |
| 2020 | 5.3L 8-cyl 4-Wheel Drive Automatic 10-spd Regular | SIDI, start-stop | 16 | 21 | 18 | 638.9 | 16.5 | $3,450 | 494 | 3/10 |
| 2020 | 3.0L 6-cyl 4-Wheel Drive Automatic 10-spd Diesel | 3.0L 6-cyl, turbocharged, Diesel, start-stop | 22 | 26 | 24 | 479.2 | 14.9 | $3,750 | 427 | 4/10 |
What Sierra AT4 fuel costs over a year
At the EPA's 11,500 miles a year, the 2021 GMC Sierra AT4 burns 479 to 719 gallons depending on configuration. Below is what that costs at three pump prices, and how much more the thirstiest configuration costs than the most efficient one.
| Pump price | Most efficient | Thirstiest | Spread |
|---|---|---|---|
| $3.00/gal | $1,438 | $2,156 | $719 |
| $3.50/gal | $1,677 | $2,516 | $839 |
| $4.00/gal | $1,917 | $2,875 | $958 |
EPA’s own estimate for the 2021 model year is $3,450 to $4,850 a year in fuel, or $11,500 more than the average new vehicle over five years.
How it compares with other Standard Pickup Trucks 4WD
Across the 90 nameplates EPA classifies as Standard Pickup Trucks 4WD, the median best combined rating is 19 mpg. At 24 mpg the GMC Sierra AT4 is 5 mpg better the median, which is worth about $441 a year at $3.50 a gallon.
- All Standard Pickup Trucks 4WD rankings — every nameplate in the class, best to worst.
Other GMC nameplates
Every GMC model compared → — all nameplates ranked by best combined rating, with what each one costs a year.