2012 GMC Sierra fuel economy
The EPA lists 12 versions of the 2012 GMC Sierra. Combined fuel economy ranges from 14 to 21 MPG; the most efficient version is rated 20 city / 23 highway.
At a glance
- Combined
- 14 to 21 MPG depending on version
- City and highway
- 20 and 23 most efficient version
- Yearly fuel cost
- $3,200 EPA estimate, most efficient version
Source: U.S. EPA fueleconomy.gov
Every version the EPA tested
| Version | Engine | Drive | City | Highway | Combined | Yearly fuel cost |
|---|---|---|---|---|---|---|
| Sierra 15 Hybrid 2WD Automatic (variable gear ratios) | 8-cyl 6.0L Hybrid | Rear-Wheel Drive | 20 | 23 | 21 MPG | $3,200 |
| Sierra 15 Hybrid 4WD Automatic (variable gear ratios) | 8-cyl 6.0L Hybrid | 4-Wheel Drive | 20 | 23 | 21 MPG | $3,200 |
| Sierra C15 XFE 2WD Automatic 6-spd | 8-cyl 5.3L FFV | Rear-Wheel Drive | 15 | 22 | 18 MPG | $3,700 |
| Sierra C15 2WD Automatic 6-spd | 8-cyl 5.3L FFV | Rear-Wheel Drive | 15 | 21 | 17 MPG | $3,950 |
| Sierra C15 2WD Automatic 4-spd | 6-cyl 4.3L | Rear-Wheel Drive | 15 | 20 | 17 MPG | $3,950 |
| Sierra K15 4WD Automatic 6-spd | 8-cyl 5.3L FFV | 4-Wheel Drive | 15 | 21 | 17 MPG | $3,950 |
| Sierra C15 2WD Automatic 4-spd | 8-cyl 4.8L FFV | Rear-Wheel Drive | 14 | 19 | 16 MPG | $4,200 |
| Sierra K15 4WD Automatic 4-spd | 6-cyl 4.3L | 4-Wheel Drive | 14 | 18 | 16 MPG | $4,200 |
| Sierra K15 4WD Automatic 4-spd | 8-cyl 4.8L FFV | 4-Wheel Drive | 13 | 18 | 15 MPG | $4,450 |
| Sierra C15 2WD Automatic 6-spd | 8-cyl 6.2L FFV | Rear-Wheel Drive | 13 | 18 | 14 MPG | $4,800 |
| Sierra K15 4WD Automatic 6-spd | 8-cyl 6.2L FFV | 4-Wheel Drive | 12 | 18 | 14 MPG | $4,800 |
| Sierra K15 AWD Automatic 6-spd | 8-cyl 6.2L FFV | 4-Wheel Drive | 12 | 18 | 14 MPG | $4,800 |
At EPA assumptions, the most efficient version costs about $3,200 per year in fuel, versus $4,800 for the least efficient.