GMC ยท 2018
2018 GMC Sierra C15 2WD
Official EPA fuel economy and NHTSA recall record, best combined figure 20 MPG.
Fuel economy (EPA)
| Engine | Transmission | Fuel | City | Highway | Combined | CO2 g/mi |
|---|---|---|---|---|---|---|
| 4.3L 6-cyl | Automatic 6-spd | Gasoline or E85 | 18 | 24 | 20 | 448 |
| 5.3L 8-cyl | Automatic 8-spd | Regular | 16 | 22 | 18 | 495 |
| 5.3L 8-cyl | Automatic 6-spd | Regular | 16 | 23 | 19 | 475 |
| 5.3L 8-cyl | Automatic 6-spd | Gasoline or E85 | 16 | 23 | 19 | 475 |
| 6.2L 8-cyl | Automatic 8-spd | Premium | 15 | 21 | 17 | 517 |
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 2018 GMC Sierra C15 2WD?
EPA figures for the 2018 GMC Sierra C15 2WD reach 20 MPG combined depending on configuration; the table on this page lists every tested engine and transmission combination.
Are there recalls on the 2018 GMC Sierra C15 2WD?
No NHTSA recall campaigns are on record for the 2018 GMC Sierra C15 2WD 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.