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Engine | Fuel Type | Transmission | Miles Per Gallon | City | Hwy |
| COBALT |
| 4 cyl., 2 L | Premium | Manual(M5) | 22 | 30 |
| 4 cyl., 2.2 L | Regular | Auto(L4) | 22 | 31 |
| 4 cyl., 2.2 L | Regular | Manual(M5) | 24 | 33 |
| 4 cyl., 2.4 L | Premium | Auto(L4) | 22 | 31 |
| 4 cyl., 2.4 L | Premium | Manual(M5) | 22 | 32 |
| COBALT XFE |
| 4 cyl., 2.2 L | Regular | Manual(M5) | 25 | 36 |
| COLORADO 2WD |
| 4 cyl., 2.9 L | Regular | Auto(L4) | 18 | 24 |
| 4 cyl., 2.9 L | Regular | Manual(M5) | 18 | 24 |
| 5 cyl., 3.7 L | Regular | Auto(L4) | 16 | 22 |
| COLORADO 4WD |
| 4 cyl., 2.9 L | Regular | Auto(L4) | 17 | 22 |
| 4 cyl., 2.9 L | Regular | Manual(M5) | 16 | 22 |
| 5 cyl., 3.7 L | Regular | Auto(L4) | 15 | 21 |
| COLORADO CAB CHASSIS INC 2WD |
| 5 cyl., 3.7 L | Regular | Auto(L4) | 14 | 18 |
| COLORADO CAB CHASSIS INC 4WD |
| 5 cyl., 3.7 L | Regular | Auto(L4) | 15 | 20 |
| COLORADO CREW CAB 2WD |
| 4 cyl., 2.9 L | Regular | Auto(L4) | 18 | 24 |
| 4 cyl., 2.9 L | Regular | Manual(M5) | 18 | 24 |
| 5 cyl., 3.7 L | Regular | Auto(L4) | 16 | 22 |
| COLORADO CREW CAB 4WD |
| 5 cyl., 3.7 L | Regular | Auto(L4) | 15 | 20 |
| CORVETTE |
| 8 cyl., 6.2 L | Premium | Auto(S6) | 15 | 25 |
| 8 cyl., 6.2 L | Premium | Manual(M6) | 16 | 26 |
| 8 cyl., 7 L | Premium | Manual(M6) | 15 | 24 |
| EQUINOX AWD |
| 6 cyl., 3.4 L | Regular | Auto(L5) | 17 | 24 |
| 6 cyl., 3.6 L | Regular | Auto(S6) | 16 | 24 |
| EQUINOX FWD |
| 6 cyl., 3.4 L | Regular | Auto(L5) | 17 | 24 |
| 6 cyl., 3.6 L | Regular | Auto(S6) | 16 | 24 |
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