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2021 Chevrolet Silverado 4WD TrailBoss — 5.3L 8-cyl, Automatic 6-spd, 4WD
This 2021 Chevrolet Silverado 4WD TrailBoss (5.3L 8-cyl, Automatic 6-spd, 4WD) takes regular (87-octane) gasoline. REGULAR
15
MPG combined (13 city / 18 hwy)
$4,150
est. fuel cost / year (EPA, 15k mi)
593 g/mi
tailpipe CO₂
Other 2021 Chevrolet Silverado 4WD TrailBoss trims
| Trim | Fuel | MPG | Fuel/yr |
|---|---|---|---|
| 5.3L 8-cyl, Automatic 10-spd, 4WD | REGULAR | 18 | $3,450 |
| 5.3L 8-cyl, Automatic 10-spd, 4WD | REGULAR | 17 | $3,650 |
| 5.3L 8-cyl, Automatic 6-spd, 4WD | REGULAR | 16 | $3,900 |
| 4.3L 6-cyl, Automatic 6-spd, 4WD | REGULAR | 16 | $3,900 |
| 6.2L 8-cyl, Automatic 10-spd, 4WD | PREMIUM | 17 | $4,550 |
| 6.2L 8-cyl, Automatic 10-spd, 4WD | PREMIUM | 17 | $4,550 |
| 6.2L 8-cyl, Automatic 10-spd, 4WD | PREMIUM | 16 | $4,800 |
EPA fuel type: Regular · class: Standard Pickup Trucks 4WD · retrieved 2026-06-14.