NRCan fuel consumption ratings
2021 GMC Sierra — what a year of fuel costs
Official consumption ratings, your kilometres, your pump price. No sign-up, and every number is editable.
Your vehicle
Your driving
$4,247
2021 GMC Sierra · 13.7 L/100 km combined · 20,000 km a year in Ontario.
- Per month
- $354
- Fuel burned
- 2,740 L
- Tailpipe + grid CO₂
- 6,329 kg
All 32 rated versions
NRCan rates each engine and transmission separately. The figure above uses the median one, so a single halo trim cannot skew it.
| Version | Engine | Combined | Cost a year |
|---|---|---|---|
| Sierra | 2.7 L · A8 | 11.2 L/100 km | $3,472 |
| Sierra | 3 L · A10 | 9.1 L/100 km | $2,821 |
| Sierra | 4.3 L · A6 | 13.5 L/100 km | $4,185 |
| Sierra | 5.3 L · A6 | 13.8 L/100 km | $4,278 |
| Sierra | 5.3 L · A8 | 12.3 L/100 km | $3,813 |
| Sierra (Without AFM) | 5.3 L · A6 | 14.3 L/100 km | $4,433 |
| Sierra (Without DFM) | 5.3 L · A8 | 13.7 L/100 km | $4,247 |
| Sierra 4WD | 2.7 L · A8 | 12.3 L/100 km | $3,813 |
| Sierra 4WD | 3 L · A10 | 10 L/100 km | $3,100 |
| Sierra 4WD | 4.3 L · A6 | 14 L/100 km | $4,340 |
| Sierra 4WD | 5.3 L · A6 | 14.1 L/100 km | $4,371 |
| Sierra 4WD | 5.3 L · A8 | 13.3 L/100 km | $4,123 |
| Sierra 4WD | 5.3 L · A10 | 12.7 L/100 km | $3,937 |
| Sierra 4WD | 6.2 L · A10 | 13.5 L/100 km | $4,185 |
| Sierra 4WD (Without AFM) | 5.3 L · A6 | 14.8 L/100 km | $4,588 |
| Sierra 4WD (Without DFM) | 5.3 L · A8 | 14.8 L/100 km | $4,588 |
| Sierra 4WD (Without Stop-Start) | 5.3 L · A10 | 13.3 L/100 km | $4,123 |
| Sierra 4WD (Without Stop-Start) | 6.2 L · A10 | 14.3 L/100 km | $4,433 |
| Sierra 4WD AT4 | 3 L · A10 | 10 L/100 km | $3,100 |
| Sierra 4WD AT4 | 5.3 L · A6 | 15.1 L/100 km | $4,681 |
| Sierra 4WD AT4 | 5.3 L · A8 | 13.3 L/100 km | $4,123 |
| Sierra 4WD AT4 | 5.3 L · A10 | 13.1 L/100 km | $4,061 |
| Sierra 4WD AT4 | 6.2 L · A10 | 14.2 L/100 km | $4,402 |
| Sierra 4WD AT4 (Without DFM) | 5.3 L · A8 | 14.8 L/100 km | $4,588 |
| Sierra 4WD AT4 (Without Stop-Start) | 5.3 L · A10 | 13.7 L/100 km | $4,247 |
| Sierra 4WD AT4 (Without Stop-Start) | 6.2 L · A10 | 15 L/100 km | $4,650 |
| Sierra 4WD FFV | 5.3 L · A6 | 14.8 L/100 km | $4,588 |
| Sierra 4WD FFV | 5.3 L · A6 | 19.5 L/100 km | $6,045 |
| Sierra 4WD WT | 2.7 L · A8 | 12.6 L/100 km | $3,906 |
| Sierra FFV | 5.3 L · A6 | 14.5 L/100 km | $4,495 |
| Sierra FFV | 5.3 L · A6 | 19 L/100 km | $5,890 |
| Sierra WT | 2.7 L · A8 | 11.2 L/100 km | $3,472 |
Watch this vehicle
Recall letters go to whoever owns the car on paper, which may not be you. Save your 2021 GMC Sierra and we will email you the day Transport Canada issues a new recall for it.
Source: NRCan — Fuel consumption ratings; Provincial price table. Data current as of 2026-08-10. Consumption figures are NRCan’s published ratings. Prices are annual provincial averages, hand-maintained and marked as estimates — Hand-maintained annual averages, not a live feed. Electricity is all-in residential (energy + delivery + regulatory riders); gasoline is regular grade. Override them with your own numbers in any tool.