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NRCan fuel consumption ratings

2021 GMC Sierra HD — what a year of fuel costs

Official consumption ratings, your kilometres, your pump price. No sign-up, and every number is editable.

Your vehicle

It is on your insurance slip, your registration, and the driver-side dashboard.

Your driving

Pre-filled with the last Canadian average Statistics Canada published: 16,249 km, for 2009. Change it to your own.
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¢ / L
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Fuel for a year

$3,450

2021 GMC Sierra HD · 13.7 L/100 km combined · 16,249 km a year in Ontario.

Per month
$288
Fuel burned
2,226 L
Tailpipe + grid CO₂
5,142 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.

Every rated version of the 2021 GMC Sierra HD and its annual cost.
VersionEngineCombinedCost a year
Sierra2.7 L · A811.2 L/100 km$2,821
Sierra3 L · A109.1 L/100 km$2,292
Sierra4.3 L · A613.5 L/100 km$3,400
Sierra5.3 L · A613.8 L/100 km$3,476
Sierra5.3 L · A812.3 L/100 km$3,098
Sierra (Without AFM)5.3 L · A614.3 L/100 km$3,602
Sierra (Without DFM)5.3 L · A813.7 L/100 km$3,450
Sierra 4WD2.7 L · A812.3 L/100 km$3,098
Sierra 4WD3 L · A1010 L/100 km$2,519
Sierra 4WD4.3 L · A614 L/100 km$3,526
Sierra 4WD5.3 L · A614.1 L/100 km$3,551
Sierra 4WD5.3 L · A813.3 L/100 km$3,350
Sierra 4WD5.3 L · A1012.7 L/100 km$3,199
Sierra 4WD6.2 L · A1013.5 L/100 km$3,400
Sierra 4WD (Without AFM)5.3 L · A614.8 L/100 km$3,728
Sierra 4WD (Without DFM)5.3 L · A814.8 L/100 km$3,728
Sierra 4WD (Without Stop-Start)5.3 L · A1013.3 L/100 km$3,350
Sierra 4WD (Without Stop-Start)6.2 L · A1014.3 L/100 km$3,602
Sierra 4WD AT43 L · A1010 L/100 km$2,519
Sierra 4WD AT45.3 L · A615.1 L/100 km$3,803
Sierra 4WD AT45.3 L · A813.3 L/100 km$3,350
Sierra 4WD AT45.3 L · A1013.1 L/100 km$3,299
Sierra 4WD AT46.2 L · A1014.2 L/100 km$3,576
Sierra 4WD AT4 (Without DFM)5.3 L · A814.8 L/100 km$3,728
Sierra 4WD AT4 (Without Stop-Start)5.3 L · A1013.7 L/100 km$3,450
Sierra 4WD AT4 (Without Stop-Start)6.2 L · A1015 L/100 km$3,778
Sierra 4WD FFV5.3 L · A614.8 L/100 km$3,728
Sierra 4WD FFV5.3 L · A619.5 L/100 km$4,911
Sierra 4WD WT2.7 L · A812.6 L/100 km$3,173
Sierra FFV5.3 L · A614.5 L/100 km$3,652
Sierra FFV5.3 L · A619 L/100 km$4,785
Sierra WT2.7 L · A811.2 L/100 km$2,821

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Source: NRCan — Fuel consumption ratings; StatCan 18-10-0001-01 — monthly retail fuel prices by city. Data current as of 2026-08-12. 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. Grid intensities are CER’s 2022 figures, one citation per jurisdiction.