What is the fuel consumption of the 2026 GMC Sierra?
According to Natural Resources Canada, the most efficient configuration (Diesel) uses 9.3 L/100 km combined (10.1 city, 8.3 highway). The 7 rated configurations range from 9.3 to 14.6 L/100 km.
GMC
2026 GMC Sierra
7 NRCan-rated configurations of the 2026 GMC Sierra, 9.3 to 14.6 L/100 km combined.
- Combined
- 9.3 L/100 km
- City 10.1 · Hwy 8.3
- Drivetrain
- 4WD
Trims
Source: NRCan| Trim | Gas 2.7L 4 cyl | Diesel | Gas 5.3L 8 cyl | 4WD Gas 2.7L 4 cyl | 4WD Diesel | 4WD Gas 5.3L 8 cyl | 4WD Gas 6.2L 8 cyl |
|---|---|---|---|---|---|---|---|
| Powertrain | Gasoline | Diesel | Gasoline | Gasoline | Diesel | Gasoline | Gasoline |
| Transmission | Automatic (A8) | Automatic (A10) | Automatic (A10) | Automatic (A8) | Automatic (A10) | Automatic (A10) | Automatic (A10) |
| Drivetrain | — | — | — | 4x4 | 4x4 | 4x4 | 4x4 |
| City (NRCan) | 13.5 L/100 km | 10.1 L/100 km | 14.9 L/100 km | 14.2 L/100 km | 10.7 L/100 km | 15.9 L/100 km | 16 L/100 km |
| Highway (NRCan) | 11.3 L/100 km | 8.3 L/100 km | 12 L/100 km | 12.9 L/100 km | 9.3 L/100 km | 13 L/100 km | 12.1 L/100 km |
| Combined (NRCan) | 12.5 L/100 km | 9.3 L/100 km | 13.6 L/100 km | 13.6 L/100 km | 10.1 L/100 km | 14.6 L/100 km | 14.3 L/100 km |
| CO2 | 293 g/km | 250 g/km | 319 g/km | 319 g/km | 270 g/km | 341 g/km | 335 g/km |
| MSRP | Not published | Not published | Not published | Not published | Not published | Not published | Not published |
MSRP appears only once a published Canadian price has been checked.
Canadian price and payments
Sales tax by province| MSRP | — |
|---|---|
| Freight and PDI | $0 |
| Dealer fees | $0 |
| Before tax | — |
| HST (13 %) | — |
| Estimated total, Ontario | — |
Enter an MSRP to see the total: it is not published in our source data for this trim.
General sales tax rates. Some provinces use different rates for vehicles (for example higher BC PST tiers above $55,000). This is not a dealer quote.
Estimated monthly payment
—
Enter a price to calculate.
Estimate only. The 6.99% rate is an example; use your lender’s rate. Leases assume tax on each payment and exclude acquisition, excess-kilometre and end-of-lease fees. This is not a credit offer.
What will energy cost?
Based on your kilometres and pricesCheapest to run: Diesel, $3,252/yr · $16,258 over 5 years
Estimate from NRCan city and highway ratings, your split and your prices. Plug-in hybrids are calculated on gasoline unless comparison is on. Real-world use varies, especially in winter.
Canadian spec checklist
NRCan data4x4 for winter
Available · 4x4
Winter tires still matter most (mandatory in Quebec Dec. 1 to Mar. 15).
Combined fuel use (NRCan)
9.3–14.6 L/100 km
Source: Natural Resources Canada 2026 Fuel Consumption Guide open data, for every rated configuration.
Quick Specifications
City fuel economy10.1 L/100 km
Highway fuel economy8.3 L/100 km
Combined fuel economy9.3 L/100 km
Fuel economy
Natural Resources Canada rates the 2026 GMC Sierra at 9.3 to 14.6 L/100 km combined, depending on the configuration.
Safety recalls
Transport Canada2 safety recalls on file for the 2026 GMC Sierra.
PowertrainThis recall is for certain transfer case assemblies installed during production on certain new vehicles or sold as a replacement part.
Issue
This recall is for certain transfer case assemblies installed during production on certain new vehicles or sold as a replacement part.
On a small number of trucks, the transfer case assembly may not have been manufactured properly. As a result, the transfer case could fail and cause the front and/or rear wheels to lock up while driving.
Note: This recall only affects trucks equipped with four-wheel drive (4WD) or all-wheel drive (AWD). This recall affects transfer case part number 87842227.
Safety Risk
Front and/or rear wheels that lock suddenly could cause a loss of control and increase the risk of a crash.
Corrective Actions
To reduce the safety risk, General Motors advises you not to drive your truck until the recall repairs have been completed. General Motors will notify owners by mail and advise you to contact a dealership to arrange for an inspection and, if necessary, a transfer case assembly replacement.
Filed under Sierra · Official Transport Canada notice ↗
OtherThe owner's manual may be missing.
Issue
On certain vehicles, the owner's manual may be missing. As a result, the vehicles may not meet certain requirements of Canadian regulations.
Note: For the Escalade model, the recall also affects certain 2026 model year Escalade IQ and Escalade IQL models.
Safety Risk
A missing owner's manual could cause confusion on how to safely operate the vehicle and increase the risk of injury or a crash.
Corrective Actions
General Motors will notify owners by mail and advise you to take your vehicle to a dealership to install the owner's manual.
Filed under Sierra · Official Transport Canada notice ↗
Recalls Transport Canada has filed under this model name. A recall may cover only some versions or build dates, so check your VIN with the manufacturer or a dealer. Transport Canada says manufacturers almost always make these repairs free of charge. How to check your vehicle →
2026 GMC Sierra: frequently asked questions
Sources: NRCan, checked MSRPIs the 2026 GMC Sierra available with 4x4?
Yes. NRCan rates 4x4 configurations of the 2026 GMC Sierra.
Alerts and buying locally
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