GMC Sierra Diesel

Gas Model: Sierra Diesel Pickup 2026

Base trim: AT4 US$68,300 excl. tax Checked . Source for United States MSRP, excludes taxes, excludes destination charge, excludes title, license and registration fees

No price listed for Canada yet.

No price listed for United Kingdom yet.

No price listed for Australia yet.

No price listed for Germany yet.

No price listed for Netherlands yet.

No price listed for Norway yet.

No price listed for France yet.

No price listed for Spain yet.

No price listed for Italy yet.

No price listed for Belgium yet.

No price listed for Austria yet.

No price listed for Ireland yet.

No price listed for Sweden yet.

No price listed for Denmark yet.

No price listed for Switzerland yet.

Power
227 kW (305 hp)
Fuel use
24 mpg9.8 L/100 km (EPA)28.8 mpg (EPA)
Seats
5
Drivetrain
AWD
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Model preview

AI-generated illustration of the GMC Sierra, seen from the front.

Illustration of the GMC Sierra, generated with AI. It is not a photo: the details, colour and trim of the real car differ.

Our take on the GMC Sierra Diesel

The GMC Sierra Diesel is a diesel F-segment pickup. Its base trim is AT4.

Cons

  • Starting price in United States (tax excluded) is 56% above the median of 6 F-segment pickups.

Reviewed 11 Oct 2026.

Prices by country

List prices are shown as published in each market, in the market's own currency. Some include VAT or sales tax and some do not (see the tax flag). Nothing is adjusted.

  • United States

    US$68,300 excl. tax

    Checked . Source for United States

    MSRP, excludes taxes, excludes destination charge, excludes title, license and registration fees

Versions

The Sierra comes in 2 versions; prices are the list prices of each version in your market.

  • AT4

    Base version
    Drivetrain
    AWD
    Power
    227 kW (305 hp)
    Fuel use
    24 mpg9.8 L/100 km (EPA)28.8 mpg (EPA)

    US$68,300 excl. tax

    Source for AT4, United States

    No price listed for Canada

    No price listed for United Kingdom

    No price listed for Australia

    No price listed for Germany

    No price listed for Netherlands

    No price listed for Norway

    No price listed for France

    No price listed for Spain

    No price listed for Italy

    No price listed for Belgium

    No price listed for Austria

    No price listed for Ireland

    No price listed for Sweden

    No price listed for Denmark

    No price listed for Switzerland

  • AT4X

    Drivetrain
    AWD
    Power
    227 kW (305 hp)
    Fuel use
    19 mpg12.4 L/100 km (EPA)22.8 mpg (EPA)

    US$79,900 excl. tax

    Source for AT4X, United States

    No price listed for Canada

    No price listed for United Kingdom

    No price listed for Australia

    No price listed for Germany

    No price listed for Netherlands

    No price listed for Norway

    No price listed for France

    No price listed for Spain

    No price listed for Italy

    No price listed for Belgium

    No price listed for Austria

    No price listed for Ireland

    No price listed for Sweden

    No price listed for Denmark

    No price listed for Switzerland

Energy cost

What the energy for 100 km (100 mi where the market uses miles) costs at the market's latest published national energy price, in the market's own currency. Nothing is converted.

US$26.15per 100 mi Diesel at US$6.276 per US gallon, incl. tax, for 19 Oct 2026. EPA consumption. EIA Weekly Retail Gasoline and Diesel Prices for United States diesel price
CA$25.59per 100 km Diesel at CA$2.611 per litre, incl. tax, for 13 Oct 2026. EPA consumption. Natural Resources Canada, average retail fuel prices for Canada diesel price
£31.55per 100 mi Diesel at £2.00 per litre, incl. tax, for 12 Oct 2026. EPA consumption. UK DESNZ weekly road fuel prices for United Kingdom diesel price
A$27.73per 100 km Diesel at A$2.83 per litre, incl. tax, for 5 Oct 2026 to 11 Oct 2026. EPA consumption. Australian Institute of Petroleum weekly reports for Australia diesel price
€22.21per 100 km Diesel at €2.266 per litre, incl. tax, for 19 Oct 2026. EPA consumption. EU Weekly Oil Bulletin for Germany diesel price
€24.07per 100 km Diesel at €2.456 per litre, incl. tax, for 19 Oct 2026. EPA consumption. EU Weekly Oil Bulletin for Netherlands diesel price
NOK 210.50per 100 km Diesel at NOK 21.48 per litre, incl. tax, for 1 Aug 2026 to 31 Aug 2026. EPA consumption. Statistics Norway fuel prices (table 09654) for Norway diesel price
€22.99per 100 km Diesel at €2.346 per litre, incl. tax, for 19 Oct 2026. EPA consumption. EU Weekly Oil Bulletin for France diesel price
€18.51per 100 km Diesel at €1.889 per litre, incl. tax, for 19 Oct 2026. EPA consumption. EU Weekly Oil Bulletin for Spain diesel price
€22.00per 100 km Diesel at €2.244 per litre, incl. tax, for 19 Oct 2026. EPA consumption. EU Weekly Oil Bulletin for Italy diesel price
€23.04per 100 km Diesel at €2.351 per litre, incl. tax, for 19 Oct 2026. EPA consumption. EU Weekly Oil Bulletin for Belgium diesel price
€20.89per 100 km Diesel at €2.132 per litre, incl. tax, for 19 Oct 2026. EPA consumption. EU Weekly Oil Bulletin for Austria diesel price
€20.94per 100 km Diesel at €2.137 per litre, incl. tax, for 19 Oct 2026. EPA consumption. EU Weekly Oil Bulletin for Ireland diesel price
SEK 231.18per 100 km Diesel at SEK 23.59 per litre, incl. tax, for 26 Oct 2026. EPA consumption. Preem AB list prices for business customers (Företagskort) for Sweden diesel price
DKK 175.13per 100 km Diesel at DKK 17.87 per litre, incl. tax, for 1 May 2026 to 31 May 2026. EPA consumption. Energistyrelsen Prisdatabase (monthly energy prices, Blyfri 95 and Autodiesel) for Denmark diesel price
CHF 22.25per 100 km Diesel at CHF 2.27 per litre, incl. tax, for 1 Sep 2026 to 30 Sep 2026. EPA consumption. BFS LIK Durchschnittspreise für Energie und Treibstoffe (monthly) for Switzerland diesel price

Work out your own costs

Distance, energy price, insurance: see what the GMC Sierra Diesel costs you over five years.

Specifications

Dimensions
Length
5,916 mm (232.9 in)
Width
2,063 mm (81.2 in)
Height
1,990 mm (78.3 in)
Wheelbase
3,748 mm (147.6 in)
Side view size comparison of GMC Sierra Diesel 5,916 mm (232.9 in) 1,990 mm (78.3 in) 2,063 mm (81.2 in) Side view size comparison of GMC Sierra Diesel 5,916 mm (232.9 in) 1,990 mm (78.3 in) 2,063 mm (81.2 in)
GMC Sierra Diesel is 5,916 mm (232.9 in) long and 1,990 mm (78.3 in) high, with a wheelbase of 3,748 mm (147.6 in). The outlines are generic body shapes drawn at one scale, not the real design of any model.
Performance
Power
227 kW (305 hp)
Torque
671 Nm495 lb-ft (671 Nm)
Engine and fuel
Fuel use
24 mpg9.8 L/100 km (EPA)28.8 mpg (EPA)
Fuel tank
90.8 L
Engine size
3,000 cc
Practicality
Seats
5

Specifications: US manufacturers official sites, checked .

Source detailsgmc.com/shopping/configurator/truck/2026/sierra-1500/sierra-1500/compare; eog-api.musea2.azure.ext.gm.com/api/PullDown/23160/dimensions/en-us; gmc.com/content/experience-fragments/gmc/na/us/en/index/vehicles/2026/trucks/my26_sierra_1500/overview/modals/3-0l/master.html. Read: length=232.90in, width=81.24in, height=78.35in, wheelbase=147.5591in, seats=5, power=305hp, epa_combined_mpg=24mpg. Factors: 25.4 mm/in, 0.45359237 kg/lb, 0.7457 kW/hp, 235.215/mpg, 1.609344 km/mi.

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    Fuel use
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    CA$96,842 excl. tax

    No price listed for United Kingdom yet.

    No price listed for Australia yet.

    No price listed for Germany yet.

    No price listed for Netherlands yet.

    No price listed for Norway yet.

    No price listed for France yet.

    No price listed for Spain yet.

    No price listed for Italy yet.

    No price listed for Belgium yet.

    No price listed for Austria yet.

    No price listed for Ireland yet.

    No price listed for Sweden yet.

    No price listed for Denmark yet.

    No price listed for Switzerland yet.

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    No price listed for United Kingdom yet.

    No price listed for Australia yet.

    No price listed for Germany yet.

    No price listed for Netherlands yet.

    No price listed for Norway yet.

    No price listed for France yet.

    No price listed for Spain yet.

    No price listed for Italy yet.

    No price listed for Belgium yet.

    No price listed for Austria yet.

    No price listed for Ireland yet.

    No price listed for Sweden yet.

    No price listed for Denmark yet.

    No price listed for Switzerland yet.

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    No price listed for United Kingdom yet.

    No price listed for Australia yet.

    No price listed for Germany yet.

    No price listed for Netherlands yet.

    No price listed for Norway yet.

    No price listed for France yet.

    No price listed for Spain yet.

    No price listed for Italy yet.

    No price listed for Belgium yet.

    No price listed for Austria yet.

    No price listed for Ireland yet.

    No price listed for Sweden yet.

    No price listed for Denmark yet.

    No price listed for Switzerland yet.

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    No price listed for United Kingdom yet.

    No price listed for Australia yet.

    No price listed for Germany yet.

    No price listed for Netherlands yet.

    No price listed for Norway yet.

    No price listed for France yet.

    No price listed for Spain yet.

    No price listed for Italy yet.

    No price listed for Belgium yet.

    No price listed for Austria yet.

    No price listed for Ireland yet.

    No price listed for Sweden yet.

    No price listed for Denmark yet.

    No price listed for Switzerland yet.

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    No price listed for United States yet.

    No price listed for Canada yet.

    No price listed for Australia yet.

    No price listed for Spain yet.

    No price listed for Italy yet.

    No price listed for Belgium yet.

    No price listed for Austria yet.

    No price listed for Ireland yet.

    No price listed for Sweden yet.

    No price listed for Denmark yet.

    No price listed for Switzerland yet.

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    No price listed for Australia yet.

    No price listed for Spain yet.

    No price listed for Italy yet.

    No price listed for Belgium yet.

    No price listed for Austria yet.

    No price listed for Ireland yet.

    No price listed for Sweden yet.

    No price listed for Switzerland yet.

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