GMC Sierra Diesel vs Toyota Tundra

Key differences

  • GMC Sierra Diesel is 17 mm (0.7 in) shorter than Toyota Tundra.
  • Toyota Tundra makes 32 kW (43 hp) more power than GMC Sierra Diesel.
  • Toyota Tundra costs US$27,040 less than GMC Sierra Diesel (list prices, excl. tax).
Gas

GMC Sierra Diesel

Pickup · 2026 · Diesel

US$68,300 excl. tax

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.

Full specifications of GMC Sierra Diesel
Gas

Toyota Tundra

Pickup · 2026 · ICE

US$41,260 excl. tax

CA$54,440 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.

Full specifications of Toyota Tundra

Size comparison

Side view size comparison of GMC Sierra Diesel and Toyota Tundra
  • Toyota Tundra is 17 mm (0.7 in) longer than GMC Sierra Diesel.
  • Toyota Tundra is 9 mm (0.4 in) lower than GMC Sierra Diesel.
  • Toyota Tundra has a wheelbase 47 mm (1.9 in) shorter than GMC Sierra Diesel.
Blue solid line: GMC Sierra Diesel; orange dashed line: Toyota Tundra. The outlines are generic body shapes drawn at one scale, not the real design of any model.

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). Toyota Tundra is 5,933 mm (233.6 in) long and 1,981 mm (78 in) high, with a wheelbase of 3,701 mm (145.7 in).

Front view size comparison of GMC Sierra Diesel and Toyota Tundra
  • Toyota Tundra is 26 mm (1 in) narrower than GMC Sierra Diesel.
Blue solid line: GMC Sierra Diesel; orange dashed line: Toyota Tundra.

GMC Sierra Diesel is 2,063 mm (81.2 in) wide and 1,990 mm (78.3 in) high. Toyota Tundra is 2,037 mm (80.2 in) wide and 1,981 mm (78 in) high.

Rear view size comparison of GMC Sierra Diesel and Toyota Tundra
Blue solid line: GMC Sierra Diesel; orange dashed line: Toyota Tundra.

GMC Sierra Diesel is 2,063 mm (81.2 in) wide and 1,990 mm (78.3 in) high. Toyota Tundra is 2,037 mm (80.2 in) wide and 1,981 mm (78 in) high.

Compare specifications

A check mark shows the better value in a row. Range and efficiency check marks compare only values from the same test cycle. Prices are each market's own list prices, compared within that market; some include tax and some do not, and no price is marked better when the tax treatment differs. Energy cost is what the energy for 100 km (100 mi where the market uses miles) costs at the market's latest published national energy price, in its own currency, with the price's source and date.

Specification comparison
Specification GMC Sierra Diesel Toyota Tundra
Price
Base priceUnited States US$68,300excl. taxChecked . Source for United States, GMC Sierra DieselUS$41,260Better value on this metricexcl. taxChecked . Source for United States, Toyota Tundra
Base priceCanada Not listed CA$54,440excl. taxChecked . Source for Canada, Toyota Tundra
Base priceUnited Kingdom Neither car has a price listed for United Kingdom yet.
Base priceAustralia Neither car has a price listed for Australia yet.
Base priceGermany Neither car has a price listed for Germany yet.
Base priceNetherlands Neither car has a price listed for Netherlands yet.
Base priceNorway Neither car has a price listed for Norway yet.
Base priceFrance Neither car has a price listed for France yet.
Base priceSpain Neither car has a price listed for Spain yet.
Base priceItaly Neither car has a price listed for Italy yet.
Base priceBelgium Neither car has a price listed for Belgium yet.
Base priceAustria Neither car has a price listed for Austria yet.
Base priceIreland Neither car has a price listed for Ireland yet.
Base priceSweden Neither car has a price listed for Sweden yet.
Base priceDenmark Neither car has a price listed for Denmark yet.
Base priceSwitzerland Neither car has a price listed for Switzerland yet.
Energy cost
Energy cost per 100 miUnited States 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 US$21.49per 100 mi Gasoline at US$4.284 per US gallon, incl. tax, for 19 Oct 2026. EPA consumption. EIA Weekly Retail Gasoline and Diesel Prices for United States gasoline price Better value on this metric
Energy cost per 100 kmCanada 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 CA$20.51per 100 km Petrol at CA$1.738 per litre, incl. tax, for 1 Aug 2026 to 31 Aug 2026. EPA consumption. Statistics Canada, table 18-10-0001-01 for Canada petrol price Better value on this metric
Energy cost per 100 miUnited Kingdom £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 Better value on this metric £33.29per 100 mi Petrol at £1.753 per litre, incl. tax, for 12 Oct 2026. EPA consumption. UK DESNZ weekly road fuel prices for United Kingdom petrol price
Energy cost per 100 kmAustralia 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 Better value on this metric A$28.38per 100 km Petrol at A$2.405 per litre, incl. tax, for 5 Oct 2026 to 11 Oct 2026. EPA consumption. Australian Institute of Petroleum weekly reports for Australia petrol price
Energy cost per 100 kmGermany €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 Better value on this metric €25.71per 100 km Petrol at €2.179 per litre, incl. tax, for 19 Oct 2026. EPA consumption. EU Weekly Oil Bulletin for Germany petrol price
Energy cost per 100 kmNetherlands €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 Better value on this metric €28.21per 100 km Petrol at €2.391 per litre, incl. tax, for 19 Oct 2026. EPA consumption. EU Weekly Oil Bulletin for Netherlands petrol price
Energy cost per 100 kmNorway 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 Better value on this metric NOK 229.16per 100 km Petrol at NOK 19.42 per litre, incl. tax, for 1 Aug 2026 to 31 Aug 2026. EPA consumption. Statistics Norway fuel prices (table 09654) for Norway petrol price
Energy cost per 100 kmFrance €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 Better value on this metric €26.30per 100 km Petrol at €2.229 per litre, incl. tax, for 19 Oct 2026. EPA consumption. EU Weekly Oil Bulletin for France petrol price
Energy cost per 100 kmSpain €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 Better value on this metric €21.01per 100 km Petrol at €1.78 per litre, incl. tax, for 19 Oct 2026. EPA consumption. EU Weekly Oil Bulletin for Spain petrol price
Energy cost per 100 kmItaly €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 Better value on this metric €23.79per 100 km Petrol at €2.016 per litre, incl. tax, for 19 Oct 2026. EPA consumption. EU Weekly Oil Bulletin for Italy petrol price
Energy cost per 100 kmBelgium €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 Better value on this metric €23.47per 100 km Petrol at €1.989 per litre, incl. tax, for 19 Oct 2026. EPA consumption. EU Weekly Oil Bulletin for Belgium petrol price
Energy cost per 100 kmAustria €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 Better value on this metric €21.44per 100 km Petrol at €1.817 per litre, incl. tax, for 19 Oct 2026. EPA consumption. EU Weekly Oil Bulletin for Austria petrol price
Energy cost per 100 kmIreland €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 Better value on this metric €23.26per 100 km Petrol at €1.971 per litre, incl. tax, for 19 Oct 2026. EPA consumption. EU Weekly Oil Bulletin for Ireland petrol price
Energy cost per 100 kmSweden 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 SEK 211.10per 100 km Petrol at SEK 17.89 per litre, incl. tax, for 26 Oct 2026. EPA consumption. Preem AB list prices for business customers (Företagskort) for Sweden petrol price Better value on this metric
Energy cost per 100 kmDenmark 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 Better value on this metric DKK 211.46per 100 km Petrol at DKK 17.92 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 petrol price
Energy cost per 100 kmSwitzerland 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 Better value on this metric CHF 23.84per 100 km Petrol at CHF 2.02 per litre, incl. tax, for 1 Sep 2026 to 30 Sep 2026. EPA consumption. BFS LIK Durchschnittspreise für Energie und Treibstoffe (monthly) for Switzerland petrol price
Dimensions
Length 5,916 mm (232.9 in)5,933 mm (233.6 in)
Width 2,063 mm (81.2 in)2,037 mm (80.2 in)
Height 1,990 mm (78.3 in)1,981 mm (78 in)
Wheelbase 3,748 mm (147.6 in)3,701 mm (145.7 in)
Curb weight Not available 2,311 kg2,311 kg (5,095 lb)
Performance
Power 227 kW (305 hp)260 kW (348 hp)Better value on this metric
Torque 671 Nm495 lb-ft (671 Nm)Better value on this metric549 Nm405 lb-ft (549 Nm)
Engine and fuel
Fuel use 24 mpg9.8 L/100 km (EPA)28.8 mpg (EPA)Better value on this metric19.9 mpg11.8 L/100 km (EPA)23.9 mpg (EPA)
Fuel tank 90.8 L121.9 L
Engine size 3,000 cc3,400 cc
Practicality
Seats 55

GMC Sierra Diesel

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.

Toyota Tundra

Specifications: US manufacturers official sites, checked .

Source detailstoyota-cms-media.s3.amazonaws.com/wp-content/uploads/2025/07/2026_Toyota_Tundra_Product_Information.pdf; fueleconomy.gov/feg/Find.do?action=sbs&id=49369. Curb weight is the lowest of the published range. Read: length=233.6in, width=80.2in, height=78.0in, wheelbase=145.7in, curb_weight=5095lb, seats=5, power=348hp, epa_combined_mpg=20mpg. Factors: 25.4 mm/in, 0.45359237 kg/lb, 0.7457 kW/hp, 235.215/mpg, 1.609344 km/mi.

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