Cng, diesel, electric, hybrid and petrol · 1976–2026

GMC Sierra

Fuel use, running costs and specs for the GMC Sierra. By the official figures, the 2026 uses 10.2 L/100km: 28 mpg UK, 23 mpg US.

GMC Sierra in grey
Fuel use
10.2 L/100km
2026 official
UK mpg
28 mpg
US mpg
23 mpg
On a full tank
890 km
91 L tank

What a Sierra costs to run

At today's average petrol prices, by its official fuel use.

CountryAverage price todayCost to driveA typical year
New Zealand$2.94/L petrol$30.08 per 100 km$3,308
Australia$2.41/L petrol$24.70 per 100 km$2,741
United Kingdom£1.74/L petrol£28.71 per 100 miles£2,010
United States$4.35/gal petrol$18.93 per 100 miles$2,556

A typical year: New Zealand 11,000 km (Ministry of Transport's average for a light vehicle); Australia 11,100 km (ABS Survey of Motor Vehicle Use average); United Kingdom 11,265 km (DfT National Travel Survey average of about 7,000 miles); United States 21,726 km (FHWA average of about 13,500 miles). Real costs depend on how and where you drive. Work out a particular trip.

Where the Sierra ranks

No. 14The most fuel-efficient trucks and utesPickup trucks and utes ranked by their official fuel use, with US and UK mpg and what each costs to run a year.No. 6The electric cars that go furthest on a chargeElectric cars ranked by official range, with their energy use and what each costs to charge a year.

T1XX, 2019–2027

Specs for the 5.3 V8 Crew Cab; other versions differ a little.

About

Body
Ute
Size class
Light commercial
Generation
T1XX
Built
2019-2027
Seats
6
Doors
4
Drive
4WD

Engine

Engine
5.3 L V8 petrol
Engine size
5,328 cc
Cylinders
8
Aspiration
Naturally aspirated
Power
265 kW
Torque
519 Nm
Gearbox
10-speed automatic

Economy

Fuel tank
91 L
Minimum petrol
87 RON

Safety

Auto emergency braking
Yes

Features

Apple CarPlay
Yes
Android Auto
Yes

K2XX, 2014–2018

Specs for the 5.3 V8 Crew Cab; other versions differ a little.

About

Body
Ute
Size class
Light commercial
Generation
K2XX
Built
2014-2018
Seats
6
Doors
4
Drive
4WD

Engine

Engine
5.3 L V8 petrol
Engine size
5,328 cc
Cylinders
8
Aspiration
Naturally aspirated
Power
265 kW
Torque
519 Nm
Gearbox
6-speed automatic

Economy

Fuel tank
98 L
Minimum petrol
87 RON

GMT900, 2007–2013

Specs for the 5.3 V8 Crew Cab; other versions differ a little.

About

Body
Ute
Size class
Light commercial
Generation
GMT900
Built
2007-2013
Seats
6
Doors
4
Drive
4WD

Engine

Engine
5.3 L V8 petrol
Engine size
5,328 cc
Cylinders
8
Aspiration
Naturally aspirated
Power
235 kW
Torque
454 Nm
Gearbox
6-speed automatic

Economy

Fuel tank
98 L
Minimum petrol
87 RON

GMT800, 1999–2006

Specs for the 5.3 V8 Extended Cab; other versions differ a little.

About

Body
Ute
Size class
Light commercial
Generation
GMT800
Built
1999-2006
Seats
6
Doors
4
Drive
4WD

Engine

Engine
5.3 L V8 petrol
Engine size
5,328 cc
Cylinders
8
Aspiration
Naturally aspirated
Power
220 kW
Gearbox
4-speed automatic

Economy

Fuel tank
98 L
Minimum petrol
87 RON

C/K, 1973–1998

Specs for the 5.7 V8 pickup; other versions differ a little.

About

Body
Ute
Size class
Light commercial
Generation
C/K
Built
1973-1998
Seats
3
Doors
2
Drive
RWD

Engine

Engine
5.7 L V8 petrol
Engine size
5,733 cc
Cylinders
8
Aspiration
Naturally aspirated
Gearbox
4-speed automatic

Economy

Minimum petrol
87 RON

Official figures by year

From the US EPA, the UK's DfT and NZTA, newest first.

YearFuelUsesUKUSRange
2026Diesel10.2 L/100km28 mpg23 mpg—
2026Electric31.2 kWh/100km2.0 mi/kWh67 MPGe619 km
2026Petrol13.8 L/100km20 mpg17 mpg—
2025Petrol14.7 L/100km19 mpg16 mpg—
2025Electric32.5 kWh/100km1.9 mi/kWh64 MPGe627 km
2025Diesel10.2 L/100km28 mpg23 mpg—
2024Diesel10.7 L/100km26 mpg22 mpg—
2024Petrol14.7 L/100km19 mpg16 mpg—
2023Petrol13.8 L/100km20 mpg17 mpg—
2023Diesel9.8 L/100km29 mpg24 mpg—
2022Diesel9.8 L/100km29 mpg24 mpg—
2022Petrol14.7 L/100km19 mpg16 mpg—
2021Diesel10.1 L/100km28 mpg23 mpg—
2021Petrol13.8 L/100km20 mpg17 mpg—
2020Petrol13.8 L/100km20 mpg17 mpg—
2020Diesel9.8 L/100km29 mpg24 mpg—
2019Petrol13.8 L/100km20 mpg17 mpg—
2018Hybrid13.1 L/100km22 mpg18 mpg—
2018Petrol13.1 L/100km22 mpg18 mpg—
2017Hybrid13.1 L/100km22 mpg18 mpg—
2017Petrol13.8 L/100km20 mpg17 mpg—
2016Hybrid13.1 L/100km22 mpg18 mpg—
2016Petrol13.1 L/100km22 mpg18 mpg—
2015Petrol13.1 L/100km22 mpg18 mpg—
2014Petrol13.8 L/100km20 mpg17 mpg—
2013Petrol14.7 L/100km19 mpg16 mpg—
2013Hybrid11.2 L/100km25 mpg21 mpg—
2012Petrol14.7 L/100km19 mpg16 mpg—
2012Hybrid11.2 L/100km25 mpg21 mpg—
2011Petrol14.7 L/100km19 mpg16 mpg—
2011Hybrid11.2 L/100km25 mpg21 mpg—
2010Hybrid11.2 L/100km25 mpg21 mpg—
2010Petrol15.7 L/100km18 mpg15 mpg—
2009Hybrid11.8 L/100km24 mpg20 mpg—
2009Petrol14.7 L/100km19 mpg16 mpg—
2008Petrol14.7 L/100km19 mpg16 mpg—
2007Petrol15.7 L/100km18 mpg15 mpg—
2007Hybrid14.7 L/100km19 mpg16 mpg—
2006Petrol15.7 L/100km18 mpg15 mpg—
2006Hybrid14.7 L/100km19 mpg16 mpg—

GMC Sierra questions

What is the fuel consumption of the GMC Sierra?

The 2026 GMC Sierra uses 10.2 L/100km by its official figures: 28 mpg in UK gallons and 23 mpg in US gallons. Each year's figures are listed below.

How much electricity does the GMC Sierra use?

The 2026 GMC Sierra uses 31.2 kWh/100km officially (2.0 mi/kWh, 67 MPGe). Its official range is 627 km (390 miles).

How much does a GMC Sierra cost to run a year?

At today's average petrol prices and a typical year's driving: $3,308 in New Zealand, $2,741 in Australia, £2,010 in United Kingdom, $2,556 in United States.

How far does a GMC Sierra go on a full tank?

About 890 km (553 miles) from its 91 L tank at its official fuel use.

Cars like the Sierra

From other makes, closest in what they use.

Ford

F150

1975–2026

10.2 L/100km · 28 mpg UK

Chevrolet

Silverado

1975–2026

10.2 L/100km · 28 mpg UK

Toyota

Tacoma

1995–2026

10.2 L/100km · 28 mpg UK

Hyundai

Santa Cruz

2022–2027

9.8 L/100km · 29 mpg UK

Ram

1500

2013–2027

10.7 L/100km · 26 mpg UK

LDV

T60

2017–2026

8.7 L/100km · 32 mpg UK

More from GMC

GMC

Yukon

1992–2027

10.7 L/100km · 26 mpg UK

GMC

Suburban

1984–1999

16.8 L/100km · 17 mpg UK

GMC

Vandura

1984–1995

13.8 L/100km · 20 mpg UK

GMC

Jimmy

1982–2004

15.7 L/100km · 18 mpg UK

GMC

Safari

1985–1996

14.7 L/100km · 19 mpg UK

GMC

Pickup

1984–1995

16.8 L/100km · 17 mpg UK

GMC

Rally

1984–1995

13.8 L/100km · 20 mpg UK

GMC

Acadia

2007–2027

11.2 L/100km · 25 mpg UK

Every GMC

What will a drive in your Sierra cost?

Roadtrip works out the fuel or charging cost of any drive for your exact car, finds the cheapest stations on the way, and splits it between everyone in the car.

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The Roadtrip app showing a drive into London that costs £4.81 each, with fuel prices along the way