Shown: 2024 GMC Sierra Elevation Crew Cab (T1XX). Photo: Mr.choppers, CC BY-SA 3.0, via Wikimedia Commons

Newest year: 2026
Gas
Electric
Diesel
Standard pickups

2019-2026 GMC Sierra MPG & Fuel Cost

8 model years · 14–26 MPG combined

Combined

City

Highway

Annual fuel cost · Sierra 2.7L 4-cyl turbo RWD

$3,340

15,000 mi/yr · regular gasoline $4.36/gal (U.S. average, Sep 2026)

Cheaper to fuel than 6 of 10 standard pickup configurations, MY2026. Ranked against all rated configurations, not sales-weighted.

Previous generation: 2014-2018

2019-2026 GMC Sierra at a glance

The 2019-2026 GMC Sierra covers 8 model years in the EPA database (216 configurations in all), rated 14–26 MPG combined. The newest model year, 2026, costs about $3,730 a year to fuel for its most efficient version, the Sierra 3.0L 6-cyl turbo RWD (25 MPG), at diesel $6.29/gal (U.S. average, Sep 2026). Powertrains over the years: gas, electric and diesel. EPA changed the ratings in 2020, 2021, 2022, 2023, 2024, 2025 and 2026. The best combined rating in the generation, 26 MPG, was reached in 2020, 2021, 2022, 2023 and 2025.

2019-2026 GMC Sierra by model year

2019-2026 GMC Sierra: EPA combined rating and yearly fuel cost for each model year
Model year	Powertrains	Combined	$/yr	EPA ratings
2026	Gas, Electric, Diesel	15–25 MPG, 64–68 MPGe	$1,360–$5,360	Ratings changed
2025	Gas, Electric, Diesel	15–26 MPG, 64 MPGe	$1,440–$5,360	Ratings changed
2024	Gas, Diesel	15–25 MPG	$3,310–$5,360	Ratings changed
2023	Gas, Diesel	15–26 MPG	$3,290–$5,300	Ratings changed
2022	Gas, Diesel	14–26 MPG	$3,240–$5,600	Ratings changed
2021	Gas, Diesel	14–26 MPG	$3,100–$5,020	Ratings changed
2020	Gas, Diesel	15–26 MPG	$3,100–$4,750	Ratings changed
2019	Gas	15–21 MPG	$3,100–$4,750	First year

What the 2026 Sierra 2.7L 4-cyl turbo RWD costs to drive

Per month

$278

$3,340 a year ÷ 12

Per 25 miles

$5.57

Per 100 miles

$22.27

Five years

$16,700

5 × the yearly cost, prices held at today's level

vs the standard pickup median

$120less a year

Class median $3,460 a year, MY2026

Based on 15,000 miles a year and regular gasoline $4.36/gal (U.S. average, Sep 2026).

2026 GMC Sierra MPG

Versus 2025: The most efficient configuration moves from 26 to 25 MPG, down 1. Its annual cost goes from $3,700 to $3,730, $30 more.

Gas · 2.7L, 5.3L, 6.2L

Combined

15–20 MPG

Per year

$3,340–$5,360

See gas configurations

Electric · 4WD

Combined

64–68 MPGe

Per year

$1,360–$1,440

EPA range 283–410 miles.

See electric configurations

Diesel · 3.0L

Combined

19–25 MPG

Per year

$3,730–$4,860

See diesel configurations

Gas configurations (18)

2026 GMC Sierra gas configurations: EPA ratings and annual cost
Trim	Engine	Drive	City	Hwy	Comb.	$/yr
Sierra 2.7L 4-cyl turbo RWD (Most efficient)	2.7L 4-cyl turbo	RWD	18	21	20	$3,340
with Sport Mode 2.7L 4-cyl turbo RWD	2.7L 4-cyl turbo	RWD	17	21	19	$3,470
with Sport Mode 5.3L 8-cyl RWD	5.3L 8-cyl	RWD	16	21	18	$3,610
Sierra 2.7L 4-cyl turbo 4WD	2.7L 4-cyl turbo	4WD	17	20	18	$3,620
Sierra 5.3L 8-cyl RWD	5.3L 8-cyl	RWD	16	20	17	$3,790
with Sport Mode 2.7L 4-cyl turbo 4WD	2.7L 4-cyl turbo	4WD	17	18	17	$3,790
with Sport Mode 5.3L 8-cyl 4WD	5.3L 8-cyl	4WD	15	19	17	$3,840
FFV	5.3L 8-cyl	4WD	15	19	17	$3,860
Mud Terrain Tires FFV	5.3L 8-cyl	4WD	15	19	17	$3,860
Mud Terrain Tires 2.7L 4-cyl turbo	2.7L 4-cyl turbo	4WD	16	17	17	$3,950

Show 8 more configurations

2026 GMC Sierra gas configurations: EPA ratings and annual cost (+8)
Trim	Engine	Drive	City	Hwy	Comb.	$/yr
Sierra 5.3L 8-cyl 4WD	5.3L 8-cyl	4WD	15	18	16	$4,050
Cab Chassis 5.3L 8-cyl RWD	5.3L 8-cyl	RWD	15	18	16	$4,070
Mud Terrain Tires (Sport Mode)	5.3L 8-cyl	4WD	15	18	16	$4,130
Mud Terrain Tires 5.3L 8-cyl	5.3L 8-cyl	4WD	14	17	16	$4,170
Sierra 6.2L 8-cyl	6.2L 8-cyl	4WD	15	19	16	$4,870
Cab Chassis 5.3L 8-cyl 4WD	5.3L 8-cyl	4WD	14	16	15	$4,270
AT4X	6.2L 8-cyl	4WD	14	16	15	$5,200
Mud Terrain Tires 6.2L 8-cyl	6.2L 8-cyl	4WD	14	17	15	$5,360

3 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).

Flex-fuel (E85) configurations are costed on gasoline, not E85.

Electric configurations (3)

2026 GMC Sierra electric configurations: EPA ratings and annual cost
Trim	Drive	kWh/100 mi	MPGe	Range	$/yr
EV Ext Range (11kW Charger) (Most efficient)	4WD	50	68	410 mi	$1,360
EV Std Range (11kW Charger)	4WD	50	67	283 mi	$1,380
EV Ext Range (19kW Charger)	4WD	52	64	385 mi	$1,440

MPGe is the distance an electric car travels on 33.7 kWh, the energy in a gallon of gasoline. Fewer kWh per 100 miles means a lower running cost.

Diesel configurations (4)

2026 GMC Sierra diesel configurations: EPA ratings and annual cost
Trim	Engine	Drive	City	Hwy	Comb.	$/yr
Sierra (Most efficient)	3.0L 6-cyl turbo	RWD	23	28	25	$3,730
with Sport Mode	3.0L 6-cyl turbo	4WD	22	26	24	$3,980
Mud Terrain Tires with Sport Mode	3.0L 6-cyl turbo	4WD	21	24	23	$4,180
AT4X with Sport Mode	3.0L 6-cyl turbo	4WD	19	20	19	$4,860

Diesel is priced at diesel $6.29/gal (U.S. average, Sep 2026).

2025 GMC Sierra MPG

15–26 MPG, 64 MPGe · $1,440–$5,360/yr

Versus 2024: The most efficient configuration moves from 25 to 26 MPG, up 1. Its annual cost stays at $3,700.

Gas · 2.7L, 5.3L, 6.2L

Combined

15–19 MPG

Per year

$3,450–$5,360

See gas configurations

Electric · 4WD

Combined

64 MPGe

Per year

$1,440

EPA range 390 miles.

See electric configurations

Diesel · 3.0L

Combined

19–26 MPG

Per year

$3,700–$4,860

See diesel configurations

Gas configurations (20)

2025 GMC Sierra gas configurations: EPA ratings and annual cost
Trim	Engine	Drive	City	Hwy	Comb.	$/yr
Sierra 2.7L 4-cyl turbo RWD Automatic 8-spd (Most efficient)	2.7L 4-cyl turbo	RWD	18	21	19	$3,450
Sierra 2.7L 4-cyl turbo RWD Automatic 8-spd	2.7L 4-cyl turbo	RWD	17	21	19	$3,460
Sierra 5.3L 8-cyl RWD Automatic 10-spd	5.3L 8-cyl	RWD	16	21	18	$3,610
Sierra 2.7L 4-cyl turbo 4WD Automatic 8-spd	2.7L 4-cyl turbo	4WD	17	19	18	$3,650
Sierra 5.3L 8-cyl RWD Automatic 10-spd	5.3L 8-cyl	RWD	16	20	17	$3,730
Sierra 2.7L 4-cyl turbo 4WD Automatic 8-spd	2.7L 4-cyl turbo	4WD	17	18	17	$3,790

Show 10 more configurations

2025 GMC Sierra gas configurations: EPA ratings and annual cost (+14)
Trim	Engine	Drive	City	Hwy	Comb.	$/yr
Sierra 5.3L 8-cyl 4WD Automatic 10-spd	5.3L 8-cyl	4WD	15	19	17	$3,860
Mud Terrain Tires 5.3L 8-cyl 4WD Automatic 10-spd	5.3L 8-cyl	4WD	15	19	17	$3,860
Sierra 5.3L 8-cyl 4WD Automatic 10-spd	5.3L 8-cyl	4WD	15	19	17	$3,870
Sierra 5.3L 8-cyl 4WD Automatic 10-spd	5.3L 8-cyl	4WD	15	19	17	$3,940
Mud Terrain Tires 2.7L 4-cyl turbo	2.7L 4-cyl turbo	4WD	16	17	16	$3,960
Sierra 5.3L 8-cyl 4WD Automatic 10-spd	5.3L 8-cyl	4WD	15	19	16	$4,020
Mud Terrain Tires 5.3L 8-cyl 4WD Automatic 10-spd	5.3L 8-cyl	4WD	15	19	16	$4,020
Mud Terrain Tires 5.3L 8-cyl 4WD Automatic 10-spd	5.3L 8-cyl	4WD	15	18	16	$4,050
Cab Chassis 5.3L 8-cyl RWD	5.3L 8-cyl	RWD	15	18	16	$4,060
Mud Terrain Tires 5.3L 8-cyl 4WD Automatic 10-spd	5.3L 8-cyl	4WD	15	18	16	$4,080
Sierra 6.2L 8-cyl	6.2L 8-cyl	4WD	15	19	16	$4,870
Cab Chassis 5.3L 8-cyl 4WD	5.3L 8-cyl	4WD	14	16	15	$4,270
AT4X	6.2L 8-cyl	4WD	14	16	15	$5,200
Mud Terrain Tires 6.2L 8-cyl	6.2L 8-cyl	4WD	14	17	15	$5,360

3 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).

Flex-fuel (E85) configurations are costed on gasoline, not E85.

Electric configurations (1)

2025 GMC Sierra electric configurations: EPA ratings and annual cost
Trim	Drive	kWh/100 mi	MPGe	Range	$/yr
EV (Most efficient)	4WD	52	64	390 mi	$1,440

MPGe is the distance an electric car travels on 33.7 kWh, the energy in a gallon of gasoline. Fewer kWh per 100 miles means a lower running cost.

Diesel configurations (4)

2025 GMC Sierra diesel configurations: EPA ratings and annual cost
Trim	Engine	Drive	City	Hwy	Comb.	$/yr
Sierra 3.0L 6-cyl turbo RWD (Most efficient)	3.0L 6-cyl turbo	RWD	23	29	26	$3,700
Sierra 3.0L 6-cyl turbo 4WD	3.0L 6-cyl turbo	4WD	22	26	24	$3,980
Mud Terrain Tires	3.0L 6-cyl turbo	4WD	21	24	23	$4,180
AT4X	3.0L 6-cyl turbo	4WD	19	20	19	$4,860

Diesel is priced at diesel $6.29/gal (U.S. average, Sep 2026).

2024 GMC Sierra MPG

15–25 MPG · $3,310–$5,360/yr

Versus 2023: The most efficient configuration moves from 26 to 25 MPG, down 1. Its annual cost goes from $3,640 to $3,700, $60 more.

Gas · 2.7L, 5.3L, 6.2L

Combined

15–20 MPG

Per year

$3,310–$5,360

See gas configurations

Diesel · 3.0L

Combined

19–25 MPG

Per year

$3,700–$4,860

See diesel configurations

Gas configurations (22)

2024 GMC Sierra gas configurations: EPA ratings and annual cost
Trim	Engine	Drive	City	Hwy	Comb.	$/yr
Sierra 2.7L 4-cyl turbo RWD Automatic 8-spd (Most efficient)	2.7L 4-cyl turbo	RWD	18	22	20	$3,310
Sierra 2.7L 4-cyl turbo RWD Automatic 8-spd	2.7L 4-cyl turbo	RWD	17	21	19	$3,460
Sierra 2.7L 4-cyl turbo 4WD Automatic 8-spd	2.7L 4-cyl turbo	4WD	17	20	18	$3,580
Sierra 5.3L 8-cyl RWD Automatic 10-spd	5.3L 8-cyl	RWD	16	21	18	$3,610
Sierra 5.3L 8-cyl RWD Automatic 10-spd	5.3L 8-cyl	RWD	16	20	18	$3,640
Sierra 5.3L 8-cyl RWD Automatic 10-spd	5.3L 8-cyl	RWD	16	20	18	$3,720

Show 12 more configurations

2024 GMC Sierra gas configurations: EPA ratings and annual cost (+16)
Trim	Engine	Drive	City	Hwy	Comb.	$/yr
Sierra 5.3L 8-cyl 4WD Automatic 10-spd	5.3L 8-cyl	4WD	15	20	17	$3,760
Sierra 2.7L 4-cyl turbo 4WD Automatic 8-spd	2.7L 4-cyl turbo	4WD	17	18	17	$3,780
Sierra 5.3L 8-cyl 4WD Automatic 10-spd	5.3L 8-cyl	4WD	15	19	17	$3,860
Mud Terrain Tires 5.3L 8-cyl 4WD Automatic 10-spd	5.3L 8-cyl	4WD	15	19	17	$3,860
Sierra 5.3L 8-cyl 4WD Automatic 10-spd	5.3L 8-cyl	4WD	15	19	17	$3,920
Mud Terrain Tires 2.7L 4-cyl turbo	2.7L 4-cyl turbo	4WD	16	17	16	$4,000
Sierra 5.3L 8-cyl RWD Automatic 10-spd	5.3L 8-cyl	RWD	15	19	16	$4,020
Sierra 5.3L 8-cyl 4WD Automatic 10-spd	5.3L 8-cyl	4WD	15	19	16	$4,020
Mud Terrain Tires 5.3L 8-cyl 4WD Automatic 10-spd	5.3L 8-cyl	4WD	15	19	16	$4,020
Mud Terrain Tires 5.3L 8-cyl 4WD Automatic 10-spd	5.3L 8-cyl	4WD	15	18	16	$4,080
Mud Terrain Tires 5.3L 8-cyl 4WD Automatic 10-spd	5.3L 8-cyl	4WD	15	18	16	$4,110
Sierra 6.2L 8-cyl	6.2L 8-cyl	4WD	15	19	16	$4,870
Cab Chassis 5.3L 8-cyl 4WD	5.3L 8-cyl	4WD	14	17	15	$4,260
Cab Chassis 5.3L 8-cyl RWD	5.3L 8-cyl	RWD	14	17	15	$4,280
AT4X	6.2L 8-cyl	4WD	14	16	15	$5,200
Mud Terrain Tires 6.2L 8-cyl	6.2L 8-cyl	4WD	14	17	15	$5,360

3 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).

Flex-fuel (E85) configurations are costed on gasoline, not E85.

Diesel configurations (4)

2024 GMC Sierra diesel configurations: EPA ratings and annual cost
Trim	Engine	Drive	City	Hwy	Comb.	$/yr
Sierra 3.0L 6-cyl turbo RWD (Most efficient)	3.0L 6-cyl turbo	RWD	23	29	25	$3,700
Sierra 3.0L 6-cyl turbo 4WD	3.0L 6-cyl turbo	4WD	23	27	24	$3,860
Mud Terrain Tires	3.0L 6-cyl turbo	4WD	21	23	22	$4,370
AT4X	3.0L 6-cyl turbo	4WD	19	20	19	$4,860

Diesel is priced at diesel $6.29/gal (U.S. average, Sep 2026).

2023 GMC Sierra MPG

15–26 MPG · $3,290–$5,300/yr

Versus 2022: The most efficient configuration stays at 26 MPG. Its annual cost goes from $3,590 to $3,640, $50 more.

Gas · 2.7L, 5.3L, 6.2L

Combined

15–20 MPG

Per year

$3,290–$5,300

See gas configurations

Diesel · 3.0L

Combined

22–26 MPG

Per year

$3,640–$4,300

See diesel configurations

Gas configurations (20)

2023 GMC Sierra gas configurations: EPA ratings and annual cost
Trim	Engine	Drive	City	Hwy	Comb.	$/yr
Sierra 2.7L 4-cyl turbo RWD Automatic 8-spd (Most efficient)	2.7L 4-cyl turbo	RWD	19	22	20	$3,290
Sierra 2.7L 4-cyl turbo RWD Automatic 8-spd	2.7L 4-cyl turbo	RWD	19	21	20	$3,330
Sierra 2.7L 4-cyl turbo 4WD Automatic 8-spd	2.7L 4-cyl turbo	4WD	18	20	19	$3,430
Sierra 2.7L 4-cyl turbo 4WD Automatic 8-spd	2.7L 4-cyl turbo	4WD	18	20	19	$3,440
Sierra 5.3L 8-cyl RWD Automatic 10-spd	5.3L 8-cyl	RWD	16	21	18	$3,540
Sierra 5.3L 8-cyl RWD Automatic 10-spd	5.3L 8-cyl	RWD	16	21	18	$3,550

Show 10 more configurations

2023 GMC Sierra gas configurations: EPA ratings and annual cost (+14)
Trim	Engine	Drive	City	Hwy	Comb.	$/yr
Sierra 5.3L 8-cyl RWD Automatic 10-spd	5.3L 8-cyl	RWD	16	20	18	$3,640
Sierra 5.3L 8-cyl RWD Automatic 10-spd	5.3L 8-cyl	RWD	16	20	18	$3,680
Mud Terrain Tires 2.7L 4-cyl turbo	2.7L 4-cyl turbo	4WD	17	18	17	$3,770
Sierra 5.3L 8-cyl 4WD Automatic 10-spd	5.3L 8-cyl	4WD	16	20	17	$3,840
Sierra 5.3L 8-cyl 4WD Automatic 10-spd	5.3L 8-cyl	4WD	15	19	17	$3,860
Mud Terrain Tires 5.3L 8-cyl 4WD Automatic 10-spd	5.3L 8-cyl	4WD	15	19	17	$3,860
Sierra 5.3L 8-cyl 4WD Automatic 10-spd	5.3L 8-cyl	4WD	15	19	17	$3,940
Sierra 6.2L 8-cyl	6.2L 8-cyl	4WD	15	19	17	$4,790
Cab Chassis 5.3L 8-cyl RWD	5.3L 8-cyl	RWD	15	18	16	$4,070
Mud Terrain Tires 5.3L 8-cyl 4WD Automatic 10-spd	5.3L 8-cyl	4WD	15	18	16	$4,080
Mud Terrain Tires 5.3L 8-cyl 4WD Automatic 10-spd	5.3L 8-cyl	4WD	15	19	16	$4,080
Cab Chassis 5.3L 8-cyl 4WD	5.3L 8-cyl	4WD	15	17	16	$4,150
Mud Terrain Tires 6.2L 8-cyl	6.2L 8-cyl	4WD	14	17	15	$5,300
AT4X	6.2L 8-cyl	4WD	14	17	15	$5,300

3 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).

Flex-fuel (E85) configurations are costed on gasoline, not E85.

Diesel configurations (3)

2023 GMC Sierra diesel configurations: EPA ratings and annual cost
Trim	Engine	Drive	City	Hwy	Comb.	$/yr
Sierra 3.0L 6-cyl turbo RWD (Most efficient)	3.0L 6-cyl turbo	RWD	24	29	26	$3,640
Sierra 3.0L 6-cyl turbo 4WD	3.0L 6-cyl turbo	4WD	22	27	24	$3,860
Mud Terrain Tires	3.0L 6-cyl turbo	4WD	21	23	22	$4,300

Diesel is priced at diesel $6.29/gal (U.S. average, Sep 2026).

2022 GMC Sierra MPG

14–26 MPG · $3,240–$5,600/yr

Versus 2021: The most efficient configuration stays at 26 MPG. Its annual cost goes from $3,640 to $3,590, $50 less.

Gas · 2.7L, 5.3L, 6.2L

Combined

14–20 MPG

Per year

$3,240–$5,600

See gas configurations

Diesel · 3.0L

Combined

21–26 MPG

Per year

$3,590–$4,480

See diesel configurations

Gas configurations (30)

2022 GMC Sierra gas configurations: EPA ratings and annual cost
Trim	Engine	Drive	City	Hwy	Comb.	$/yr
Sierra 2.7L 4-cyl turbo RWD (Most efficient)	2.7L 4-cyl turbo	RWD	19	22	20	$3,240
Sierra 5.3L 8-cyl RWD Automatic 10-spd	5.3L 8-cyl	RWD	16	21	18	$3,580
Sierra 2.7L 4-cyl turbo 4WD Automatic 8-spd	2.7L 4-cyl turbo	4WD	17	20	18	$3,600
Sierra 5.3L 8-cyl RWD Automatic 10-spd	5.3L 8-cyl	RWD	16	21	18	$3,620
Sierra 2.7L 4-cyl turbo 4WD Automatic 8-spd	2.7L 4-cyl turbo	4WD	17	20	18	$3,630
Sierra 5.3L 8-cyl RWD Automatic 8-spd	5.3L 8-cyl	RWD	16	21	18	$3,700

Show 20 more configurations

2022 GMC Sierra gas configurations: EPA ratings and annual cost (+24)
Trim	Engine	Drive	City	Hwy	Comb.	$/yr
Sierra 5.3L 8-cyl RWD Automatic 8-spd	5.3L 8-cyl	RWD	16	21	18	$3,720
Sierra 5.3L 8-cyl 4WD Automatic 10-spd	5.3L 8-cyl	4WD	16	20	17	$3,770
Sierra 5.3L 8-cyl 4WD Automatic 8-spd	5.3L 8-cyl	4WD	15	20	17	$3,830
Mud Terrain Tires 2.7L 4-cyl turbo	2.7L 4-cyl turbo	4WD	16	18	17	$3,840
Sierra 5.3L 8-cyl 4WD Automatic 8-spd	5.3L 8-cyl	4WD	15	20	17	$3,850
Sierra 5.3L 8-cyl 4WD Automatic 10-spd	5.3L 8-cyl	4WD	15	19	17	$3,890
Cab Chassis 5.3L 8-cyl RWD Automatic 10-spd	5.3L 8-cyl	RWD	15	18	17	$3,940
Sierra 6.2L 8-cyl 4WD Automatic 10-spd	6.2L 8-cyl	4WD	15	20	17	$4,780
Sierra 5.3L 8-cyl 4WD Automatic 10-spd	5.3L 8-cyl	4WD	14	19	16	$3,970
Sierra 5.3L 8-cyl 4WD Automatic 10-spd	5.3L 8-cyl	4WD	15	19	16	$4,010
Sierra 5.3L 8-cyl RWD Automatic 6-spd	5.3L 8-cyl	RWD	15	19	16	$4,080
Sierra 5.3L 8-cyl 4WD Automatic 6-spd	5.3L 8-cyl	4WD	14	18	16	$4,080
Sierra 5.3L 8-cyl 4WD Automatic 10-spd	5.3L 8-cyl	4WD	14	19	16	$4,080
Cab Chassis 5.3L 8-cyl 4WD Automatic 10-spd	5.3L 8-cyl	4WD	15	17	16	$4,080
Sierra 6.2L 8-cyl 4WD Automatic 10-spd	6.2L 8-cyl	4WD	14	19	16	$5,020
Mud Terrain Tires 6.2L 8-cyl 4WD Automatic 10-spd	6.2L 8-cyl	4WD	14	18	16	$5,110
Cab Chassis 5.3L 8-cyl 4WD Automatic 10-spd	5.3L 8-cyl	4WD	13	17	15	$4,230
Mud Terrain Tires 5.3L 8-cyl 4WD Automatic 8-spd	5.3L 8-cyl	4WD	14	18	15	$4,250
Mud Terrain Tires 5.3L 8-cyl 4WD Automatic 10-spd	5.3L 8-cyl	4WD	14	17	15	$4,270
Mud Terrain Tires 5.3L 8-cyl 4WD Automatic 6-spd	5.3L 8-cyl	4WD	14	16	15	$4,290
Cab Chassis 5.3L 8-cyl RWD Automatic 8-spd	5.3L 8-cyl	RWD	14	17	15	$4,290
Cab Chassis 5.3L 8-cyl 4WD Automatic 8-spd	5.3L 8-cyl	4WD	14	17	15	$4,330
Mud Terrain Tires 5.3L 8-cyl 4WD Automatic 10-spd	5.3L 8-cyl	4WD	13	17	15	$4,360
Mud Terrain Tires 6.2L 8-cyl 4WD Automatic 10-spd	6.2L 8-cyl	4WD	13	17	14	$5,600

4 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).

Flex-fuel (E85) configurations are costed on gasoline, not E85.

Diesel configurations (3)

2022 GMC Sierra diesel configurations: EPA ratings and annual cost
Trim	Engine	Drive	City	Hwy	Comb.	$/yr
Sierra 3.0L 6-cyl turbo RWD (Most efficient)	3.0L 6-cyl turbo	RWD	23	30	26	$3,590
Sierra 3.0L 6-cyl turbo 4WD	3.0L 6-cyl turbo	4WD	22	26	24	$3,960
Mud Terrain Tires	3.0L 6-cyl turbo	4WD	20	23	21	$4,480

Diesel is priced at diesel $6.29/gal (U.S. average, Sep 2026).

2021 GMC Sierra MPG

14–26 MPG · $3,100–$5,020/yr

Versus 2020: The most efficient configuration stays at 26 MPG. Its annual cost stays at $3,640.

Gas · 2.7L, 4.3L, 5.3L…

Combined

14–21 MPG

Per year

$3,100–$5,020

See gas configurations

Diesel · 3.0L

Combined

24–26 MPG

Per year

$3,640–$3,990

See diesel configurations

Gas configurations (33)

2021 GMC Sierra gas configurations: EPA ratings and annual cost
Trim	Engine	Drive	City	Hwy	Comb.	$/yr
Sierra 2.7L 4-cyl turbo RWD Automatic 8-spd (Most efficient)	2.7L 4-cyl turbo	RWD	20	23	21	$3,100
Sierra 2.7L 4-cyl turbo RWD Automatic 8-spd	2.7L 4-cyl turbo	RWD	20	23	21	$3,100
Sierra 2.7L 4-cyl turbo 4WD Automatic 8-spd	2.7L 4-cyl turbo	4WD	18	21	19	$3,410
Sierra 5.3L 8-cyl RWD Automatic 8-spd	5.3L 8-cyl	RWD	17	23	19	$3,420
Sierra 2.7L 4-cyl turbo 4WD Automatic 8-spd	2.7L 4-cyl turbo	4WD	18	20	19	$3,500
Sierra 5.3L 8-cyl 4WD Automatic 10-spd	5.3L 8-cyl	4WD	16	22	19	$3,520

Show 23 more configurations

2021 GMC Sierra gas configurations: EPA ratings and annual cost (+27)
Trim	Engine	Drive	City	Hwy	Comb.	$/yr
AT4 5.3L 8-cyl 4WD Automatic 8-spd	5.3L 8-cyl	4WD	16	21	18	$3,560
AT4 5.3L 8-cyl 4WD Automatic 10-spd	5.3L 8-cyl	4WD	16	21	18	$3,630
Sierra 5.3L 8-cyl 4WD Automatic 8-spd	5.3L 8-cyl	4WD	16	21	18	$3,700
Sierra 5.3L 8-cyl 4WD Automatic 10-spd	5.3L 8-cyl	4WD	15	21	18	$3,710
Sierra 5.3L 8-cyl RWD Automatic 8-spd	5.3L 8-cyl	RWD	15	22	17	$3,800
Sierra 5.3L 8-cyl RWD Automatic 6-spd	5.3L 8-cyl	RWD	15	21	17	$3,840
Sierra 4.3L 6-cyl RWD	4.3L 6-cyl	RWD	16	21	17	$3,840
Cab Chassis 4.3L 6-cyl RWD	4.3L 6-cyl	RWD	15	19	17	$3,840
AT4 5.3L 8-cyl 4WD Automatic 10-spd	5.3L 8-cyl	4WD	15	21	17	$3,840
Sierra 5.3L 8-cyl 4WD Automatic 6-spd	5.3L 8-cyl	4WD	15	20	17	$3,860
Sierra 4.3L 6-cyl 4WD	4.3L 6-cyl	4WD	15	20	17	$3,900
Sierra 6.2L 8-cyl 4WD Automatic 10-spd	6.2L 8-cyl	4WD	16	20	17	$4,610
AT4 6.2L 8-cyl 4WD Automatic 10-spd	6.2L 8-cyl	4WD	15	19	17	$4,730
AT4 5.3L 8-cyl 4WD Automatic 6-spd	5.3L 8-cyl	4WD	14	18	16	$3,980
Sierra 5.3L 8-cyl RWD Automatic 6-spd	5.3L 8-cyl	RWD	14	21	16	$3,990
AT4 5.3L 8-cyl 4WD Automatic 8-spd	5.3L 8-cyl	4WD	14	20	16	$4,000
Sierra 5.3L 8-cyl RWD Automatic 6-spd	5.3L 8-cyl	RWD	15	19	16	$4,020
Sierra 5.3L 8-cyl 4WD Automatic 6-spd	5.3L 8-cyl	4WD	14	20	16	$4,120
Sierra 5.3L 8-cyl 4WD Automatic 8-spd	5.3L 8-cyl	4WD	14	20	16	$4,120
Sierra 5.3L 8-cyl 4WD Automatic 6-spd	5.3L 8-cyl	4WD	14	18	16	$4,140
Sierra 6.2L 8-cyl 4WD Automatic 10-spd	6.2L 8-cyl	4WD	15	20	16	$4,880
AT4 6.2L 8-cyl 4WD Automatic 10-spd	6.2L 8-cyl	4WD	14	19	16	$5,020
Cab Chassis 5.3L 8-cyl 4WD Automatic 6-spd	5.3L 8-cyl	4WD	14	17	15	$4,360
Cab Chassis 4.3L 6-cyl 4WD	4.3L 6-cyl	4WD	14	16	15	$4,360
Cab Chassis 5.3L 8-cyl RWD Automatic 6-spd	5.3L 8-cyl	RWD	14	18	15	$4,360
Cab Chassis 5.3L 8-cyl 4WD Automatic 6-spd	5.3L 8-cyl	4WD	13	17	14	$4,670
Cab Chassis 5.3L 8-cyl RWD Automatic 6-spd	5.3L 8-cyl	RWD	13	18	14	$4,670

4 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).

Flex-fuel (E85) configurations are costed on gasoline, not E85.

Diesel configurations (3)

2021 GMC Sierra diesel configurations: EPA ratings and annual cost
Trim	Engine	Drive	City	Hwy	Comb.	$/yr
Sierra 3.0L 6-cyl turbo RWD (Most efficient)	3.0L 6-cyl turbo	RWD	23	30	26	$3,640
Sierra 3.0L 6-cyl turbo 4WD	3.0L 6-cyl turbo	4WD	22	26	24	$3,990
AT4	3.0L 6-cyl turbo	4WD	22	26	24	$3,990

Diesel is priced at diesel $6.29/gal (U.S. average, Sep 2026).

2020 GMC Sierra MPG

15–26 MPG · $3,100–$4,750/yr

Versus 2019: The most efficient configuration moves from 21 to 26 MPG, up 5. Its annual cost goes from $3,100 to $3,640, $540 more.

Gas · 2.7L, 4.3L, 5.3L…

Combined

15–21 MPG

Per year

$3,100–$4,750

See gas configurations

Diesel · 3.0L

Combined

24–26 MPG

Per year

$3,640–$3,960

See diesel configurations

Gas configurations (23)

2020 GMC Sierra gas configurations: EPA ratings and annual cost
Trim	Engine	Drive	City	Hwy	Comb.	$/yr
Sierra 2.7L 4-cyl turbo RWD Automatic 8-spd (Most efficient)	2.7L 4-cyl turbo	RWD	20	23	21	$3,100
Sierra 2.7L 4-cyl turbo RWD Automatic 8-spd	2.7L 4-cyl turbo	RWD	19	22	20	$3,260
Sierra 2.7L 4-cyl turbo 4WD Automatic 8-spd	2.7L 4-cyl turbo	4WD	19	22	20	$3,260
Sierra 2.7L 4-cyl turbo 4WD Automatic 8-spd	2.7L 4-cyl turbo	4WD	19	22	20	$3,260
Sierra 5.3L 8-cyl RWD Automatic 8-spd	5.3L 8-cyl	RWD	17	24	20	$3,290
Sierra 5.3L 8-cyl RWD Automatic 8-spd	5.3L 8-cyl	RWD	17	23	19	$3,400

Show 13 more configurations

2020 GMC Sierra gas configurations: EPA ratings and annual cost (+17)
Trim	Engine	Drive	City	Hwy	Comb.	$/yr
Sierra 5.3L 8-cyl 4WD Automatic 10-spd	5.3L 8-cyl	4WD	16	22	19	$3,520
AT4 5.3L 8-cyl 4WD Automatic 8-spd	5.3L 8-cyl	4WD	16	21	18	$3,570
Sierra 5.3L 8-cyl 4WD Automatic 8-spd	5.3L 8-cyl	4WD	16	22	18	$3,600
AT4 5.3L 8-cyl 4WD Automatic 10-spd	5.3L 8-cyl	4WD	16	21	18	$3,630
Sierra 4.3L 6-cyl RWD	4.3L 6-cyl	RWD	16	21	17	$3,840
Cab Chassis 4.3L 6-cyl RWD	4.3L 6-cyl	RWD	15	19	17	$3,840
Sierra 5.3L 8-cyl RWD Automatic 6-spd	5.3L 8-cyl	RWD	15	21	17	$3,850
Sierra 5.3L 8-cyl 4WD Automatic 6-spd	5.3L 8-cyl	4WD	15	20	17	$3,890
Sierra 4.3L 6-cyl 4WD	4.3L 6-cyl	4WD	15	20	17	$3,910
AT4 6.2L 8-cyl	6.2L 8-cyl	4WD	15	19	17	$4,660
Sierra 6.2L 8-cyl	6.2L 8-cyl	4WD	15	20	17	$4,750
Sierra 5.3L 8-cyl RWD Automatic 6-spd	5.3L 8-cyl	RWD	15	19	16	$4,010
Sierra 5.3L 8-cyl 4WD Automatic 6-spd	5.3L 8-cyl	4WD	14	19	16	$4,030
AT4 5.3L 8-cyl 4WD Automatic 6-spd	5.3L 8-cyl	4WD	14	18	16	$4,080
Cab Chassis 5.3L 8-cyl RWD	5.3L 8-cyl	RWD	14	18	15	$4,280
Cab Chassis 5.3L 8-cyl 4WD	5.3L 8-cyl	4WD	14	17	15	$4,360
Cab Chassis 4.3L 6-cyl 4WD	4.3L 6-cyl	4WD	14	16	15	$4,370

2 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).

Flex-fuel (E85) configurations are costed on gasoline, not E85.

Diesel configurations (3)

2020 GMC Sierra diesel configurations: EPA ratings and annual cost
Trim	Engine	Drive	City	Hwy	Comb.	$/yr
Sierra 3.0L 6-cyl turbo RWD (Most efficient)	3.0L 6-cyl turbo	RWD	23	30	26	$3,640
Sierra 3.0L 6-cyl turbo 4WD	3.0L 6-cyl turbo	4WD	22	26	24	$3,960
AT4	3.0L 6-cyl turbo	4WD	22	26	24	$3,960

Diesel is priced at diesel $6.29/gal (U.S. average, Sep 2026).

2019 GMC Sierra MPG

15–21 MPG · $3,100–$4,750/yr

Gas · 2.7L, 4.3L, 5.3L…

Combined

15–21 MPG

Per year

$3,100–$4,750

Gas configurations (22)

2019 GMC Sierra gas configurations: EPA ratings and annual cost
Trim	Engine	Drive	City	Hwy	Comb.	$/yr
C10 2.7L 4-cyl turbo RWD Automatic 8-spd (Most efficient)	2.7L 4-cyl turbo	RWD	20	23	21	$3,100
C10 2.7L 4-cyl turbo RWD Automatic 8-spd	2.7L 4-cyl turbo	RWD	19	22	20	$3,260
K10 2.7L 4-cyl turbo 4WD Automatic 8-spd	2.7L 4-cyl turbo	4WD	19	22	20	$3,280
C10 XFE	5.3L 8-cyl	RWD	17	24	19	$3,350
C10 5.3L 8-cyl RWD Automatic 8-spd	5.3L 8-cyl	RWD	17	23	19	$3,470
K10 2.7L 4-cyl turbo 4WD Automatic 8-spd	2.7L 4-cyl turbo	4WD	18	20	19	$3,500

Show 12 more configurations

2019 GMC Sierra gas configurations: EPA ratings and annual cost (+16)
Trim	Engine	Drive	City	Hwy	Comb.	$/yr
K10 5.3L 8-cyl 4WD Automatic 8-spd	5.3L 8-cyl	4WD	15	21	17	$3,740
K10 AT4 5.3L 8-cyl	5.3L 8-cyl	4WD	15	20	17	$3,740
C10 4.3L 6-cyl	4.3L 6-cyl	RWD	16	21	17	$3,740
LTD C15	5.3L 8-cyl	RWD	15	22	17	$3,750
LTD K15	5.3L 8-cyl	4WD	15	21	17	$3,790
C10 Cab Chassis 4.3L 6-cyl	4.3L 6-cyl	RWD	15	19	17	$3,840
C10 5.3L 8-cyl RWD Automatic 6-spd	5.3L 8-cyl	RWD	15	21	17	$3,850
C10 5.3L 8-cyl RWD Automatic 6-spd	5.3L 8-cyl	RWD	15	20	17	$3,880
K10 5.3L 8-cyl 4WD Automatic 6-spd	5.3L 8-cyl	4WD	15	20	17	$3,900
K10 4.3L 6-cyl	4.3L 6-cyl	4WD	15	20	17	$3,900
K10 AT4 6.2L 8-cyl	6.2L 8-cyl	4WD	15	19	17	$4,660
K10 6.2L 8-cyl	6.2L 8-cyl	4WD	15	20	17	$4,750
K10 5.3L 8-cyl 4WD Automatic 6-spd	5.3L 8-cyl	4WD	15	19	16	$4,010
C10 Cab Chassis 5.3L 8-cyl	5.3L 8-cyl	RWD	14	19	16	$4,080
K10 Cab Chassis 5.3L 8-cyl	5.3L 8-cyl	4WD	14	17	15	$4,360
K10 Cab Chassis 4.3L 6-cyl	4.3L 6-cyl	4WD	14	17	15	$4,360

2 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).

Flex-fuel (E85) configurations are costed on gasoline, not E85.

Fuel cost by state

Yearly cost of the Sierra 2.7L 4-cyl turbo RWD: $4,540 in California and $2,910 in Texas, a $1,630 difference.

California $4,540
Washington $4,210
New York $3,340
Florida $3,160
Texas $2,910

Gasoline prices: California: California state average; Washington: Washington state average; New York: New York state average; Florida: Florida state average; Texas: Texas state average (Sep 2026).

Fuel cost in every state

Similar cars

Closest combined MPG among MY2026 standard pickup models.

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20 MPG · $3,340/yr

2022 Toyota Tundra Limited CrewMax Short Bed 4x4 (XK70)

2026 Toyota Tundra

20 MPG · $3,220/yr

2026 GMC Canyon

20 MPG · $3,270/yr

2024 Ford F-150 SuperCrew Tremor (14th gen)

2026 Ford F-150

21 MPG · $3,120/yr

EPA ratings: fueleconomy.gov file of Sep 29, 2026 · Prices: EIA regular gasoline, U.S. average, Sep 2026 ($4.36/gal) · EIA residential electricity, U.S. average, Jul 2026 (18.3¢/kWh) · 15,000 mi/yr, 55% city / 45% highway · How we calculate

Generations

All GMC Sierra years All GMC models

Frequently asked questions

What gas mileage does the 2019-2026 GMC Sierra get?

EPA rates the 2019-2026 GMC Sierra at 14–26 MPG combined across 216 configurations and 8 model years. The most efficient version, the 2025 Sierra 3.0L 6-cyl turbo RWD, is rated 26 MPG (23 city, 29 highway). By powertrain: Gas: 14–21 MPG; Electric: 64–68 MPGe; Diesel: 19–26 MPG.

Which years had the best MPG in the 2019-2026 GMC Sierra?

The Sierra 3.0L 6-cyl turbo RWD reached the generation's best combined rating, 26 MPG, in 2020, 2021, 2022, 2023 and 2025. The lowest top rating, 21 MPG, was in 2019.

Did EPA ratings change during the 2019-2026 GMC Sierra?

Yes. Ratings changed in 2020, 2021, 2022, 2023, 2024, 2025 and 2026.

How does the 2019-2026 GMC Sierra compare with the previous generation?

The previous generation (2014-2018 GMC Sierra) is rated 17–20 MPG combined and costs $3,290–$4,740 a year to fuel; the 2019-2026 model is rated 14–26 MPG and costs $1,360–$5,600 a year.

How much does it cost to fuel a 2026 GMC Sierra per year?

Driving 15,000 miles a year at regular gasoline $4.36/gal (U.S. average, Sep 2026), the Sierra 2.7L 4-cyl turbo RWD costs about $3,340 a year. Across all 25 configurations the cost runs $1,360–$5,360 a year. That is a $4,000 difference between the cheapest and the costliest configuration.

How much does it cost to drive a 2026 GMC Sierra 100 miles?

About $22.27 per 100 miles for the Sierra 2.7L 4-cyl turbo RWD at regular gasoline $4.36/gal (U.S. average, Sep 2026), and between $9.07 and $35.73 across all configurations. That is the annual cost over 15,000 miles divided by 150.

How does the 2026 GMC Sierra compare with other standard pickup configurations?

The Sierra 2.7L 4-cyl turbo RWD costs about $3,340 a year to fuel, $120 less than the class median of $3,460, and less than 6 of 10 standard pickup configurations. The comparison covers all 138 rated standard pickup configurations for MY2026, not weighted by sales.

What is the range and charging cost of the 2026 GMC Sierra?

EPA rates the range at 283–410 miles depending on configuration, and the EV Ext Range (11kW Charger) 4WD goes 410 mi. Efficiency is 50–52 kWh per 100 miles (64–68 MPGe). At residential electricity 18.3¢/kWh (U.S. average, Jul 2026), charging costs $1,360–$1,440 a year, or $9.07 per 100 miles for the EV Ext Range (11kW Charger) 4WD.

Is the 2026 GMC Sierra different from the 2025 model?

The most efficient configuration moves from 26 to 25 MPG, down 1. Its annual cost goes from $3,700 to $3,730, $30 more. EPA lists 25 configurations for 2026 against 25 configurations for 2025. See the 2025 GMC Sierra for that year.