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2026 GMC Sierra 1500 mpg

Combined mpg, Pro Regular Cab RWD

20mpg

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12,000 miles a year. Gas $3.20.

020406080100Median 21Sierra 1500: 20 mpg
16 trucks (2026), one trim per model: the cheapest with a rating. Median 21 mpg.
2026 GMC Sierra 1500 mpg by trim
TrimEngineDriveCity mpgHwy mpgCombinedTank, galMiles per tankCost a year
Crew Cab AT4 4WD3.0L 6cyl4WD22262424.0576$1,600
AT4 Crew Cab LB 4WD3.0L4WD22262424.0576$1,600
Pro Regular Cab RWD2.7LRWD18212024.0480$1,920
2WD Reg Cab 140" Pro2.7L2WD18212028.0560$1,920
Pro Double Cab RWD2.7LRWD18212024.0480$1,920
Pro Crew Cab RWD2.7LRWD18212024.0480$1,920
SLE Double Cab RWD2.7LRWD18212024.0480$1,920
Elevation Double Cab RWD2.7LRWD18212024.0480$1,920
SLE Crew Cab RWD2.7LRWD18212024.0480$1,920
Elevation Crew Cab RWD2.7LRWD18212024.0480$1,920
Crew Cab AT4X 4WD3.0L 6cyl4WD19201924.0456$2,021
Regular Cab Pro 4WD2.7L 4cyl4WD17201824.0432$2,133
4WD Reg Cab 140" Pro2.7L4WD17201828.0504$2,133
Double Cab Pro 4WD2.7L 4cyl4WD17201824.0432$2,133
Crew Cab Pro 4WD2.7L 4cyl4WD17201824.0432$2,133
Pro Crew Cab LB 4WD2.7L4WD17201824.0432$2,133
Double Cab SLE 4WD2.7L 4cyl4WD17201824.0432$2,133
Double Cab Elevation 4WD2.7L 4cyl4WD17201824.0432$2,133
Crew Cab SLE 4WD2.7L 4cyl4WD17201824.0432$2,133
SLE Crew Cab LB 4WD2.7L4WD17201824.0432$2,133
Elevation Crew Cab LB 4WD2.7L4WD17201824.0432$2,133
4WD Crew Cab 147" Elevation w/3SB2.7L4WD17201824.0432$2,133
4WD Crew Cab 147" Elevation w/3VL2.7L4WD17201824.0432$2,133
4WD Double Cab 147" Elevation w/3SB2.7L4WD17201824.0432$2,133
4WD Double Cab 147" Elevation w/3VL2.7L4WD17201824.0432$2,133
Crew Cab Elevation 4WD2.7L 4cyl4WD17201824.0432$2,133
SLT Crew Cab RWD5.3LRWD16201724.0408$2,259
Denali Crew Cab RWD5.3LRWD16201724.0408$2,259
Crew Cab SLT 4WD5.3L 8cyl4WD15181624.0384$2,400
SLT Crew Cab LB 4WD5.3L4WD15181624.0384$2,400
Crew Cab Denali 4WD5.3L 8cyl4WD15181624.0384$2,400
Denali Crew Cab LB 4WD5.3L4WD15181624.0384$2,400
Crew Cab Denali Ultimate 4WD6.2L 8cyl4WD15191624.0384$2,400

Fuel cost

Pro Regular Cab RWD, 20 mpg combined.

Per year
$1,920
Per month
$160
Per mile
16.0 cents
Fill the tank
$76.80
  • Best mpg: Crew Cab AT4 4WD, 24 mpg. $1,600 a year.
  • Top trim: Crew Cab Denali Ultimate 4WD. $2,400 a year. $480 more than the Pro Regular Cab RWD.

Trip cost

Pro Regular Cab RWD: 21 mpg highway
TripGallonsCost
100 miles4.8$15.24
300 miles14.3$45.71
500 miles23.8$76.19
1,000 miles47.6$152

Commute cost

Per month
$139
Per year
$1,664
Miles a month
867

Pro Regular Cab RWD. 20 miles each way, 5 days a week.

Is 20 mpg good? No. Beats 22% of 2026 cars.

MPG by year

16171819202009201220152018202120242026
Sierra 1500: combined mpg of the cheapest rated trim, 2009 to 2026.

Sierra 1500 by year: price, hp, mpg, size

Rivals

2026 GMC Sierra 1500 and rivals
CarCheapest trimCombined mpgCompare
2026 GMC Sierra 1500Pro Regular Cab RWD20 mpg
2026 Ford F-150XL 2WD Reg Cab 8' Box21 mpgCompare
2026 Chevrolet Silverado 1500Work Truck Regular Cab RWD20 mpgCompare
2026 RAM 1500Express Quad Cab RWD22 mpgCompare
2026 GMC Canyon2WD Crew Cab Elevation20 mpgCompare
2026 Toyota TundraSR Double Cab RWD20 mpgCompare
2026 Jeep GladiatorSport Crew Cab 4WD19 mpgCompare

What this cannot tell you

EPA ratings. Your own mpg will differ.

Gas prices change by state and by week.

How values are checked