2018 GMC Sierra 15 Hybrid 2WDFuel Economy & MPG Ratings

Hybrid Standard Pickup Trucks 2WDRear-Wheel Drive

City

MPG

Highway

MPG

Combined

MPG

Trim Comparison

Automatic 8-spd

Regular Hybrid

City

Hwy

Comb

Fuel cost: $3,400/yr

Trim	Engine	City	Hwy	Combined	Fuel Cost/yr
Automatic 8-spd	Regular Hybrid	18	24	20	$3,400

Annual Fuel Cost

$3,400

Based on gasoline at $3.67/gal, 15,000 miles/year

5-Year Fuel Savings

$-5,000

vs. average new vehicle

EPA Fuel Economy Score: 4/10

GHG Score: 4/10

Environment

CO₂ Tailpipe Emissions: 447 g/mile
Annual Petroleum Consumption: 14.9 barrels

Specifications

Engine: 5.3L 8-cyl
Transmission: 8-speed Automatic
Drivetrain: RWD
Body Style: Pickup Truck
GVWR: Class 2-3 (6,001–10,000 lbs)

Source: EPA fuel economy data & NHTSA vPIC. Specifications reflect the most common trim configuration.

Engine & Efficiency Details

Source: EPA fueleconomy.gov

Engine Size: 5.3L, 8-cylinder
Induction Type: SIDI; Hybrid
Efficiency Tech: Auto Start-Stop
Fuel Type: Regular Gasoline

Annual Fuel Cost by State

Prices as of week ending May 18, 2026 · Source: EIA

National AvgEPA default

$4.490/gal$3,368/yr

California

$5.957/gal$4,468/yr

Texas

$3.888/gal$2,916/yr

Florida

$4.136/gal$3,102/yr

New York

$4.522/gal$3,392/yr

Ohio

$4.510/gal$3,383/yr

Washington

$5.591/gal$4,193/yr

Colorado

$4.618/gal$3,464/yr

Minnesota

$4.344/gal$3,258/yr

Massachusetts

$4.448/gal$3,336/yr

State	Gas Price	Annual Cost	vs. National Avg
National AvgEPA default	$4.490/gal	$3,368/yr	—
California	$5.957/gal	$4,468/yrHIGHEST	+$1,100
Texas	$3.888/gal	$2,916/yrLOWEST	$-452
Florida	$4.136/gal	$3,102/yr	$-266
New York	$4.522/gal	$3,392/yr	+$24
Ohio	$4.510/gal	$3,383/yr	+$15
Washington	$5.591/gal	$4,193/yr	+$825
Colorado	$4.618/gal	$3,464/yr	+$96
Minnesota	$4.344/gal	$3,258/yr	$-110
Massachusetts	$4.448/gal	$3,336/yr	$-32