EPA ratings · 2025 · GMC · Sierra
2025 GMC Sierra Fuel Economy
EPA rates the 2025 GMC Sierra's 25 trims from 15 to 64 MPGe combined, Sierra 4WD AT4X to Sierra EV. Electric and plug-in trims show MPGe and kWh per 100 miles. The table below prices every trim per mile at a fuel price and mileage you can change.
EPA ratings by trim
| Trim | Engine | Transmission | Drive | City | Hwy | Combined | kWh/100 mi | Electric range |
|---|---|---|---|---|---|---|---|---|
| Sierra 2WD · Diesel | 3 L, 6 cyl | Automatic 10-spd | Rear-Wheel Drive | 23 | 29 | 26 MPG | — | — |
| Sierra 2WD · Regular | 2.7 L, 4 cyl | Automatic 8-spd | Rear-Wheel Drive | 18 | 21 | 19 MPG | — | — |
| Sierra 2WD · Regular | 2.7 L, 4 cyl | Automatic 8-spd | Rear-Wheel Drive | 17 | 21 | 19 MPG | — | — |
| Sierra 2WD · Regular | 5.3 L, 8 cyl | Automatic 10-spd | Rear-Wheel Drive | 16 | 21 | 18 MPG | — | — |
| Sierra 2WD · Regular | 5.3 L, 8 cyl | Automatic 10-spd | Rear-Wheel Drive | 16 | 20 | 17 MPG | — | — |
| Sierra 4WD · Diesel | 3 L, 6 cyl | Automatic 10-spd | 4-Wheel Drive | 22 | 26 | 24 MPG | — | — |
| Sierra 4WD · Regular | 2.7 L, 4 cyl | Automatic 8-spd | 4-Wheel Drive | 17 | 18 | 17 MPG | — | — |
| Sierra 4WD · Regular | 2.7 L, 4 cyl | Automatic 8-spd | 4-Wheel Drive | 17 | 19 | 18 MPG | — | — |
| Sierra 4WD · Gasoline or E85 | 5.3 L, 8 cyl, FFV | Automatic 10-spd | 4-Wheel Drive | 15 | 19 | 17 MPG | — | — |
| Sierra 4WD · Premium | 6.2 L, 8 cyl | Automatic 10-spd | 4-Wheel Drive | 15 | 19 | 16 MPG | — | — |
| Sierra 4WD · Regular | 5.3 L, 8 cyl | Automatic 10-spd | 4-Wheel Drive | 15 | 19 | 16 MPG | — | — |
| Sierra 4WD · Regular | 5.3 L, 8 cyl | Automatic 10-spd | 4-Wheel Drive | 15 | 19 | 17 MPG | — | — |
| Sierra 4WD · Regular | 5.3 L, 8 cyl | Automatic 10-spd | 4-Wheel Drive | 15 | 19 | 17 MPG | — | — |
| Sierra 4WD AT4X · Diesel | 3 L, 6 cyl | Automatic 10-spd | 4-Wheel Drive | 19 | 20 | 19 MPG | — | — |
| Sierra 4WD AT4X · Premium | 6.2 L, 8 cyl | Automatic 10-spd | 4-Wheel Drive | 14 | 16 | 15 MPG | — | — |
| Sierra Cab Chassis 2WD · Regular | 5.3 L, 8 cyl | Automatic 10-spd | Rear-Wheel Drive | 15 | 18 | 16 MPG | — | — |
| Sierra Cab Chassis 4WD · Regular | 5.3 L, 8 cyl | Automatic 10-spd | 4-Wheel Drive | 14 | 16 | 15 MPG | — | — |
| Sierra EV · Electricity | Electric | Automatic (A1) | 4-Wheel Drive | 70 | 59 | 64 MPGe | 52.4 | 390 mi |
| Sierra Mud Terrain Tires 4WD · Diesel | 3 L, 6 cyl | Automatic 10-spd | 4-Wheel Drive | 21 | 24 | 23 MPG | — | — |
| Sierra Mud Terrain Tires 4WD · Regular | 2.7 L, 4 cyl | Automatic 8-spd | 4-Wheel Drive | 16 | 17 | 16 MPG | — | — |
| Sierra Mud Terrain Tires 4WD · Gasoline or E85 | 5.3 L, 8 cyl, FFV | Automatic 10-spd | 4-Wheel Drive | 15 | 19 | 17 MPG | — | — |
| Sierra Mud Terrain Tires 4WD · Premium | 6.2 L, 8 cyl | Automatic 10-spd | 4-Wheel Drive | 14 | 17 | 15 MPG | — | — |
| Sierra Mud Terrain Tires 4WD · Regular | 5.3 L, 8 cyl | Automatic 10-spd | 4-Wheel Drive | 15 | 19 | 16 MPG | — | — |
| Sierra Mud Terrain Tires 4WD · Regular | 5.3 L, 8 cyl | Automatic 10-spd | 4-Wheel Drive | 15 | 18 | 16 MPG | — | — |
| Sierra Mud Terrain Tires 4WD · Regular | 5.3 L, 8 cyl | Automatic 10-spd | 4-Wheel Drive | 15 | 18 | 16 MPG | — | — |
City and highway are EPA's adjusted label figures; combined is the 55/45 blend printed on the window sticker. For electric and plug-in trims the MPG columns are MPGe, and the kWh per 100 miles is the figure a charging cost actually turns on; EPA measures it at the wall, so charging losses are already in it. Unrounded combined figures, where EPA publishes them: Sierra 2WD 25.5092; Sierra 2WD 18.9645; Sierra 2WD 18.8866; Sierra 2WD 18.1026; Sierra 2WD 17.4927; Sierra 4WD 23.7202; Sierra 4WD 17.2387; Sierra 4WD 17.9125; Sierra 4WD 16.936; Sierra 4WD 16.4913; Sierra 4WD 16.2621; Sierra 4WD 16.8619; Sierra 4WD 16.6009; Sierra 4WD AT4X 19.4173; Sierra 4WD AT4X 15.4546; Sierra Cab Chassis 2WD 16.0857; Sierra Cab Chassis 4WD 15.2933; Sierra EV 64.3686; Sierra Mud Terrain Tires 4WD 22.6039; Sierra Mud Terrain Tires 4WD 16.4797; Sierra Mud Terrain Tires 4WD 16.936; Sierra Mud Terrain Tires 4WD 15; Sierra Mud Terrain Tires 4WD 16.2621; Sierra Mud Terrain Tires 4WD 16.1356; Sierra Mud Terrain Tires 4WD 16.0271.
What the rating costs per mile
The rating divided by a price, times your miles. It starts at EIA's current U.S. averages and EPA's 15,000 miles so the right-hand column is comparable; type your own pump price, home rate and mileage over them.
| Trim | Runs on | Rated | Per mile | Per year | EPA's figure |
|---|---|---|---|---|---|
| Sierra 2WD | Diesel | 26 MPG | 16.5¢ | $2,472 | $3,700 |
| Sierra 2WD | Regular Gasoline | 19 MPG | 22.5¢ | $3,382 | $3,550 |
| Sierra 2WD | Regular Gasoline | 19 MPG | 22.5¢ | $3,382 | $3,550 |
| Sierra 2WD | Regular Gasoline | 18 MPG | 23.8¢ | $3,570 | $3,700 |
| Sierra 2WD | Regular Gasoline | 17 MPG | 25.2¢ | $3,780 | $3,950 |
| Sierra 4WD | Diesel | 24 MPG | 17.8¢ | $2,678 | $4,000 |
| Sierra 4WD | Regular Gasoline | 17 MPG | 25.2¢ | $3,780 | $3,950 |
| Sierra 4WD | Regular Gasoline | 18 MPG | 23.8¢ | $3,570 | $3,700 |
| Sierra 4WD | Regular Gasoline | 17 MPG | 25.2¢ | $3,780 | $3,950 |
| Sierra 4WD | Premium Gasoline | 16 MPG | 26.8¢ | $4,016 | $5,150 |
| Sierra 4WD | Regular Gasoline | 16 MPG | 26.8¢ | $4,016 | $4,200 |
| Sierra 4WD | Regular Gasoline | 17 MPG | 25.2¢ | $3,780 | $3,950 |
| Sierra 4WD | Regular Gasoline | 17 MPG | 25.2¢ | $3,780 | $3,950 |
| Sierra 4WD AT4X | Diesel | 19 MPG | 22.5¢ | $3,382 | $5,050 |
| Sierra 4WD AT4X | Premium Gasoline | 15 MPG | 28.6¢ | $4,284 | $5,500 |
| Sierra Cab Chassis 2WD | Regular Gasoline | 16 MPG | 26.8¢ | $4,016 | $4,200 |
| Sierra Cab Chassis 4WD | Regular Gasoline | 15 MPG | 28.6¢ | $4,284 | $4,450 |
| Sierra EV | Electricity | 52.3625 kWh/100 mi | 9.5¢ | $1,426 | $1,200 |
| Sierra Mud Terrain Tires 4WD | Diesel | 23 MPG | 18.6¢ | $2,794 | $4,150 |
| Sierra Mud Terrain Tires 4WD | Regular Gasoline | 16 MPG | 26.8¢ | $4,016 | $4,200 |
| Sierra Mud Terrain Tires 4WD | Regular Gasoline | 17 MPG | 25.2¢ | $3,780 | $3,950 |
| Sierra Mud Terrain Tires 4WD | Premium Gasoline | 15 MPG | 28.6¢ | $4,284 | $5,500 |
| Sierra Mud Terrain Tires 4WD | Regular Gasoline | 16 MPG | 26.8¢ | $4,016 | $4,200 |
| Sierra Mud Terrain Tires 4WD | Regular Gasoline | 16 MPG | 26.8¢ | $4,016 | $4,200 |
| Sierra Mud Terrain Tires 4WD | Regular Gasoline | 16 MPG | 26.8¢ | $4,016 | $4,200 |
Per mile = price ÷ rated MPG (gasoline) or price per kWh × kWh per 100 miles ÷ 100 (electricity). Per year = per mile × miles. EPA's figure is its own annual fuel cost at 15,000 miles, 55% city, and the national price in force when the file was built; it will differ from the middle columns whenever the price here differs. A plug-in hybrid is shown once on each fuel; its real cost sits between them, by how much of its driving is on the battery.
Fuel only — before depreciation, insurance, maintenance or tires, which the True Cost per Mile Calculator adds. Most drivers land below the rating; the True MPG Calculator measures your own from two fill-ups. The EV vs. Gas Cost Calculator sets the electric trim against a gasoline one over a year.
EPA's own figures, and why they differ
The “EPA's figure” column is EPA's annual fuel cost from the same file: 15,000 miles, 55% city, and the national fuel price fueleconomy.gov was using on the day the file was built (2026-09-29). fueleconomy.gov recomputes its page every week at the current price, so its number and the file's drift apart between file dates; the middle columns here use a price you can see and change, which is the only honest way to compare two cars. EPA also prints a five-year “you save/spend” against the average new vehicle (saves $6,000 for the Sierra EV); it rests on the same assumptions and is not repeated here as a result.
Every figure on this page is a rating, not a measurement of any particular car. The site never calls a rating wrong; it shows what your own price and miles do to it. See the model on fueleconomy.gov.
Other model years of the GMC Sierra: 2026, 2024, 2023, 2022, 2021, 2020, 2019, 2018, 2017, 2016, 2015, 2014, 2013, 2012, 2011, 2010, 2009, 2008, 2007, 2006, 2005, 2004, 2003, 2002, 2001, 2000, 1999, 1998, 1997, 1996, 1995, 1994, 1993, 1992, 1991, 1990, 1989.
Related tools
Price the same miles on gasoline and on electricity, using your fuel price, your utility rate, and each car's rated efficiency.
Open tool →True MPG CalculatorYour car's real fuel economy from two odometer readings and a fill-up — and how far it falls from its EPA rating.
Open tool →Commute Cost CalculatorWhat getting to work costs per day, per month, and per year — energy only, or all-in at the IRS standard mileage rate.
Open tool →Gas Prices by Region and StateThis week's average price of regular gasoline for the U.S., every state and ten cities, from EIA's weekly survey — a dated figure to start from, never one assumed for you.
Open tool →Electricity Prices by StateThe average residential price of electricity in every state, by month, from EIA's utility filings — and what each rate does to a mile in an electric car.
Open tool →Informational only — published averages for scale and comparison, not a quote for any pump, utility or vehicle. Your own price is the one that counts, and every calculator on this site takes it as an input.
Ratings: U.S. EPA and U.S. DOE, fueleconomy.gov vehicles.csv dated 2026-09-29 (EPA record ids 48204, 48205, 48206, 48207, 48208, 48229, 48232, 48233, 48235, 48237, 48240, 48242, 48244, 48231, 48239, 48250, 48251, 48709, 48230, 48234, 48236, 48238, 48241, 48243, 48245). Prices: EIA, U.S. regular gasoline week of October 19, 2026; U.S. residential electricity August 2026. Snapshots refreshed monthly.