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- MY2000–2026
GMC Sierra MPG & Fuel Cost by Year
27 model years · 2000–2026
15,000 mi/yr · regular gasoline $4.36/gal (U.S. average, Sep 2026)
GMC Sierra fuel economy at a glance
EPA has rated the GMC Sierra for 27 model years, 2000 to 2026. Across those years its combined rating runs 11–26 MPG. The latest model year, 2026, has 25 configurations rated 15–25 MPG, 64–68 MPGe combined and costing $1,360–$5,360 a year to fuel at diesel $6.29/gal (U.S. average, Sep 2026). The most efficient configuration on record since 2000 is the 2025 Sierra 3.0L 6-cyl turbo RWD, at 26 MPG. EPA ratings go back to 1984: the earliest rating on this page is 19 MPG in 1989.
GMC Sierra MPG by year
| Year | Gas (MPG) | Hybrid (MPG) | Diesel (MPG) | Electric (MPGe) | Natural gas (MPGe) | $/yr |
|---|---|---|---|---|---|---|
| 2019-2026 (T1XX) Generation page | ||||||
| 2026 | 15–20 | — | 19–25 | 64–68 | — | $1,360–$5,360 |
| 2025 | 15–19 | — | 19–26 | 64 | — | $1,440–$5,360 |
| 2024 | 15–20 | — | 19–25 | — | — | $3,310–$5,360 |
| 2023 | 15–20 | — | 22–26 | — | — | $3,290–$5,300 |
| 2022 | 14–20 | — | 21–26 | — | — | $3,240–$5,600 |
| 2021 | 14–21 | — | 24–26 | — | — | $3,100–$5,020 |
| 2020 | 15–21 | — | 24–26 | — | — | $3,100–$4,750 |
| 2019 | 15–21 | — | — | — | — | $3,100–$4,750 |
| 2014-2018 (K2XX) Generation page | ||||||
| 2018 | 17–20 | 18–20 | — | — | — | $3,290–$4,740 |
| 2017 | 17–20 | 18–20 | — | — | — | $3,290–$3,920 |
| 2016 | 17–20 | 18–20 | — | — | — | $3,290–$3,840 |
| 2015 | 17–20 | — | — | — | — | $3,290–$3,840 |
| 2014 | 17–20 | — | — | — | — | $3,300–$3,940 |
| 2007-2013 (2nd gen) Generation page | ||||||
| 2013 | 14–18 | 21 | — | — | — | $3,100–$4,610 |
| 2012 | 14–18 | 21 | — | — | — | $3,100–$4,610 |
| 2011 | 14–18 | 21 | — | — | — | $3,100–$4,610 |
| 2010 | 14–18 | 21–22 | — | — | — | $2,970–$4,670 |
| 2009 | 14–17 | 20–21 | — | — | — | $3,110–$4,670 |
| 2008 | 14–17 | — | — | — | — | $3,840–$5,740 |
| 2007 | 14–17 | 16–17 | — | — | — | $3,840–$5,740 |
| 2000-2006 (1st gen) Generation page | ||||||
| 2006 | 13–17 | 16–17 | — | — | — | $3,840–$6,180 |
| 2005 | 11–17 | 16–17 | — | — | 9 | $3,840–$5,940 |
| 2004 | 13–16 | 16–17 | — | — | — | $3,840–$5,030 |
| 2003 | 13–16 | — | — | — | — | $4,080–$5,030 |
| 2002 | 12–16 | — | — | — | — | $4,080–$5,440 |
| 2001 | 11–17 | — | — | — | — | $3,840–$5,940 |
| 2000 | 12–18 | — | — | — | — | $3,630–$5,440 |
Costs use the current EIA price set and 15,000 miles a year for every year, so years are comparable. Green marks the best year for each powertrain.
GMC Sierra generations
4 generations between 2000 and 2026. Open one for the table of every model year and configuration.
2026 powertrain options
EPA range 283–410 miles.
See electric configurationsGMC Sierra MPG history, 1989–1999
| Year | Gas (MPG) | Diesel (MPG) |
|---|---|---|
| 1999 | 12–17 | — |
| 1998 | 13–18 | 15 |
| 1997 | 13–18 | 15 |
| 1996 | 13–18 | 15–16 |
| 1995 | 12–17 | 14–19 |
| 1994 | 12–18 | 15–19 |
| 1993 | 12–17 | 17–18 |
| 1992 | 12–18 | 17–20 |
Show 3 more years
| Year | Gas (MPG) | Diesel (MPG) |
|---|---|---|
| 1991 | 12–17 | 16–20 |
| 1990 | 12–18 | 16–18 |
| 1989 | 12–18 | 16–19 |
EPA re-estimated the ratings of pre-2008 vehicles under its 2008 method; these are the re-estimated values.
More GMC models
Frequently asked questions
What is the GMC Sierra's gas mileage by year?
EPA combined ratings for the GMC Sierra run 11–26 MPG across model years 2000 to 2026. The latest year, 2026, is rated 15–25 MPG.
Which GMC Sierra model year has the best gas mileage?
The 2025 GMC Sierra Sierra 3.0L 6-cyl turbo RWD has the highest combined rating since 2000, at 26 MPG.
How much does a GMC Sierra cost to fuel per year?
For MY2026, EPA-rated configurations cost $1,360–$5,360 a year to fuel, driving 15,000 miles at diesel $6.29/gal (U.S. average, Sep 2026). The most efficient one costs $3,730.
Has the GMC Sierra's fuel economy improved over time?
Yes. The most efficient configuration moved from 18 MPG in 2000 to 25 MPG in 2026, 7 MPG more. Going back further, the best rating in 1984 was 19 MPG.
Is there a hybrid, plug-in or electric GMC Sierra?
Yes. Hybrid versions are rated from 2004 to 2018 (16–22 MPG); Electric versions are rated from 2025 to 2026 (64–68 MPGe).