GMC Sierra MPG by model year

Combined EPA ratings for each GMC Sierra model year. Years with identical ratings are grouped together.

Model year	Combined MPG	Best hwy	Versions
2026	15–25 MPG 64–68 MPGe (electric)	28	25
2025	15–26 MPG 64 MPGe (electric)	29	23
2024	15–25 MPG	29	25
2023	15–26 MPG	29	21
2022	14–26 MPG	30	28
2021	14–26 MPG	30	35
2020	15–26 MPG	30	25
2019	15–21 MPG	24	22
2018	17–20 MPG	24	14
2017	17–20 MPG	24	14
2016	17–20 MPG	24	14
2015	17–20 MPG	24	14
2014	17–20 MPG	23	6
2013	14–21 MPG	23	12
2012	14–21 MPG	23	12
2011	14–21 MPG	23	12
2010	14–22 MPG	22	12
2009	14–21 MPG	22	20
2008	14–17 MPG	20	12
2007	14–17 MPG	21	27
2006	13–17 MPG	20	17
2005	9–17 MPG	20	19
2004	13–17 MPG	19	16
2003	13–16 MPG	19	13
2002	12–16 MPG	19	12
2001	11–17 MPG	20	11
2000	12–18 MPG	21	12

Model years before 2005 are listed for reference without a separate page.

Source: U.S. Environmental Protection Agency and U.S. Department of Energy, fueleconomy.gov. Original data (downloaded 2026-09-29). Data processed by us; errors in processing are ours, not the publisher's.