GMC Sierra C15 MPG by year

EPA combined, city, and highway gas mileage for every GMC Sierra C15 model year.

Year	Combined	City	Highway
2018	17–20	16	23
2017	17–20	16	23
2016	17–20	16	22
2015	17–20	16	23
2014	17–20	16	22
2013	14–17	14	20
2012	14–17	14	20
2011	14–17	14	20
2010	15–17	14	20