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GMC Sierra Diesel fuel cost by year

The 2026 GMC Sierra Diesel costs about $305 per month to fuel at U.S. average prices (13,500 miles/year). Pick a model year for state-by-state costs and a calculator.

YearEfficiencyPer monthPer year
202624 MPG$305$3,664
202524 MPG$305$3,664
202424 MPG$305$3,664
202324 MPG$305$3,664
202224 MPG$305$3,664
202124 MPG$305$3,664
202024 MPG$305$3,664