Fuel Economy - Find and Compare Cars

X 1997 GMC Sierra 2500 2WD

6.5 L, 8 cyl, Auto 4-spd, Diesel

Combined: 15 MPG

City: 14 MPG

Highway: 17 MPG

679 grams per mile

Additional CO2 emissions result from production, manufacture, and transportation of the fuel.

3.5 L, 6 cyl, Auto 4-spd, Regular Gasoline

Combined: 16 MPG

City: 14 MPG

Highway: 18 MPG

555 grams per mile

Additional CO2 emissions result from production, manufacture, and transportation of the fuel.