X 2009 Chevrolet Tahoe 1500 4WD

5.3 L, 8 cyl, Auto 6-spd, Regular Gasoline or E85

EPA Fuel Economy

Regular Gasoline

Combined: 16 MPG

City: 14 MPG

Highway: 20 MPG

E85

Combined: 12 MPG

City: 10 MPG

Highway: 15 MPG

Average: 18.1 MPG

Range: 18  to  18 MPG

Based on 2 vehicles

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X 2001 GMC Sierra 1500 2WD

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

EPA Fuel Economy

Combined: 17 MPG

City: 15 MPG

Highway: 20 MPG