X 2001 Cadillac DeVille

4.6 L, 8 cyl, Auto 4-spd, Premium Gasoline

EPA Fuel Economy

Combined: 18 MPG

City: 15 MPG

Highway: 25 MPG

Average: 22.7 MPG

Range: 20  to  28 MPG

Based on 4 vehicles

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X 2008 GMC Savana 1500 AWD Conversion (cargo)

5.3 L, 8 cyl, Auto 4-spd, Regular Gasoline or E85

EPA Fuel Economy

Regular Gasoline

Combined: 14 MPG

City: 12 MPG

Highway: 16 MPG

E85

Combined: 10 MPG

City: 9 MPG

Highway: 12 MPG