X 2003 Chevrolet Silverado 2500 2WD (Bifuel)

6.0 L, 8 cyl, Auto 4-spd, Regular Gasoline or Natural Gas

EPA Fuel Economy

Regular Gasoline

Combined: 10 MPG

City: 10 MPG

Highway: 11 MPG

Natural Gas

Combined: 10 MPG

City: 9 MPG

Highway: 11 MPG

X 2012 Chevrolet Express 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: 13 MPG

Highway: 17 MPG

E85

Combined: 10 MPG

City: 9 MPG

Highway: 12 MPG