X 2004 Honda Civic CNG

1.7 L, 4 cyl, Auto (variable gear ratios), Natural Gas

EPA Fuel Economy

Combined: 28 MPG

City: 26 MPG

Highway: 31 MPG

X 1991 Ford F150 Pickup 4WD

5.0 L, 8 cyl, Auto 4-spd, Regular Gasoline

EPA Fuel Economy

Combined: 13 MPG

City: 12 MPG

Highway: 16 MPG