X 2003 Ford F150 Dual-fuel 4WD (LPG)

5.4 L, 8 cyl, Auto 4-spd, Regular Gasoline or Propane

EPA Fuel Economy

Regular Gasoline

Combined: 15 MPG

City: 13 MPG

Highway: 18 MPG

Propane

Combined: 11 MPG

City: 10 MPG

Highway: 14 MPG

X 2011 Kia Optima

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

MSRP: $18,995 - $25,995

EPA Fuel Economy

Combined: 26 MPG

City: 22 MPG

Highway: 34 MPG

X 2011 Lincoln MKS FWD

3.5 L, 6 cyl, Auto (S6), Regular Gasoline

MSRP: $41,500

EPA Fuel Economy

Combined: 19 MPG

City: 17 MPG

Highway: 24 MPG