X 1998 Mercedes-Benz S600

6.0 L, 12 cyl, Auto 5-spd, Premium Gasoline

EPA Fuel Economy

Combined: 13 MPG

City: 11 MPG

Highway: 17 MPG

X 2012 Lexus IS 250/IS 250C

2.5 L, 6 cyl, Auto (S6), Premium Gasoline

MSRP: $33,795 - $42,360

EPA Fuel Economy

Combined: 25 MPG

City: 21 MPG

Highway: 30 MPG