Latest Luxury Vehicles

Want impressive fuel economy, but you're reluctant to give up prestigious, high-end luxury? Three upscale performance business sedans with different energy sources fit the bill: the Mercedes-Benz E320 Bluetec, which runs on the world's cleanest diesel; the Lexus LS 600h L, the world's first full hybrid V-8 powered by a gasoline/electric motor; and the BMW 530i, with a standard gasoline engine and mileage comparable to some hybrids.

The 2007 E320 Bluetec is another addition to Mercedes-Benz's domination of diesel-powered vehicles. Its most fuel-efficient to date, the E320's quiet 3.0-liter V-6 clean-burning turbo diesel engine has the economy of a four-cylinder and the forceful torque of a V-8, producing 208 horsepower. With ultra-low sulphur diesel fuel in its 21.1 gallon tank, Mercedes-Benz claims the four-door sedan delivers approximately 26 mpg city/ 37 mpg highway to travel an estimated 780 miles on one tank of fuel. A caveat: The sedan doesn't meet emissions standards in California, Maine, Massachusetts, New York and Vermont.