2012 Clean Diesel Cars
2012 Volkswagen Passat
$1,669 annual fuel cost
Clean diesel cars have been increasingly popular. Though diesel costs more and pollutes more than gasoline, high fuel-efficiency makes up for some of both demerits. The 2012 Volkswagen Passat leads the pack of clean diesel cars, but the Audi 3 ($30,250), VW Golf ($23,955) and VW Jetta ($22,525) all rank just behind it at 34 MPG.
> Related: 9 Facts and Myths about Clean Diesel Cars