MashGet

You don't see this very often: a car company dropping a V-8 engine from a performance car and replacing it with a V-6. But German automaker Audi does it in its 2010 S4 compact sedan.

The move not only creates a more fuel-efficient vehicle during these times of concern for the environment and oil supplies. It keeps performance because the 3-liter, double overhead cam V-6 is supercharged, has direct injection and 333 horsepower. This is just seven horses shy of the 340 horses in the V-8-powered predecessor S4.