#12 Audi S4
PRICE (BASE): $45,900
SPECS: 3.9L 333hp Supercharged V6; 18 city/28 hwy
• Saving fuel was at the top of Audi's list for its '10 S4. To get its MPG up, the automaker lost two cylinders and threw on a supercharger for better low-end grunt. Luckily it didn't touch the sheet metal. The best-looking S4 ever remains the same.