Sticker price: $29,950
Fuel economy: 30 City / 42 Hwy
If you think that a modern diesel engine isn't hi-tech, then you're wrong. These engines are much different from the clunky, smokey, smelly engines you may be used to. And they're more efficient than gasoline engines, always have been. They also deliver a surprisingly large dose of pulling power. And in the Audi A3 TDI, you can really feel it.
NEXT: Simple cockpit