VOLKSWAGEN JETTA

Most of the technology in the Volkswagen Jetta TDI is under the hood, not inside the passenger compartment. This vehicle uses a unique clean diesel engine for the best fuel economy on the road (about 44 mpg) for a non-hybrid sedan. The engine uses an electronically controlled turbo charger and a fuel injection system that more accurately directs fuel to the engine than other vehicles. The exhaust system is so advanced and precisely controlled it is hard to even see the exhaust in the tailpipe