Of course The Volkswagen Jetta. Volkswagen Jetta recently blessed with a 2.0 litre common rail diesel engine in place of the older 1.9-litre Pump Duse diesel engine.
Have a look more more details to help why to buy Volkswagen Jetta on following the links:-
http://www.carkhabri.com/carmodels/volkswagen/volkswagen-jetta
http://en.wikipedia.org/wiki/Volkswagen_Jetta