We purchased our '01 Beetle TDI for the sole purpose of wanting a car that was great on fuel and have been relatively happy with it. It's by no means a luxury car. It's loud on the highway, but great on gas. We average mid-upper 30s in the city and upper 40s on the highway. We did manage to squeeze out 54 mpg on the way out to Nevada last summer. I would recommend this car for the econo minded person.
Great fuel mileage!
Cup holders - what were they thinking? More comfortable seats. 5 speed auto transmission. More sound insulation. Better electrical system. The funky door locks are odd. The ever-so-popular "peeling" door handles.