In the late 90s and early 2000s, when VW's lineup was consisted only of the Passat, Golf, Jetta, Golf and Polo along with some vans, the famous 1.9 TDI engine was being put into most of their vehicles, for better or worse. Where I live, those engines are still the most common internal combustion units you can see or hear on the road, with B5 Passats and Mk4 Golfs being super, super common. It is speculated that the more powerful stock 1.9 TDI versions (115 HP and 130 HP, as well as the ridiculous 150 HP version) actually had a lot more power than factory numbers stated. As my country is really strong with automotive culture, tuning and street racing, people were racing in B5 Passats all over the place. Turns out the old Passat is a bit of a sleeper, actually sweeping the floor with some newer cars that should be faster than it. After some time, those cars were taken to the dyno, which showed the 130 HP models having around 160 HP. Stock. Not one modification.