My passat b6 has the engine code BLS. now i thought this was a 1.9 engine. However when i checked online when my tax was due it states the capacity at 1968cc. This also matches up with the capacity listed on the service history from agnews meaning by my reckoning that the car has a 2.0litre tdi engine. I thought for an engine to be 1.9 that the cc had to be below 1900cc? or have i got this totally wrong?