Two problems related to other fuel type engine turbo-charger have been reported for the 1999 Volkswagen Passat. The most recently reported issues are listed below.
I have a 1999 Passat wagon (@ 84,000 mile) and have had a buring oil smell for the past 18 months (it started @ 60,00 mile). It has been to a few dealers numerous times and all they ever to is replace gaskets. They have also replaced turbo charger, mas air flow, and every possible gasket. We have even had the vw rep into help solve the problem. They worked on it - said they found other gaskets - but it still burns. It is worse when it sits idle and does not happen wheh the ac is on. I just got it back from the delaer two days ago and the smell is still there - of course on their invoice they claim the smell is gone. They are such liars and all the serivce people know how to do is replace parts. I have decided to access the lemon law.
Oil filter line was routed too close around catalytic convertor. This caused it to overheat the metal oil line. Flow of oil to the turbo-charger would be stopped. Also, engine bearings burned up & turbo-charger destroyed. Took vehicle to dealership to check.