One problem related to manifold/header/muffler/tail pipe has been reported for the 2006 Volkswagen Jetta. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2006 Volkswagen Jetta based on all problems reported for the 2006 Jetta.
Camshaft failure due to excessive wear on a vehicle with 160,000 miles despite using vw recommended 505. 01 specification oil and regular maintenance. Engine developed a rattling noise at highway speed, decreased performance, excessive black smoke coming out of tail pipe, and $1500 repair bill. Dual mass transmission flywheel failure on a vehicle with 120,000 miles resulted in rattling noise in the transmission, vibration of the whole vehicle and $1200 repair bill. Both of these issues are widespread. Multiple owners of this year/make/model have experienced these exact same issues due to poor quality parts originally installed by the manufacturer. Manufacturer should recall the affected vehicles and fix these issues due to them being widespread. There are numerous discussions on public forums of these issues as well.