What is the issue with the particulate filter in the Tiguan L?

[EllieAnn]

Because the particulate filter is prone to clogging, which leads to poor exhaust flow and consequently increased fuel consumption. The function of the particulate filter: The particulate filter can reduce the soot produced by diesel engines by more than 90%, and the captured particulate emissions are subsequently burned off during vehicle operation. The principle of the particulate filter: The diesel particulate filter is coated with metals such as platinum, rhodium, and palladium. The black smoke containing carbon particles emitted by the diesel engine enters the exhaust particulate filter through a dedicated pipeline. Inside, a densely arranged bag-type filter captures the carbon soot particles on a metal fiber felt filter. When the accumulation of particles reaches a certain level, the burner at the end automatically ignites, burning off the captured carbon soot particles and converting them into harmless carbon dioxide for emission.