Are you going to a VW service place? If so, call VWoA and file a formal complaint, and visit a different dealer. The dealer is supposed to check the DPF filter at 100,000 miles - but that does not mean it needs to be replaced. There is a cleaning procedure available (if required - typically not). Even if it needed replacement (extremely rare), you are probably talking $1,000 - $1,500 - not $5,000. You are getting ripped off.
Also check your state laws on default warranties for emissions equipment.



