My Passat diesel's fan stays on after I switch off the engine - is this related to the DPF?

I have a Passat Estate diesel and have read your comments regarding the problems of the DPF. On a couple of occasions recently the engine fan has continued to run after a short journey. Since then I have...

What's the most effective way to clear a DPF?

Motoring magazines often refer to taking the car for a fast run to clear the DPF. Surely a better way would be to drive in 4th or 5th gear with increased revs but slower speed since it is the increase...

How can I fix DPF issues?

My wife has a 2014 Mazda CX-5 with 80k on clock. We have Been advised by a garage that the DPF is more or less knackered and causing turbo failure. One garage advises a DPF delete but another said not...