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...

How do I get my DPF to regenerate?

I own a 2017 BMW 640d Coupe. It easily reaches 70 mph at 1500rpm in auto mode. I think you advise drivers to maintain 2000rpm for 15 miles or so on a dual carriageway or motorway. Should I do this in manual...

Do all diesel engines have DPF issues?

Is there a diesel car yet that can cope with town driving/short journeys without clogging the diesel particulate filter (DPF) and exhaust gas recirculation (EGR) components?