Just booked our 1.5 diesel clio in for a service, the car is on a 4 year service plan with Renault, during the phone call with the service department, I was offered a DPF cleaning service for a extra £20, at the time I said no, but thinking about it later, maybe I should have said yes, even though I can add this to the service. We don't do many miles, maybe 8000 miles a year and do a 40 minute journey once a week, rest of the time is driving 6 miles on a A road from one town to the next.

I am not totally sure what Renault do to clean the DPF but I understand that you can buy additives that can be added to the diesel tank.

I guess I know the answer, which will be pay the garage the £20 for having the DPF cleaned.

The M6 is next to the garage, it maybe better giving the car a good 100 mile blast on the motorway.

Regards warranty, is a DPF covered with a 4 year warranty?

Reason why I am asking, I have had diesels before, but I never thought about or questioned about the DPF.