I bought a diesel car two-years ago because I like the high torque/low rev style of driving and the fuel economy (54 mpg average). I now realise that this may have been a bad decision and poor purchase due to potentially high cost repairs of the particulate filter and dual mass flywheel in the not too distant future.

Do you have any advice on how I can use/drive/maintain the car to minimise the risks? I do 12,000 miles yearly of 70% under 20 miles and 30% over.