Just bypass the dpf if it has an issue, just another way for manufacturers to keep squeezing money from you. I Don't use fuel from supermarkets as that will f**k your motor up in no time at all. Took wife's motor to garage as it was playing up, told me Dpf was 75% blocked cars only done 100,000 miles, 1500 plus for new filter or 300 for new ecu and bypass it, they are making new cars and you be lucky if they last you 8/10yrs, they want us all driving electric and following like sheep.