Hope someone can help me, my DPF light has come on again and has been on now 4 times in around 6 weeks!!!! I regenerated the DPF through vcds on Friday afternoon and got it down to 0% and have only done around 45 miles since then and now the DPF light is back on again??? It's really starting to p**s me off and aam not thinking about selling the car. Does anyone have any idea what could be causing this to happen so often? I do mostly town driving but even so should it be coming on this regular?? Also I put Â£20 of diesel in on Friday and i only done 65 miles and then it was reading 0 miles left, surely this can't be right??? Forgot to mention the car is an 2007 A4 2.0 TDI Black Edition. Any help would be really appreciated.