Car would not start.

I purchased a 65 plate Mazda 6 2.2D SE-L at the end of April. After a month or so, the oil filter dropped out and poured the entire contents of the engine’s oil onto the floor. The car was driven in limp mode for a few meters like this but no more, so I am hoping it has nothing to do with the problems it has now. Then a few weeks ago the car would nott start. Had RAC come out who eventually got it started but could not find a cause. They reckoned it was most likely rollback and that sufficient pressure just needed building up to push the air through.

Thursday afternoon the SCBS Malfunction light came on. This has come on before then cleared when the car was restarted, so I carried on to my destination then restarted the car thinking it would be gone. Instead, the SCBS warning remained, but was also joined by a DSC malfunction and an engine system malfunction warning light. The next day I figured I would drive my partner to work (seventy five mile round trip), and call in to the dealer in the afternoon. On the way back, the warnings were joined by a PM Accumulation in DPF warning. I thought this was weird as the car is purely used for long distance driving, and at 150 miles a day I would have thought the DPF would regularly get warm enough to burn any soot off. But I followed the car’s warning, filled it up in case it was too low to force an active regeneration, got it warm then drove up and down the motorway a good few times keeping the revs high enough. Nothing worked though, it would not regenerate and now my car has been joined by a fifth warning, DPF Malfunction.

I do not seem to be getting many trouble codes through the EOBD port. P2118 keeps coming up, but seemingly nothing about the SCBS or DSC. For one brief moment I got a trouble code of P1260, probably because the engine had not been switched on for long, and P2458, but that has now disappeared. The car has manufacturer warranty being only two years old and 47,000 miles, but they will tell me it is DPF and not covered. Any ideas what is going on here, and why suddenly the car would have a cascade of so many warnings?