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Mazda 6 has DPF problem - should the dealer pay for the repairs?

I bought a Mazda 6 (2006) from a used car garage in November 2013. Immediately after collecting the car there was a problem with it which, I brought to the dealers attention in January. It turned out to be the DPF filter. I have six months warranty with a £150 limit, but I’m not sure as to what extent I would need to pay towards a new DPF filter?

The car was clearly sold knowingly with this problem and therefore not fit for purpose; therefore I am sure that the dealer needs to pay the whole amount (roughly £650). What do you think?

Asked on 12 February 2014 by b3n124

Answered by Honest John
If you have used the car for repeated short runs from cold it's down to you for not using the car correctly.

You could try a bottle of Cataclean. If that doesn't work, a treatment using the Ceramex or Terraclean process.

But if you have been using the car normally, then it's safe to assume that the DPF problem was developing when you bought the car and you can demand that the supplying dealer fixes it. Legally. He cannot legally remove it.

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