I bought a 1.5 TDCi fiesta 8 months ago, it is a 13 plate and still under the manufacturers warranty period.

I drive motorways daily with a round trip of 40 miles roughly, and have done over 8-9k miles so far, last night the Engine cut-out on the motorway and couldnt be restarted the AA analysed it to be a DPF related issue, ive read up and im bricking it as it could run upto £2k to replace, im hoping its covered under manufacturers warranty.

I was led to believe the self-cleaning would kick in and all would be dandy but it appears that it hasnt/no warning lights or signs to predict so.

Its been driving fine, with just this one occurance, but im skint and really dont want to be paying this sort of money to get back on the road especially as I bought the car to get away from these sort of issues.

Will it be covered under the manufacturers warranty? I know its not covered under the extended used car warranty which is due to start in 2016 rolling onto the end of my manufacturers term.

Any help apreciated. Thanks.

I drive motorways daily with a round trip of 40 miles roughly,

You are correct in that the DPF should self-clean and your typical driving pattern is the ideal scenario for it. It could well be that the dpf pressure sensor has failed and is reporting a blocked dpf when it isn't really blocked. I would be arguing with the dealer that if it IS a dpf problem then there is another fault which has caused the dpf cleaning to fail and that any repairs should be under warranty

Exhausts are generally covered under warranty unless it's damaged or corroded, broken welds etc they have to replace or repair, no reason why not at all.