Mine is ARZ I believe
Here is the breakdown... for info, it occured at 60K
Symptoms were a sticking clutch - car roadtested and found it requires a new pressure plate, clutch plate and flywheel..
Flywheel 598.40 - total bill 1066..... also included a service.
BTW, if you bought from anyone in the trade, paid a decent price and assuming the mileage isn't massive, you should get them to fix or a major reduction. Sale of Goods act. If it is on finance, you can claim against the finance comp