I too, after 3 1/2 years of Forester ownership, have decided that enough is enough. We have had issues with the air con condenser, replaced under warranty after pointing out posts on this forum, 3 visits to the dealer to have a creaking rear door strut replaced, and the final nail in the coffin has been repeated dilution of the oil due to failed regeneration attempts. My main concern throughout has been the poor service received from the Eaglesham based dealer. The rear door strut was only replaced after I formally complained to Subaru UK about the lack of service I was receiving.
I have since found a more local dealer whose service has been second to none, has convinced me to stay with Subaru ( awaiting delivery of an XV ), and advised that the diesel Forester that we had should never have been sold to us due to the low milage we do. The last point was most annoying as the salesman who sold the car to us was well aware that the 3 year old Yeti we traded in had done only 21k miles since new.
We are really dissapointed in having to change the Forester as it has been a great, and on the whole reliable vehicle. I'm sure that had we been advised to purchase a petrol version I would not be changing the car at this time.
Hopefullystaying loyal to Subaru will be a decision I dont live to regret!