Hi All I had my car in at an Independent Specialist today to get the Haldex unit serviced. The car is not driven overly hard and spends most of its time motorway cruising. I don't drive it like miss daisy though. It's done just over 25,000 miles now. I expected the Haldex gauze filter to have some **** on it but wasn't expecting it to be as bad as it was. I am shocked. It was absolutely choked. I am getting it done again in 15,000 miles and will adjust from there depending on how bad it is. I cannot believe that Audi do not clean this item as part of a service and at reduced mileages. This is a serious design and/or maintenance flaw that will mean many could face excessive out of warranty repair bills.