I've had a Seat Ateca for just over a year (registered April 2017) and noticed a juddering when braking. My local garage had a look and said there was some rust on the discs so I took it to the dealer who confirmed this. I said that this should not have happened after only 15,000 miles so they showed me the discs. It was not just rust but deep pits and the surface layer was peeling off. As well as the large (50 pence piece sized) pits, there were a lot of smaller pits which were leading to further separation of the surface layer. The dealer refused to fix this under warranty so I had to pay the full amount. The car is parked outside but is used daily on trips usually of around 5 to 10 miles with some longer journies. Has anyone else seen this or is it a rogue batch of brake disks?