Just had my 2012 C250CDI serviced. No surprises, except front brakes. The car has done 30,000 miles, and the front disks/pads looked OK for another 5 to 10 thousand miles. However the dealer says the disk is down to the minimum (26mm), but the pads are OK, 5mm+ £423.64 to fix! Are W204 disks prone to wear fasted than pads? seems a little unusual. Anyway, I'll replace the disks/pads myself, it looks fairly straightforward.