Engine damage after 59,500 km, 50 days after expiry of warranty

I would like to address you today because there have been massive problems with my vehicle above: The vehicle is currently in repair at the DRESEN car dealership, one of the largest car dealerships in Neuss near Düsseldorf, among other things because of an obvious engine damage at a current mileage of 59,500 km, i.e. less than 60,000 km. The vehicle was last inspected on 19 December 2012 at a km stand of 36,639, the inspection was carried out within the advance 24 months after EZ. The inspection was registered at a km stand of 35,401 on December 7, 2012. This was because I was very tense and very busy in 2012 within Germany. On this occasion I also had original KIA winter tyres mounted on rim on December 7, 2012 I was not informed, however, that in case of a possible later damage the KIA 7-year yarn can be omitted if an inspection is not possible. I am not aware of how and where the vehicle was supposed to have lost cooling water, nor was the vehicle too much strained, so that there might have been a possible overheating of the engine. Now, most likely, the head seal should be defective, further damage cannot be ruled out, since the engine had not yet been completely disassembled (as of Friday, 27.9.2013 at 8:30 am). The vehicle was towed by the ADAC on behalf of the KIA emergency call centre on Sunday 22 September 2013. I don’t know why, where and how water loss occurred. There were no abnormalities, everything in the normal range, no loss in torque or similar, no warning about too high water temperature or other control lights. The KIA contract workshop also has no explanation for this. As it currently looks like, I have the damage of around € 2,000 on the cheek. I would like to ask you to take care of the matter once, an application for guarantee receipt was commissioned by the dealer, as well as of course the 60,000-km inspection.