Hello, After the Mazda 6 did not have any problems so far, I get back to you. Why ? Exactly one day before my holiday last week the engine said goodbye with a loud clapping. Mazda said that I should come to the workshop, they would look at it. On the way there exactly 20 meters before the car dealership nothing went out. Engine and does not want to start anymore. What happened ? After the workshop looked closer the car (there was too much oil in the oil tank , large metal chips were also included, and the engine made tilt motions of perhaps 6-7 cm) the engine was removed and disassembled this week. Originally they hoped for a skipping of the steering belt. Conclusion: bearing damage on the 4th cylinder. Cause unknown. Presumably the injection valve did not work correctly and pushed diesel into the oil. Except minimally increased diesel consumption (did not affect at these low temperatures) and finally a funny clacking Now the Mazda 6 gets a new engine on guarantee (previous mileage: almost 37,000 km). On holiday it went with a Mazda 5, which was provided by the car dealership free of charge and which I now keep until the end of the repair. The workshop affirmed that it had not yet seen such a thing … Greeting Alfred