Under normal circumstances, Japanese cars will not have any faults after ten years of driving, while German cars will have some electronic faults and some sealing rubber pads will also have oil leakage. The reason for this difference is that the design ideas and pursuit ideas of cars are different.

Most Japanese cars use naturally aspirated engines, and a few Japanese cars use turbocharged engines. Naturally aspirated engines are more stable than turbocharged engines. After using for a long time, the rubber gasket of the engine will not leak oil, and the working temperature and limit speed of the Japanese car engine are not very high.

On the other hand, German cars pursue control and new technology, so there are many advanced and complicated electronic systems on German cars. These electronic systems will have various failures for a long time. In addition, German cars have strict power squeezing on engines, so the engine seals of German cars will bear high temperature and high pressure for a long time, and leakage will occur after a long time.