1. The engine oil circuit is blocked. Pay attention to the engine first. If the car has a sense of frustration when driving, the engine will never get rid of this relationship. Ignition, air intake and fuel injector determine the combustion of fuel, and fuel is also the power source of the engine. At this time, if the air intake becomes lower, the ignition becomes weaker, or the fuel injection becomes less, the power will be insufficient and there will be a setback.

2. The solenoid valve is damaged due to unclean transmission oil. There is sludge in the gearbox oil circulating in the gearbox to block the oil passage in the valve body, which will lead to a series of gearbox problems such as high temperature, impact and slippage for a long time.

3. During the running-in period of a new car, it is normal to have a slight sense of frustration in the car. At that time, the power output of the vehicle and the joint of components were not optimal. The gearbox computer had a self-learning mechanism and needed to constantly adjust the oil pressure to shift gears.