Deformation of the pressure plate is a common manifestation of clutch failure, and its influence covers multiple dimensions such as power transmission, driving safety and component lifespan

Decline in power transmission efficiency
The deformation of the pressure plate leads to uneven contact with the friction plate, resulting in insufficient pressure in some areas and causing the clutch to slip. It is manifested as an increase in engine speed but a slow rise in vehicle speed, especially when accelerating sharply or climbing slopes, the power is significantly insufficient.
Long-term slippage can cause the friction plates to overheat and burn, further intensifying power loss.
Difficulty and jerks in gear shifting
If the flatness of the pressure plate exceeds the standard (such as 0.5 millimeters), the clutch will not disengage completely. During gear shifting, the meshing of gears will be blocked, resulting in a "tooth breakage" phenomenon. In severe cases, forced gear shifting will be required, causing damage to the transmission.
At idle speed, the deformation of the pressure plate may cause the vehicle to shake or make abnormal noises.
Safety hazards and interlocking damage of components
Deformation of the pressure plate can damage the clutch buffer mechanism (such as diaphragm springs), increasing the impact force between the engine and the transmission. Long-term use may cause damage to components such as the flywheel and transmission bearings.
When braking in an emergency, if the pressure plate fails to provide sufficient pressure, it may cause the clutch plate to slip instantaneously, increasing the risk of vehicle loss of control.
Case: A car owner reported a sudden drop in power when climbing a slope. Upon inspection, it was found that there was a 0.8-millimeter depression on the working surface of the pressure plate, causing local slippage of the friction plate. After replacing the pressure plate, the power was restored and the smoothness of gear shifting was significantly improved.