What are the reasons for not being able to engage the gear when pressing the clutch pedal in a small car?

[VonDylan]

There are several reasons why a small car's clutch cannot engage the gear when pressed, including clutch cable failure, excessive gear self-locking force of the clutch, clutch master cylinder failure, and transmission failure. Clutch cable failure: Some manual transmission cars still use cables to control the clutch. The outer sheath of the cable can easily crack, leading to difficulty in engaging gears without the clutch. In this case, simply replace the cable. Excessive gear self-locking force of the clutch: This causes difficulty in shifting gears in and out. This situation requires adjusting the clutch cable and gear lock at a repair shop. Clutch master cylinder failure: The clutch hydraulic master cylinder may experience pressure loss or oil leakage during use, resulting in the inability to engage gears when pressing the clutch. It is necessary to replace the clutch master cylinder at a repair station, followed by an air bleeding operation. Transmission failure: For example, insufficient transmission fluid, sticking transmission shift mechanism, or failure of a certain gear or shift fork can all cause difficulty in shifting gears or the inability to engage gears.