Why does an automatic transmission car not move when releasing the brake and only moves when pressing the accelerator?

[BrookeRose]

There are several reasons why an automatic transmission car does not move when releasing the brake and only moves when pressing the accelerator. One reason could be an uneven road surface, with obstacles or potholes blocking the tires. Another reason might be that the handbrake is not released or the autohold function is activated. Additionally, rusted brake discs causing high resistance or transmission issues could also be the cause. Here is some extended information about automatic transmissions: 1. Definition: An automatic transmission, as the name suggests, does not require the driver to manually shift gears. The vehicle automatically selects the appropriate gear based on the driving speed and traffic conditions. Typically, an automatic transmission car has six gear positions, arranged from top to bottom as: P, R, N, D, S, L. 2. Principle: The engine's power is transmitted through the transmission, which is also a key factor affecting fuel consumption. Generally, an automatic transmission consumes 0.1 or more units of fuel compared to a manual transmission. Whether manual or automatic, the more gears a transmission has, the more fuel-efficient it tends to be.