What does AT mean on a car?

[SanKhloe]

AT on a car stands for automatic transmission, also known as automatic gearbox, indicating that the vehicle is equipped with a hydraulic automatic transmission. The hydraulic automatic transmission achieves gear shifting through hydraulic drive and planetary gear combination, and it does not require a clutch for gear changes. Here is some related information: 1. An automatic transmission is a device that can automatically shift gears based on engine speed. There are four common types of automatic transmissions: hydraulic automatic transmission, continuously variable transmission (CVT), electronically controlled mechanical automatic transmission, and dual-clutch automatic transmission. 2. The hydraulic automatic transmission has fewer gears, significant changes between them, and is easy to operate. However, it reacts relatively slowly to speed changes compared to manual transmissions, is less responsive, and has lower transmission efficiency. When a car cannot start due to a dead battery, pushing or towing the car to start it should be avoided to prevent damage to the gears of the hydraulic automatic transmission.