What does AT mean in cars?

1 Answers
StAlexa
07/30/25 7:03am
AT stands for Hydraulic Automatic Transmission, indicating that the vehicle is equipped with this type of transmission. Hydraulic automatic transmissions achieve gear shifting through hydraulic drive and planetary gear combinations, without using a clutch. Below is relevant information: 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), automated manual transmission (AMT), and dual-clutch transmission (DCT). Hydraulic automatic transmissions have fewer gears, significant changes between them, and are easy to operate. However, they respond slower to speed changes compared to manual transmissions, are less sensitive, and have lower transmission efficiency. When a car cannot start due to a dead battery, pushing or towing the vehicle to start it should be avoided to prevent damage to the gears of the hydraulic automatic transmission.
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