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What is the difference between AMT and manual-automatic transmission?

2 Answers

LeCole

07/24/25 3:18am

Transmission is one of the important drivetrain components in a car, and its performance is a key parameter that determines the vehicle's performance. Transmissions are mainly divided into manual transmissions and automatic transmissions. Among them, both AT and AMT belong to automatic transmissions. The specific differences between the two are as follows: 1. AT Transmission: The AT transmission consists of a valve body, oil pump, clutch, brake, one-way clutch, diaphragm spring, elastic retaining ring, steel plates, friction plates, large sun gear, small sun gear, planetary carrier, and ring gear. The AT transmission has a complex and precise structure, and in actual vehicle installation, it needs to be connected to a torque converter. AT - Automatic Transmission, mature technology, relatively higher fuel consumption. 2. AMT Transmission: The AMT transmission is essentially a manual transmission with automatic clutch and gear-shifting functions. Its structure is fundamentally the same as that of a traditional parallel-axis manual transmission. AMT transmissions have relatively larger shift shocks (though advancements in electronic control technology have made shifting actions and timing more precise, reducing the shocks). They are simple in structure, highly reliable, and easy to maintain. Additionally, since they are essentially manual transmissions with added automatic clutch and gear-shifting mechanisms, they have more gear options, making them more adaptable to various complex driving conditions. Ordinary AMT transmissions cannot amplify the input torque because they lack a torque converter, except for some heavy-duty transport vehicles that use AMT transmissions equipped with torque converters to handle their specific working conditions.

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Nathaniel

08/10/25 10:51pm

As an automotive enthusiast, I often ponder the differences between transmissions. AMT is essentially a manual transmission with an automated clutch control system, featuring a simple structure and low cost. However, it tends to have noticeable jerks during gear shifts, especially during low-speed starts or in congested traffic, feeling as if a robot is operating it—not very smooth. On the other hand, the automated manual transmission (often referred to as 'Tiptronic' or 'Sportronic') is entirely different. It adds manual shifting capabilities to an automatic transmission, such as a torque converter, offering smooth and seamless operation. In manual mode, it allows free control of gears for acceleration or deceleration, with quick response during high-speed overtaking. The structural differences mean AMT is commonly found in budget-friendly cars to save costs, while automated manual transmissions are more widely used in mid-to-high-end models to enhance driving quality. When choosing a car, consider your budget and comfort needs.

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