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What is the difference between installing an automatic transmission and a manual transmission?

2 Answers

June

07/25/25 6:38am

Introduction to the differences between automatic and manual transmissions: 1. Different principles. 1. Manual transmission: The driver manually shifts the gear lever (shift knob) to change the gear meshing position inside the transmission, altering the gear ratio to achieve speed variation. 2. Automatic transmission: While driving, the driver operates the accelerator pedal as needed, and the automatic transmission automatically shifts into different gears based on engine load and vehicle operating conditions, adjusting gear changes according to vehicle speed and engine RPM. 2. Different characteristics. 1. Manual transmission: Stable performance, high transmission efficiency, and high fuel utilization. 2. Automatic transmission: Convenient operation with flexible gear ratios. There are various types, including hydraulic automatic transmissions, mechanical continuously variable transmissions (CVT), electronically controlled mechanical automatic transmissions, and dual-clutch automatic transmissions. The transmission is connected to the engine via a clutch, allowing the transmission's input shaft to synchronize with the engine's RPM. 3. Transmission efficiency. Differences exist because manual transmissions rely entirely on mechanical transmission, whereas automatic transmissions use hydraulic transmission via a torque converter, leading to variations in operational efficiency and resulting in differences in fuel consumption. For vehicles of the same brand and displacement, manual transmissions can save approximately 10% more fuel compared to automatic transmissions.

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RuthFitz

08/10/25 6:15pm

I've been driving for most of my life, having tried both manual and automatic transmissions. The biggest advantage of installing an automatic transmission is peace of mind, especially in traffic jams where you don't need to press the clutch with your left foot or shift gears with your right hand, freeing up both hands. Manual transmissions are simple and reliable in structure, and it's easier to replace parts yourself, unlike the precision and complexity of automatic transmissions. Over time, the difference in maintenance costs becomes apparent—replacing a clutch plate for a manual transmission costs a few hundred dollars, while repairing an automatic transmission can easily run into thousands. In terms of fuel consumption, manual transmissions are more fuel-efficient, but with continuous advancements in automatic transmission technology, the gap in fuel consumption between current CVTs and dual-clutch transmissions isn't significant. If you frequently drive long distances, the comfort of an automatic transmission is truly irreplaceable.

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