Is it normal for a dual-clutch transmission to make a clicking sound when shifting gears?
2 Answers
If the dual-clutch transmission only produces a slight "click" sound during the gear shifting process, then this situation is perfectly normal and will not have any impact on the engine or transmission. The reason this sound mainly occurs in low gears is that the speed difference in the transmission is greater at low gears, and the torque fluctuation during shifting is larger than in other gears. If the transmission makes continuous clicking sounds while driving, it is necessary to have it checked at a repair shop as soon as possible. Explanation of the causes of abnormal sounds in dual-clutch transmissions: 1. Gear pre-engagement: The shift fork drives the shift assembly to quickly engage the synchronizer ring, achieving gear pre-engagement. 2. Dual-clutch working switch: The pre-engaged idling gear begins to bear the load, and the gap between the driving gear and the driven gear gradually decreases until they are fully meshed. During this process, slight metal knocking sounds may occur.
To be honest, I've driven quite a few dual-clutch transmission (DCT) cars, and slight clicking sounds during gear shifts are usually normal. This is because the DCT has two clutches switching gears internally, similar to the engagement sound of a manual transmission. If the sound is crisp and regular, without any jerking or vibration, there's no need to worry—it's just part of the design. However, if the clicking becomes louder, more frequent, or particularly noticeable during low-speed crawling, it could indicate worn clutch plates, hydraulic system issues, or module problems, which require prompt inspection. I've personally driven Volkswagen and Ford models and encountered similar situations—the key is to monitor changes in the sound and driving smoothness to ensure it doesn't compromise safety. Regular transmission maintenance can prevent many potential issues.
