DCTs (DSG) technology has gained a substantial market share in the recent times ( up from 3.4% to 8.5% market share in the last 5 years).
source/image(PrtSc): Learn Engineering
This video illustrates with the help of animation why DCTs are the best transmission ever. This video also gives a brief introduction on working and drawbacks of a regular manual transmission.Watch the video by Learn Engineering to learn more:
A dual-clutch transmission uses two separate clutches for odd and even gear sets. It can fundamentally be described as two separate manual transmissions with their respective clutches contained within one housing, and working as one unit.
Although usually operated in a fully automatic mode, many also have the ability to allow the driver to manually shift gears in semi-automatic mode, albeit still using the transmission’s electrohydraulics.