Dual-clutch Transmission (DCT)
A dual-clutch transmission is an automated gearbox with two clutches, one for odd and one for even gears, for very fast shifts.
What is Dual-clutch Transmission (DCT)?
Known as DSG, PDK, EDC and other names. Clutches can be dry or wet (in oil). A mechatronic unit controls clutches and gear selection. Dry-clutch DCTs are lighter and used for smaller engines; wet-clutch versions handle more torque and heat.
How it works
While one gear is engaged, the next is preselected; shifting swaps clutches.
Why it matters for your car
Juddering from standstill or harsh shifts can indicate clutch or mechatronic problems. Wet DCTs need oil changes at specified intervals.
Other terms
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