Dual Clutch Transmission or DCT is a combination of automatic and manual gearbox system. It has no torque converter like a traditional automatic transmission. This technology comprises of two separate shafts with their own clutches for gear shifting, one with even-numbered gears and one for odd-numbered gears.
Shifting to the higher and lower gears in this technology is seamless but can become noisy and sometimes rough for the gear-shift. DCT is a dry transmission system, which allows the driver to not change the gearbox fluid ever. This system keeps the clutches dry and wearing out of the frictional quality happens eventually.
Volkswagen Group terms the DCT as Direct Shift Gearbox or DSG. The models like BMW 3 Series Coupe, BMW M3, Ferrari California, Porsche 911 use the Dual Clutch Transmission (DCT). Other notable models are Kia Seltos and Hyundai Venue.