▁they ▁concluded ▁with ▁a ▁final ▁design ▁tested ▁from ▁ 1 9 8 1 ▁till ▁ 1 9 8 6 ▁and ▁was ▁first ▁used ▁in ▁Por sche ▁ 9 5 6 ▁in ▁ 1 9 8 3 . ▁D CT ▁work ▁continued ▁from ▁Por sche ▁in - house ▁development , ▁for ▁A udi ▁and ▁Por sche ▁racing ▁cars ▁later ▁in ▁the ▁ 1 9 8 0 s , ▁when ▁computers ▁to ▁control ▁the ▁transmission ▁became ▁compact ▁enough : ▁the ▁Por sche ▁Do ppel ku pp l ungs get rie be ▁() ▁( P DK ) ▁used ▁in ▁the ▁Por sche ▁ 9 5 6 ▁and ▁ 9 6 2 ▁Le ▁Mans ▁race ▁cars ▁from ▁ 1 9 8 3 , ▁and ▁the ▁A udi ▁Sport ▁Qu attro ▁S 1 . ▁ ▁A ▁dual - cl utch ▁transmission ▁elimin ates ▁the ▁tor que ▁converter ▁as ▁used ▁in ▁conventional ▁ep icy clic - ge ared ▁automatic ▁transm issions . ▁Instead , ▁dual - cl utch ▁transm issions ▁that ▁are ▁currently ▁on ▁the ▁market ▁primarily ▁use ▁two ▁oil - b athed ▁wet ▁multi plate ▁cl ut ches , ▁similar ▁to ▁the ▁cl ut ches ▁used ▁in ▁most ▁motor cy cles , ▁though ▁dry - cl utch ▁versions ▁are ▁also ▁available . ▁ ▁The ▁first ▁series ▁production ▁road ▁car ▁with ▁a ▁D CT ▁was ▁the ▁ 2 0 0 3 ▁Volks wagen ▁G olf ▁M k 4 ▁R 3 2 . ▁ ▁, ▁the ▁largest ▁sales ▁of ▁D CT s ▁in ▁Western ▁Europe ▁are ▁by ▁various ▁mar ques