▁which ▁were ▁b anned ▁after ▁the ▁fatal ▁crashes ▁at ▁the ▁R ally ▁Portugal , ▁where ▁three ▁spect ators ▁were ▁killed ▁and ▁more ▁than ▁ 3 0 ▁injured , ▁and ▁at ▁the ▁Tour ▁de ▁Cor se , ▁where ▁Henri ▁To iv onen ▁and ▁his ▁co - driver ▁Ser gio ▁Cr esto ▁died ▁in ▁a ▁fire ball ▁accident . ▁This ▁was ▁the ▁year ▁where ▁Group ▁B ▁( first ▁introduced ▁in ▁ 1 9 8 2 ) ▁was ▁at ▁its ▁peak , ▁and ▁the ▁ 1 9 8 6 ▁season ▁saw ▁some ▁of ▁the ▁most ▁powerful ▁and ▁s oph istic ated ▁r ally ▁cars ▁ever ▁built , ▁some ▁of ▁which ▁were ▁mid - eng ined , ▁like ▁the ▁L ancia ▁D elta ▁S 4 ▁and ▁the ▁Ford ▁R S 2 0 0 . ▁The ▁drivers ' ▁championship ▁was ▁won ▁by ▁Pe uge ot ' s ▁Ju ha ▁K ank k un en , ▁followed ▁by ▁two ▁other ▁" F lying ▁Fin ns ", ▁L ancia ' s ▁Mark ku ▁Al én ▁and ▁K ank k un en ' s ▁team mate ▁T imo ▁Sal onen . ▁The ▁manufact ur ers ' ▁title ▁was ▁taken ▁by ▁Pe uge ot , ▁after ▁a ▁close ▁battle ▁with ▁the ▁Mart ini - sp ons ored ▁L ancia ▁team . ▁ ▁Sum mary ▁ ▁The ▁season ▁began ▁with ▁the ▁Monte ▁Carlo ▁R ally ▁and ▁Henri ▁To iv onen ▁took ▁the ▁win ▁with ▁his ▁L ancia ▁D elta ▁S 4 , ▁making ▁himself ▁the ▁favour ite ▁for ▁the ▁title . ▁At ▁the