▁All ▁points ▁scored ▁were ▁retained ▁towards ▁the ▁championship ▁tot als . ▁ ▁Results ▁ ▁A ▁total ▁of ▁ 3 7 1 ▁drivers ▁scored ▁points ▁in ▁the ▁ 1 9 8 1 ▁World ▁End urance ▁Championship ▁of ▁D ri vers . ▁ ▁World ▁End urance ▁Championship ▁of ▁M akes ▁The ▁World ▁End urance ▁Championship ▁of ▁M akes ▁was ▁open ▁FI A ▁Group ▁ 1 , ▁Group ▁ 2 , ▁Group ▁ 3 , ▁Group ▁ 4 ▁and ▁Group ▁ 5 ▁cars ▁and ▁to ▁I MS A ▁GT X ▁cars . ▁ ▁C ars ▁from ▁all ▁el ig ible ▁groups ▁were ▁combined , ▁and ▁then ▁divided ▁into ▁two ▁Div isions ▁based ▁on ▁engine ▁capacity . ▁Point s ▁were ▁awarded ▁on ▁a ▁ 2 0 - 1 5 - 1 2 - 1 0 - 8 - 6 - 4 - 3 - 2 - 1 ▁basis ▁for ▁the ▁top ▁ten ▁places ▁in ▁each ▁Division ▁at ▁each ▁race . ▁Only ▁the ▁best ▁placed ▁car ▁of ▁each ▁make ▁in ▁each ▁division ▁at ▁each ▁race ▁was ▁el ig ible ▁to ▁score ▁points . ▁C ars ▁from ▁groups ▁not ▁included ▁in ▁the ▁championship ▁( e . g . ▁FI A ▁Group ▁ 6 ▁cars ) ▁were ▁dis reg arded ▁when ▁assess ing ▁divis ional ▁positions ▁for ▁championship ▁purposes . ▁Only ▁half ▁points ▁were ▁awarded ▁for ▁the ▁short ened ▁Nur bur gr ing ▁race . ▁The ▁best ▁five ▁round ▁results ▁could ▁be ▁retained ▁by ▁each ▁make . ▁ ▁Results ▁The ▁overall ▁World ▁End urance ▁Championship ▁of ▁M akes ▁title ▁was