▁a ▁. 3 2 ▁coefficient ▁of ▁drag . ▁Do or ▁shut ▁lines ▁were ▁engine ered ▁uniformly ▁to ▁a ▁ 3 . 8 ▁mm ▁gap ▁to ▁adjacent ▁body ▁elements . ▁The ▁h ood ▁and ▁tr unk ▁were ▁engine ered ▁to ▁ 3 . 5 ▁mm ▁to ▁adjacent ▁body ▁elements . ▁The ▁doors ▁opened ▁to ▁ 6 2 ▁degrees ▁front ▁and ▁ 6 5 ▁degrees ▁rear . ▁The ▁long ▁wheel base ▁model , ▁introduced ▁in ▁ 2 0 0 5 , ▁was ▁the ▁longest ▁vehicle ▁J agu ar ▁had ▁manufact ured ▁at ▁the ▁time . ▁With ▁a ▁five ▁in ch ▁extension ▁behind ▁the ▁B - p ill ar ▁( i . e ., ▁the ▁rear ▁doors ▁were ▁ 5 ▁inches ▁longer ), ▁the ▁extended ▁model ▁had ▁a ▁ ▁wheel base ▁and ▁overall ▁length ▁of ▁ ▁— ▁the ▁body shell ' s ▁weight ▁increased ▁by ▁ ▁and ▁the ▁roof ▁height ▁increased ▁by ▁ ▁over ▁the ▁standard ▁wheel base ▁X J . ▁Turn ing ▁radius ▁was ▁increased ▁by ▁ 1 3 ▁inches ▁over ▁the ▁standard ▁wheel base ▁model . ▁ ▁The ▁ 1 2 - vol t ▁w iring ▁system ▁used ▁multiple x ing ▁to ▁integrate ▁four ▁systems : ▁low - speed , ▁event - dri ven ▁communic ations ▁around ▁the ▁body ; ▁high ▁speed ▁pow ert rain ▁system ▁( engine , ▁transmission , ▁air ▁susp ension ▁system ▁and ▁instrument ▁cluster ); ▁fi ber - opt ic ▁communication ▁protocol ▁for ▁te lem at ics , ▁navigation , ▁phone , ▁voice ▁activation , ▁audio ▁and ▁multimedia ▁systems ;