▁and ▁X 3 5 8 ▁were ▁available ▁with ▁a ▁six - speed ▁automatic ▁transmission , ▁a ▁range ▁of ▁gas oline ▁and ▁dies el ▁engines ▁( V 6 , ▁V 8 ▁and ▁super charg ed ▁V 8 ), ▁numerous ▁trim ▁levels ▁— ▁and ▁short ▁wheel base ▁( 2 0 0 3 – 2 0 0 9 ) ▁or ▁long ▁wheel base ▁( 2 0 0 5 – 2 0 0 9 ) ▁configurations . ▁Ext ended - length ▁models ▁were ▁the ▁longest ▁vehicles ▁J agu ar ▁had ▁manufact ured . ▁▁ ▁The ▁X 3 5 0 ▁was ▁noted ▁for ▁its ▁advanced ▁elect rical ▁systems , ▁self - level ing ▁adapt ive ▁air ▁susp ension ▁and ▁full ▁al umin um ▁un ib ody ▁ch ass is ▁and ▁body work , ▁among ▁the ▁first ▁for ▁a ▁mass - produ ced ▁autom obile . ▁The ▁body shell ▁( body ▁in ▁white ) ▁was ▁ 4 0 ▁per ▁cent ▁l ighter ▁and ▁ 5 0 ▁percent ▁st iffer ▁than ▁its ▁prede cess or , ▁despite ▁its ▁increased ▁overall ▁size . ▁ ▁St y ling ▁of ▁the ▁sevent h ▁generation ▁was ▁a ▁conserv ative ▁evolution ▁of ▁the ▁previous ▁X J ' s ▁sty ling ; ▁its ▁sl atted ▁gr ille ▁recall ing ▁the ▁gr ille ▁of ▁the ▁original ▁ 1 9 6 8 ▁X J . ▁Ex terior ▁sty ling ▁was ▁by ▁principal ▁designer ▁Tom ▁O wen ▁along ▁with ▁Sand y ▁Bo yes , ▁under ▁the ▁design ▁director ship ▁of ▁Geoff ▁Law son , ▁who ▁died ▁mid way ▁through