vern ▁( using ▁the ▁four - cy l inder ▁engine ▁previously ▁used ▁in ▁the ▁Tw elve ) ▁and ▁the ▁Vel ox ▁using ▁a ▁new ▁wide - b ore ▁development ▁of ▁the ▁six - cy l inder ▁engine ▁from ▁the ▁Four teen . ▁Otherwise , ▁the ▁L - Types ▁re used ▁the ▁three - speed ▁transmission ▁( al beit ▁with ▁a ▁switch ▁to ▁a ▁column ▁g ear ▁change , ▁hyd ra ul ic ▁bra kes ▁and ▁Dub on net ▁susp ension ▁of ▁the ▁pre - war ▁models ▁essentially ▁un changed . ▁Those ▁prede cess ors ▁had ▁been ▁advanced ▁for ▁their ▁time ▁so ▁the ▁Wy vern ▁and ▁Vel ox ▁were ▁still ▁compet itive ▁despite ▁being ▁considered ▁small ▁and ▁cr amp ed ▁alongside ▁the ▁lik es ▁of ▁the ▁Morris ▁Minor ▁and ▁Austin ▁A 4 0 ▁Dev on . ▁The ▁Vel ox ▁especially , ▁with ▁its ▁smooth ▁and ▁powerful ▁engine ▁in ▁a ▁relatively ▁small ▁car , ▁offered ▁strong ▁performance ▁and ▁good ▁reli ability ▁to ▁comp ete ▁against ▁the ▁V 8 - power ed ▁Ford ▁Pil ot . ▁ ▁The ▁L - Types ▁were ▁replaced ▁by ▁a ▁truly ▁new ▁model , ▁the ▁E - Types , ▁in ▁ 1 9 5 1 ▁with ▁the ▁new ▁cars ▁having ▁been ▁in ▁development ▁since ▁ 1 9 4 8 . ▁G M ▁was ▁still ▁restrict ing ▁V aux hall ▁to ▁a ▁one - body ▁policy ▁and ▁the ▁range ▁still ▁consisted ▁of ▁two ▁models ▁differenti ated ▁mostly ▁by ▁their ▁engines ▁- ▁the ▁four - cy l inder ▁E IX ▁Wy vern ▁and