▁In ▁the ▁Cooper ▁model , ▁the ▁W 1 1 ▁T rite c ▁ 4 - cy l inder ▁engine ▁was ▁replaced ▁with ▁a ▁▁ 1 . 6 - lit re ▁Prince ▁engine ▁incorpor ating ▁B MW ' s ▁Val vet ron ic ▁infinitely ▁variable ▁val ve ▁lift , ▁developed ▁on ▁and ▁with ▁Pe uge ot ' s ▁core ▁engine . ▁It ▁has ▁been ▁reported ▁in ▁road ▁tests ▁that ▁this ▁takes ▁the ▁car ▁from ▁ 0 – 1 0 0   km / h ▁in ▁a ▁claimed ▁ 9 . 1 ▁seconds ▁( 0 - 6 0   m ph : ▁ 8 . 5 ▁seconds ) ▁and ▁has ▁a ▁top ▁speed ▁of ▁. ▁F uel ▁economy ▁of ▁ ▁on ▁the ▁combined ▁cycle ▁is ▁nearly ▁ ▁better . ▁The ▁more ▁powerful ▁ ▁Cooper ▁S ▁rep laces ▁the ▁super char ger ▁with ▁a ▁new ▁tw in ▁scroll ▁tur bo char ger ▁N 1 4 ▁DO HC ▁motor ▁in ▁the ▁interests ▁of ▁efficiency , ▁and ▁has ▁gas oline ▁direct ▁injection ; ▁consequ ently , ▁this ▁engine ▁version ▁does ▁not ▁have ▁Val vet ron ic . ▁This ▁engine ▁also ▁has ▁an ▁" over boost " ▁function ▁which ▁tempor arily ▁ra ises ▁the ▁tor que ▁by ▁ ▁under ▁hard ▁acceleration . ▁As ▁a ▁result , ▁ 0 – 1 0 0   km / h ▁is ▁covered ▁in ▁a ▁claimed ▁ 7 . 1 ▁seconds ▁( 0 - 6 0   m ph : ▁ 6 . 7 ▁seconds ), ▁and ▁top ▁speed ▁is ▁. ▁It ▁ach ieves