6 ▁N m ▁to ▁ 5 . 4 7 ▁x ▁ 1 0 6 ▁N m . ▁ ▁Other ▁te ch ▁facts ▁about ▁the ▁Liber ty ▁B 4 ... ▁The ▁B 4 ▁has ▁a ▁ 0 . 3 4 ▁C d ▁and ▁a ▁C d A ▁of ▁ 0 . 7 0 3 ▁m 2 ▁It ▁produces ▁ ▁at ▁ 6 4 0 0 ▁r pm ▁and ▁ ▁at ▁ 4 8 0 0 ▁r pm ▁– ▁in ▁comparison , ▁the ▁Australian ▁delivered ▁Im pre za ▁ST i ▁made ▁ ▁at ▁ 6 5 0 0 ▁r pm ▁and ▁ ▁at ▁ 4 0 0 0 ▁r pm . ▁Max imum ▁boost ▁pressure ▁is ▁quoted ▁at ▁ 0 . 9 3 3 ▁Bar ▁( at ▁ 4 8 0 0 ▁r pm ), ▁the ▁engine ▁has ▁a ▁minimum ▁fuel ▁oct ane ▁rating ▁of ▁ 9 8 ▁R ON . ▁Sub aru ▁Australia ▁lists ▁the ▁vehicle ▁capable ▁of ▁ 0 ▁– ▁ 6 0   m ph ▁( 0 - 9 7 ▁km / h ) ▁in ▁ 6 . 5 ▁seconds , ▁a ▁ 1 4 . 6 ▁second ▁quarter ▁mile ▁and ▁a ▁top ▁speed ▁of ▁. ▁ ▁Front ▁cal i per ▁pot ▁diameter ▁is ▁ 4 2 . 8   mm ▁( x 2 ), ▁and ▁rear ▁cal i per ▁pot ▁diameter ▁is ▁ 3 8 . 1   mm ▁( x 1 ). ▁The ▁B 4 ▁has ▁a ▁combined ▁cycle ▁driving ▁range ▁of ▁. ▁ ▁GT ▁The ▁GT ▁is ▁a ▁tun