▁cyl ind ers ▁being ▁both ▁located ▁under ▁the ▁floor pan , ▁the ▁boot ' s ▁volume ▁is ▁reduced ▁only ▁by ▁ 2 5 ▁lit ers ▁- ▁ 2 0 0 ▁L ▁instead ▁of ▁the ▁mon of uel ' s ▁ 2 2 5 . ▁On ▁the ▁other ▁hand , ▁this ▁requires ▁a ▁ 4 0   mm ▁t aller ▁ride ▁height ▁and ▁a ▁re work ed , ▁trans vers al ▁sil encer ▁- ▁thus ▁the ▁Natural ▁Power ▁uses ▁the ▁lifted ▁ch ass is ▁of ▁the ▁Tre kk ing ▁/ ▁ 4 x 4 ▁versions . ▁ ▁Total ▁bi - f uel ▁capacity ▁is ▁ 7 2 ▁lit ers ▁- ▁or ▁ 1 2 ▁kil og rams ▁- ▁of ▁C NG ▁and ▁ 3 5 ▁L ▁of ▁pet rol ▁- ▁two ▁lit ers ▁less ▁than ▁the ▁mon of uel ' s ▁ 3 7 . ▁At ▁startup ▁the ▁engine ▁runs ▁on ▁pet rol , ▁but ▁switch es ▁to ▁C NG ▁immediately ▁after ; ▁the ▁car ▁switch es ▁back ▁to ▁pet rol ▁automatically ▁if ▁it ▁runs ▁out ▁of ▁C NG ▁or ▁any ▁time ▁by ▁driver ' s ▁demand , ▁via ▁a ▁dedicated ▁button ▁on ▁the ▁dash board . ▁ ▁Due ▁to ▁the ▁new ▁tight ening ▁em issions ▁reg ulations ▁Euro ▁ 6 d - Temp , ▁after ▁September ▁ 2 0 1 8 ▁the ▁power ▁output ▁of ▁the ▁Natural ▁Power ▁T win A ir ▁engine ▁is ▁reduced ▁from ▁ 8 0 ▁to ▁ 7 0 ▁PS , ▁when ▁running ▁on ▁C NG ▁- ▁although ▁remains