▁ 5 % ▁b iod ies el ▁bl ends , ▁indicating ▁at ▁least ▁partial ▁accept ance ▁of ▁b iod ies el ▁as ▁an ▁acceptable ▁dies el ▁fuel ▁add itive . ▁ ▁In ▁ 2 0 0 7 , ▁Da im ler Ch rys ler ▁indicated ▁its ▁intention ▁to ▁increase ▁war rant y ▁coverage ▁to ▁ 2 0 % ▁b iod ies el ▁bl ends ▁if ▁bio f uel ▁quality ▁in ▁the ▁United ▁States ▁can ▁be ▁standard ized . ▁ ▁The ▁Volks wagen ▁Group ▁has ▁released ▁a ▁statement ▁indicating ▁that ▁several ▁of ▁its ▁vehicles ▁are ▁compatible ▁with ▁B 5 ▁and ▁B 1 0 0 ▁made ▁from ▁ra pe ▁seed ▁oil ▁and ▁compatible ▁with ▁the ▁EN ▁ 1 4 2 1 4 ▁standard . ▁The ▁use ▁of ▁the ▁specified ▁b iod ies el ▁type ▁in ▁its ▁cars ▁will ▁not ▁void ▁any ▁war rant y . ▁ ▁Mer cedes ▁Ben z ▁does ▁not ▁allow ▁dies el ▁fu els ▁containing ▁greater ▁than ▁ 5 % ▁b iod ies el ▁( B 5 ) ▁due ▁to ▁concerns ▁about ▁" production ▁short com ings ". ▁Any ▁dam ages ▁caused ▁by ▁the ▁use ▁of ▁such ▁non - appro ved ▁fu els ▁will ▁not ▁be ▁covered ▁by ▁the ▁Mer cedes - B enz ▁Limited ▁W arr ant y . ▁ ▁Starting ▁in ▁ 2 0 0 4 , ▁the ▁city ▁of ▁Hal if ax , ▁Nova ▁Scot ia ▁decided ▁to ▁update ▁its ▁bus ▁system ▁to ▁allow ▁the ▁fleet ▁of ▁city ▁bus es ▁to ▁run ▁entirely ▁on ▁a ▁fish - o il