Ask an expert
I have just purchased a 2014 Toyota Mark X V6 2.5ltr and can not find any info on which grade of petrol to use
Because the Mark X is a used Japanese import, there is very little information available and no fuel specs listed. You may need to ask a Toyota agent as to fuel type recommended. The 2014 2.5 4 cyl Camry takes 91 and the 3.5 V6 Highlander takes 95, so it could go either way.