Normalized to US gallon / US dollar for Q2 2014, Mexico's gasoline buying cohort spent 12.14% of their income (the country's average income) on this fuel type. By comparison, the US gasoline buying cohort spent 2.5% of their incomes on gasoline in Q2 2014. UK gasoline buyers spent 6.87% of their income on gasoline in the same Q. Venezuela is the World's lowest cost for consumers, at only 0.13% per buyer. The highest is the Philippines, at 55.72% of income is spent on gasoline per buyer! Argentinians pay a whopping 20.22% of their incomes on gasoline. But Mexican gasolne buyers are still WAY better off vis gasoline cost per average 2014 income than the Chinese. Of the World's 61 polled countries, Mexico is just about in the middle of gasoline affordability. BTW, the official Mexican unemployment rate was (05/2013) at 4.9%; while the US unemployment rate at the same time was 7.6% (makes you wonder how Mexico compiles statistics).
Saudi Arabian gasoline buyers pay 0.65% of their income. Luxembourgers who buy gasoline pay a measly 2.21% of their income HOWEVER, their US dollar normalized price per US gallon in that country is $7.02 ! But check this out: Denmarkers pay $9.14 a US gallon, however this only represents 5.39% of their income for their gasoline buying population cohort.
The above from Bloomberg L.P. financial services 2014