I know that in Venezuela fuel is extremely cheap. After all, they produce lots of petroleum and they follow the political decision to use some of this oil to drop the prices in the internal market, even when exportation prices would make them get more money selling all the oil to foreign countries.
>"Venezuela: We have calculated the price of diesel using the 2012 benchmark results from the German Development Agency. Then, we updated the data with up-to-date currency values and information on the change in international petroleum prices. Based on these estimates, the price of diesel is 0 U.S. Dollar. For comparison, the average price of diesel in the world for this period is 0.91 U.S. Dollar. "
http://www.globalpetrolprices.com/Venezuela/diesel_prices/