Guatemala has begun implementing E10 gasoline, a fuel mixture containing ethanol. This move raises several consumer questions regarding price, availability, and identification of the new fuel. The change aims to incorporate renewable energy sources into the country’s fuel supply. Consumers are seeking clarity on potential cost differences between E10 and traditional gasoline. Information is also needed on where E10 will be available across the country and how to visually identify it at gas stations. Finally, Guatemalan authorities are providing avenues for consumers to file complaints regarding the implementation or quality of the new fuel blend.