E85 and Flex Fuel Vehicles (FFVs) We’ve retrofitted my 2002 Ford Focus to be able to use E85, 85% renewable ethanol. (Watch the video!) You can also buy flex fuel vehicles (FFVs) or vehicles in Brazil that are designed to use high ethanol blends. If you are in Brazil, you have two choices at the pump: either Gasoline C (E27) or hydrous ethanol (E100). All cars in Brazil can run on E27. FFVs, which compose 72 percent of the Brazilian fleet today (more than 30 million cars and motorcycles), can use E100 or E27 or any mix of these two fuels. In the US, it takes a bit of extra effort to figure out who is selling E85; there’s an app for that. We would much prefer to have this cleaner, greener high performance fuel at every station without it being a big deal.