Flexifuel is new. A Flexifuel vehicle is a flexible-fuel vehicle (FFV) or a dual-fuel vehicle. Flexi fuel vehicles may also be called flex-fuel as well. The Flexi fuel vehicles that you are seeing on American roads are designed to run on ethanol (a type of alcohol), gasoline or any mixture of both. Cars made previously to 1980 can not tolerate any ethanol at all. The ethanol played havoc with those cars rubber seals, aluminum and other components of those car models. Cars made after 1980 onwards could tolerate and run on gasohol � a 10 % mixture of ethanol mixed with 90 % ethanol.