Most cars that are not flex-fuel vehicles (FFVs) can burn up to 10% ethanol without having any major issues. Ethanol is also known as E10, which denotes 10% ethanol and 90% gasoline. However, it is important to note that going over this limit can cause problems such as engine damage, fuel injector degradation, and damage to fuel lines due to the corrosive properties of ethanol. If your car is not a flex-fuel vehicle, it is recommended to stick to regular gasoline or lower ethanol blends to ensure its longevity.
Flex-fuel vehicles, on the other hand, are designed to handle higher ethanol blends, including E85, which contains up to 85% ethanol and 15% gasoline. These vehicles come equipped with specific components that allow them to properly and efficiently burn higher ethanol blends.
