Ford Focus SFE FWD FFV is a Ford Focus model with the Special Fuel Economy (SFE) package and Front-Wheel Drive (FWD) with Flexible Fuel Vehicle (FFV) capability. The SFE package has been designed to maximize the fuel efficiency of the vehicle, while the FFV allows it to operate on a variety of fuel types, including E85 (85% ethanol, 15% gasoline) and standard unleaded gasoline.