he Ferrari SF90 Stradale (Type F173) is a mid-engine PHEV (Plug-in Hybrid Electric Vehicle) sports car produced by the Italian automobile manufacturer Ferrari. The car shares its name with the SF90 Formula One car with SF90 standing for the 90th anniversary of the Scuderia Ferrari racing team and "Stradale" meaning "made for the road". The car has a 7.9 kWh lithium-ion battery for regenerative braking, giving the car 26 km (16 mi) of electric range. The car comes with four driving modes depending on road conditions. The modes are changed by the eManettino knob present on the steering wheel. The eDrive mode runs the car only on the electric motors. The Hybrid mode runs the car on both the internal combustion engine and the electric motors and is the car's default mode. In this mode, the car's onboard computer (called control logic) also turns off the engine if the conditions are ideal in order to save fuel while allowing the driver to start the engine again. The Performance mode keeps the engine running in order to charge the batteries and keeps the car responsive in order for optimum performance. The Qualify mode uses the powertrain to its full potential. The control logic system makes use of three primary areas: the high-voltage controls of the car (including the batteries), the RAC-e (Rotation Axis Control-electric) torque vectoring system, and the MGUK along with the engine and gearbox.
