Road motor vehicles were created when the first steam-powered car appeared. (1769. French N.J. Cugnot). The steam car could pull a load of 5 t and develop a speed of 5 km / h, but had to stop every 12 to 15 minutes to achieve the necessary pressure to operate the car. The first car with an internal combustion engine was built by Carl Benz on the 3rd July of 1886 in Mannheim. Since then, the automotive industry has evolved in the direction in which vehicles today use “modern propulsion,” such as: 1. Internal combustion engines, 2. Electric motors 3. Hybrid propulsion. The need for a hybrid car arose due to: 1. exploitation of non-renewable forms of energy that is on the earth, which internal combustion engines use and polute the environment 2. the impracticality of electric cars that require a larger amount of charging time and a small scope of vehicles. Hybrid propulsion in road traffic is relatively new in the automotive industry, but a hybrid vehicle refers to a vehicle that uses two or more energy sources instead of using one energy source like a traditional car. It is the most common combination of petrol or Diesel engines and electromotor.