Front-wheel drive is the most commonly used drive principle on passenger car models up to the mid-size class. Power is transmitted via the front wheels. The engine, transmission, axle drive and differential are grouped together to form a compact unit. With front-wheel drive, the car is pulled along, so that the drive forces and the inertial force of the car are balanced. The front wheels have to absorb drive, brake and cornering forces. Influences on the steering are counteracted by appropriate front suspension configurations.