General information

According to its purpose and functions, the brake system of the car is divided into working, spare, parking and emergency. The service brake system regulates the speed of the vehicle and stops it with the necessary efficiency. The spare is used to stop the car with the necessary efficiency in the event of failure of the working brake system. Parking is used to keep the car motionless relative to the road. It is mainly used to hold a standing car, but it can also be used as an emergency in case of failure of the working brake system.

The car uses a working brake system with hydraulic drive and diagonal separation of circuits, which significantly increases the safety of driving a car.

One hydraulic drive circuit ensures the operation of the brake mechanisms of the right front and left rear wheels, the other - the left front and right rear. If one of the circuits fails, the second circuit is used as a spare brake system, which ensures that the car stops with sufficient efficiency. The brake system consists of a master cylinder, a vacuum brake booster, disc brakes on the front wheels and drum or disc brakes on the rear wheels. Vehicles with 1.3 and 1.4 liter engines have solid front brake discs, while models with 1.6 and 1.6 liter engines with ABS have ventilated disc front brakes.

The brake fluid reservoir is located in the engine compartment above the master brake cylinder and supplies the brake system with brake fluid. The vacuum brake booster reduces the force on the brake pedal, thereby making driving easier.


The brake mechanism of the front wheel is disc with a movable caliper. It fits well into the wheel, has a small number of parts, including seals and a small mass. Because heat transfer occurs through one cylinder, the brake fluid heats up less.

The handbrake acts on the rear wheels via a cable drive. The front and rear brake pads are automatically adjusted so that adjustment of the rear brakes is only necessary in case of repairs in which the brake system is disassembled. The rear brake pads use brake pads of different thicknesses to ensure proportional wear. Brake pads generate brake dust, which contains asbestos, which is harmful to health. Therefore, when cleaning brake pads, do not use compressed air or inhale dust. When driving on a wet road, it is recommended to depress the brake pedal from time to time to remove harmful inclusions from the brake discs. Due to centrifugal force, water is discharged from the brake discs during movement, but a thin film of silicone fats, rubber residues, grease and dirt remains on them, which reduce braking efficiency. When stopping the vehicle after driving in the rain at the end of the journey, it is recommended to dry the brakes by depressing the brake pedal.

After installing new brake pads, they should run in. For the first 200 km of run, it is not recommended to make maximum braking without the need. Corroded brake discs cause a vibration effect during braking, which does not disappear during prolonged braking. In this case, the brake discs must be replaced.