A door check 1 for vehicle doors, e.g. car doors comprising a door strap 8 for being mounted to the chassis and a retainer 2 for being mounted to the door movably and supporting the door strap 8 relative to the retainer 2 provides a particular precise control over the door movement if the retainer 2 comprises a cylinder 30 supporting a piston 40 which is spring loaded against the door strap 8 and if an actuator is configured to augment the pressure in the cylinder 30 upon demand to thereby augment the friction between the piston 40 and the door strap 8.