4MATIC ensures that all four wheels are driven. Together with ESP and 4ETS, 4MATIC improves the traction of your vehicle whenever a driven wheel spins due to insufficient traction. If you fail to adapt your driving style, 4MATIC can neither reduce the risk of an accident nor override the laws of physics.
4MATIC cannot take account of road, weather and traffic conditions. 4MATIC is only an aid. You are responsible especially for maintaining a safe distance from the vehicle in front, for vehicle speed, for braking in good time and for staying in lane.
% In wintry road conditions, the maximum effect of 4MATIC can be achieved only if you use winter tires (M+S tires), with snow chains if necessary.