Whatever the season or road condition, Mercedes-Benz 4MATIC? all-wheel drive technology can provide an extra measure of confidence and control. Fully integrated with our standard Electronic Stability Program (ESP®), which maximizes the system's effectiveness in corners and in wet or slippery conditions, 4MATIC is always engaged and optimizing torque in every wheel. And to help ensure that power translates into control, 4MATIC incorporates our 4-wheel Electronic Traction System (4-ETS), an advance that monitors for the first sign of wheel slip and adjusts power delivery accordingly. By continually ensuring that power is evenly distributed among the wheels with the best grip, 4MATIC can help keep the vehicle moving and under control even if only one wheel has traction.