In any season or road condition, 4MATIC? all-wheel drive adds to your confidence and control. Always engaged and optimizing torque to every wheel, 4MATIC integrates with our standard Electronic Stability Program (ESP®) for maximum effectiveness in corners and slippery conditions. It also incorporates our 4-wheel Electronic Traction System (4-ETS), which monitors for the first sign of wheel slip and responds to ensure that torque is sent to the wheels with the best grip, even if that's only one wheel.