DISTRONIC PLUS (with PRE-SAFE Brake)

This advanced, radar-based cruise control monitors the vehicle ahead and adjusts your speed to help maintain a chosen following distance. It can even bring the car to a halt if it senses stopped traffic, then resume automatically. Should the car ahead slow to a stop suddenly, the PRE-SAFE Brake system can automatically engage up to 40% of available braking power and issue an audiovisual alarm. If you still haven't applied the brakes within 0.6 seconds of a calculated impact, it automatically engages 100% braking power.

Disclaimer

DISTRONIC PLUS adaptive cruise control is no substitute for active driving involvement. It does not react to stationary objects, nor recognize or predict the curvature and lane layout of the road or the movement of vehicles ahead. It is the driver's responsibility at all times to be attentive to traffic and road conditions, and to provide the steering, braking and other driving inputs necessary to retain control of the vehicle. Drivers are cautioned not to wait for the DISTRONIC Proximity Warning System before braking, as that may not afford sufficient time and distance to brake safely. After braking the car for stopped traffic ahead, system resumes automatically only if traffic pauses for less than 3 seconds. Braking effectiveness also depends on proper brake maintenance, and tire and road conditions.