ECO Assist is not available in all countries. Depending on the vehicle's equipment, different events ahead can be detected.
ECO Assist is active only in 
More.
ECO Assist analyses data for the vehicle's expected route. This allows the system to optimally adjust the driving style for the route ahead, use minimal energy and recuperate.
ECO Assist is displayed on the Assistance menuMore. If the system detects an event ahead, e.g. a vehicle ahead, and the driving style can be optimised, the event will appear on the multifunction display.
Speed limit
Downhill gradient
Junctions and roundabouts
Bends
Vehicles with Driving Assistance Package: In order for ECO Assist to react to a speed limit, the automatic adoption of speed limits must be activated More. These route events will be detected only if route-based speed adaptation is active More.
show the distance to the event ahead as follows: A few segments light up: the event ahead is near.
Many segments light up: the event ahead is further away.
If ECO Assist is active, "Foot off the accelerator" symbol will appear on the Assistance menu on the multifunction display, on the head-up display and next to the transmission position display.
When the vehicle nears an event, ECO Assist will calculate the optimal speed for minimal energy consumption based on the distance and speed. "Foot off the accelerator" recommendation will appear on the multifunction display.
If you take your foot off the accelerator pedal in good time, the remaining segments on the display will successively turn green until the event shown is reached. The drivetrain will be set for minimal energy consumption. The vehicle will recuperate autonomously and thus charge the high-voltage battery.
You can also manually increase or reduce recuperation. However, ECO Assist is available only in the setting More.
If there is no response to "Foot off the accelerator" recommendation , the segments will remain white.
The event will be shown for a short time after it has been passed.
If the event involves a vehicle in front, all segments will immediately turn green once there is a response to the "Foot off accelerator" prompt.
If ECO Assist cannot identify a recommendation for adjusting the driving style for the event ahead, nothing will be displayed. The system will be passive.
ECO Assist can function even more precisely if the route is adhered to when route guidance is active. The basic function is also available without active route guidance. Not all information and traffic situations can be foreseen. The quality depends on the available map data.
ECO Assist is only an aid. The driver is responsible for keeping a safe distance from the vehicle in front, for vehicle speed and for braking in good time. You must be ready to brake at all times irrespective of whether the system is active.
If there is poor visibility, e.g. due to insufficient illumination of the road, if there are highly variable shade conditions or in rain, snow, fog or heavy spray.
If there is glare, e.g. from oncoming traffic, direct sunlight or reflections.
If the windscreen is dirty in the vicinity of the multifunction camera.
If the multifunction camera is misted up, damaged or obscured
If road signs are hard to detect, e.g. due to dirt or snow, or because they are obscured, or due to insufficient lighting.
If the digital road map of the navigation system has incorrect or outdated information
If the signs are ambiguous, e.g. road signs on construction sites or in adjacent lanes.
If the radar sensors are dirty or obscured.
When you drive on roads with steep uphill or downhill gradients.
If there are narrow vehicles in front, such as bicycles or motorcycles.
You can watch an animation on this topic via the following link:
