The "multi function display" (mfd) screen in the dash fades with interior heat (in summer) and eventually fails over time. The mfd displays all critical vehicle operation information (such as coolant temperature warnings, electronic stability control activation, etc.), and all notification of vehicle fault codes that occur. Without the information visible, the owner can't know if there is a safety problem. There are no mechanical gauges serving as back-up. Further, the vehicle odometer is only visible in the mfd. Without an operating mfd, the owner cannot view, or certify the correct odometer mileage, required by federal law when selling the vehicle to a dealer or subsequent owner. This is a well-known fault across several Mercedes models. Dealers offer to replace the mfd, at considerable owner expense. However, because of the odometer issue, I believe that Mercedes should fix the display at zero cost to the consumer.

- Flower Mound, TX, USA