The 2016 Mercedes-Benz G550 has 4 recalls, the most serious being a steering coupling that can wear loose and cause a complete loss of steering control, and an adaptive cruise control system that can fail to reduce engine power when braking is needed, extending stopping distances.
The steering and cruise control issues tie for the highest severity. On the safety systems side, when the adaptive cruise control is active and the electronic stability program malfunctions, the engine continues delivering power even when the driver brakes, requiring additional braking effort or a manual shift to neutral to slow the vehicle. There is also a door latch concern: the cable that releases the door from inside can snap if the door is difficult to open after a crash, potentially trapping an occupant inside. The fourth recall involves a software fault in the emergency call system where an incorrect date and time can cause the system to report a wrong vehicle location to emergency responders, delaying assistance.