Mercedes’ AirMatic suspension, which provides an adjustable and smooth ride, is prone to air leaks from the air struts or the air compressor, causing the vehicle to lose its proper ride height and potentially leading to handling issues and uneven tire wear.

The fluid-filled engine mounts in Mercedes vehicles, designed for superior noise and vibration dampening, can deteriorate over time. When they fail, they can cause excessive engine movement and noticeable vibrations, particularly at idle.

Certain Mercedes models may face transmission glitches, such as abrupt gear changes, hesitation during acceleration, or even total failure of the transmission control unit, which requires expert diagnostics and potentially costly repairs.

With sophisticated electrical systems come potential malfunctions. This can include the COMAND system, which controls entertainment and navigation functions, or issues with the Electronic Ignition Switch, which can prevent the car from starting.

Gasket and seal degradation can cause oil leaks in Mercedes engines. Common areas include the oil cooler seals and valve cover gaskets, which can lead to oil finding its way onto hot engine or exhaust parts, creating a risk of smell and smoke.

Failure in the catalytic converter can occur due to age or internal component failure, leading to a loss of power, a sulfur smell from the exhaust, and an illuminated check engine light.