The DBS system may fail to engage properly, leading to reduced braking assistance in emergency situations.

The M157 engine is known to suffer from oil leaks around the valve covers and oil pan gaskets.

Turbochargers on the M157 engine can wear out, leading to reduced power and efficiency.

Premature wear of the timing chain can lead to engine misfires and potentially severe engine damage.

Faulty fuel injectors can cause rough idling, poor acceleration, and increased fuel consumption.

Radiator and water pump failures can lead to engine overheating.

Direct injection engines like the M157 can suffer from carbon build-up on the intake valves, affecting performance and fuel economy.

The complex electronics in modern Mercedes-Benz vehicles can lead to various issues, from sensor failures to software glitches.

Although not directly related to the engine, the transmission can suffer from shifting problems, especially in higher mileage vehicles.

EGR valves can become clogged, leading to reduced engine efficiency and increased emissions.

The M276 engine has been known to develop oil leaks, particularly from the oil cooler and valve cover gaskets.

Some owners have reported premature wear or failure of the timing chain, which can lead to severe engine damage if not addressed.

Turbochargers can sometimes fail, leading to reduced performance and increased exhaust smoke.

Direct injection engines like the M276 can suffer from carbon build-up on intake valves, affecting engine performance and fuel efficiency.

Issues with the water pump or radiator can lead to overheating, risking engine damage.

Faulty fuel injectors can cause misfires, poor fuel economy, and rough idling.

Problems with the electronic throttle control can result in reduced engine power or unexpected acceleration issues.

A failing crankshaft position sensor can cause the engine to stall or not start at all.