Common problems with Mercedes-Benz S-klassse (W221)

The Mercedes S (W221) engines are highly reliable and durable. At the same time, they are characterized by some typical problems:

• Intake manifold in petrol units (production models). This problem has been resolved since 2009.
• Catalyst catalysts that make it impossible to make a car (this is often due to poor fuel quality).
• The failure of the turbine of diesel motors after 250-300,000 litres. km
• Debris of diesel engines due to low fuel quality.