SuspensionHigh
Airmatic air suspension compressor and strut leaks
- Typically appears
- 70,000+ miles
- What to inspect
- Check ride height overnight and listen for the compressor cycling frequently
2013–2020 Mercedes-Benz S-Class · common problems & known faults
A supremely comfortable flagship saloon, but air suspension, electronics and expensive service items mean cheap examples often carry hidden costs.
Compiled & reviewed by the VehicleFaults Research Team · last reviewed August 2026
Quick answer
The most commonly reported faults on the 2013–2020 Mercedes-Benz S-Class are Airmatic air suspension compressor and strut leaks, COMAND infotainment and control unit software faults and Balance shaft and timing chain wear on V6 diesel units. 2 of the documented issues are rated high severity · inspect these first. Full inspection points, onset mileage and what to check are listed below.
Reliability snapshot
Based on the documented faults on this page for the Mercedes-Benz S-Class.
6.1/ 10
- Critical
- 0
- High
- 2
- Medium
- 3
- Low
- 0
Guidance only · reflects reported patterns, not a specific car's condition.
Known faults to check
ElectricalHigh
COMAND infotainment and control unit software faults
- Typically appears
- Age-related
- What to inspect
- Test every electronic feature including massage seats, cameras and screens
EngineMedium
Balance shaft and timing chain wear on V6 diesel units
- Typically appears
- 90,000+ miles
- What to inspect
- Cold start and listen carefully for rattling from the front of the engine
CoolingMedium
Coolant leaks from plastic pipes and water pump seals
- Typically appears
- 70,000+ miles
- What to inspect
- Check coolant level and inspect for staining around pipe joints
BrakesMedium
Electronic parking brake actuator failures
- Typically appears
- 70,000+ miles
- What to inspect
- Test the electronic parking brake engages and releases smoothly
Inspecting a Mercedes-Benz S-Class?
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Check this exact carFrequently asked questions
Is the S-Class costly to run?
Yes, air suspension and electronic repairs can be very expensive without a full history.
What is the most important pre-purchase check?
An overnight ride height check combined with testing every electronic comfort feature.
Which engine is the most dependable?
Later diesel and petrol V6 units with documented chain checks tend to be the safer choice.
Should I avoid cars without main dealer history?
It is strongly advisable to seek full service history given the complexity of this generation.
Sources & further reading
Faults are compiled from documented recalls, technical bulletins, owner reports and mechanic sources, then reviewed for accuracy. This is guidance only · not a substitute for a professional inspection.