Reliability Guide

Mercedes-Benz S-Class (W220) Problems by Year

The Mercedes-Benz S-Class (W220) was a landmark luxury saloon that introduced complex technologies like Airmatic and ABC hydraulic suspension, radar cruise control, and COMAND navigation to the masses. Positioned as the pinnacle of executive luxury in the early 2000s, it has now plummeted into the budget-car price bracket, making it an incredibly tempting but dangerous used buy in the UK. It is now of an age where aggressive structural rust, wiring harness degradation, air suspension collapse, and SBC brake faults make ownership a financial lottery. It suits brave DIY mechanics or enthusiasts who want cheap, top-tier luxury and have the budget to maintain an incredibly complex classic.

Select a year below to see the specific problems affecting that model year, with estimated repair costs and severity ratings.

5
Year Periods
3
Known Issues
3
Serious Faults
0
Moderate Issues

Select a Year Period

Browse Mercedes-Benz S-Class (W220) in our Directory

View MOT history, registration data, and reliability scores for the Mercedes-Benz Mercedes-Benz S-Class (W220).

View Mercedes-Benz S-Class (W220) Directory

Buying Tips for the Mercedes-Benz S-Class (W220)

  • Inspect the entire body for severe rust; the wheel arches, door bottoms, and boot lid are notorious for rotting badly due to poor factory paint.
  • Check the Airmatic or ABC suspension system; ensure the car does not sit low on one side, and listen for a strained compressor working overtime.
  • Verify the operation of the Sensotronic Brake Control (SBC) on pre-facelift cars; if the pump has reached its cycle limit, it will require an expensive replacement.
  • Test the COMAND infotainment and navigation system, as the units frequently fail and drain the battery while the car is parked.
  • Ensure the soft-close doors and boot operate smoothly; the pneumatic pump in the boot often burns out due to air leaks in the lines.
  • Check the front footwells for dampness; blocked reed valves in the scuttle panel will flood the costly SAM (Signal Acquisition Module) electrical units.