2011 Mercedes-Benz S600

The 2011 Mercedes-Benz S600 is a luxury sedan boasting a twin-turbocharged 5.5L V12 engine producing 510 horsepower and 612 lb-ft of torque. Other engine options for the 2011 S-Class included various V6 and V8 configurations. The S600 provides a smooth ride and luxurious interior. However, some common criticisms include high maintenance costs and complex electronics that can be prone to failure. The S600 comes exclusively with a 5-speed automatic transmission.

Engine

5.5L Twin-Turbocharged V12

• Oil Leaks
  • Description/Symptoms: Oil leaks can develop from various locations, including valve cover gaskets, oil pan gasket, and turbocharger oil lines. Symptoms include visible oil leaks under the car, burning oil smell, and low oil level.
  • Solution: Replacing the leaking gaskets or lines.
  • Estimated Cost to Fix: $200 - $1500+, depending on the location and complexity of the repair.
  • Recalls: None Found
• Ignition Coil Failure
  • Description/Symptoms: Misfires, rough idling, check engine light illumination.
  • Solution: Replacing the faulty ignition coil(s).
  • Estimated Cost to Fix: $200 - $600+ per coil, including labor.
  • Recalls: None Found

Transmission

5-Speed Automatic

• Torque Converter Failure
  • Description/Symptoms: Shuddering during acceleration, abnormal transmission noises, slipping between gears, harsh or delayed shifting.
  • Solution: Torque converter replacement
  • Estimated Cost to Fix: $1,500 - $3,500+
  • Recalls: None Found

Suspension

• Airmatic Suspension Failure
  • Description/Symptoms: Vehicle sagging on one or more corners, ride height problems, “Visit Workshop” message on the dashboard.
  • Solution: Replacing the faulty air struts, air compressor, or valve block.
  • Estimated Cost to Fix: $800 - $3,000+ per strut, plus labor for compressor or valve block replacement.
  • Recalls: None Found
• ABC (Active Body Control) Hydraulic Leaks
  • Description/Symptoms: Vehicle sagging, fluid leaks (usually hydraulic fluid), ride control problems.
  • Solution: Repair or replacement of leaking hydraulic lines, pump, or struts.
  • Estimated Cost to Fix: $500 - $3,000+, depending on the component.
  • Recalls: None Found

Electrical

• Battery Drain
  • Description/Symptoms: Dead battery, difficulty starting the car, needing frequent jump starts.
  • Solution: Diagnosing and repairing the source of the parasitic drain (e.g., faulty module, wiring issue).
  • Estimated Cost to Fix: $200 - $1000+, depending on the complexity of the issue.
  • Recalls: None Found
• COMAND System Malfunctions
  • Description/Symptoms: Navigation problems, audio issues, display glitches, system freezes.
  • Solution: Software updates, or replacement of the COMAND unit.
  • Estimated Cost to Fix: $200 - $2000+
  • Recalls: None Found
• Headlight Issues
  • Description/Symptoms: Headlights not turning on, flickering, or dimming.
  • Solution: Replacing the headlight bulbs, ballasts, or control modules.
  • Estimated Cost to Fix: $150 - $1000+
  • Recalls: None Found

Exterior

• Sunroof Malfunctions
  • Description/Symptoms: Sunroof not opening or closing properly, getting stuck, or making unusual noises.
  • Solution: Repairing or replacing the sunroof motor, tracks, or cables.
  • Estimated Cost to Fix: $300 - $1500+
  • Recalls: None Found

Interior

• Seat Motor Failures
  • Description/Symptoms: Seats not adjusting properly or at all.
  • Solution: Repairing or replacing the seat motor(s).
  • Estimated Cost to Fix: $200 - $800+ per motor.
  • Recalls: None Found

Summary

The 2011 Mercedes-Benz S600 offers a luxurious driving experience, but ownership can come with potential headaches. The most common issues revolve around the complex air suspension, electrical systems, and the engine’s propensity for oil leaks. Repairs can be costly, particularly for the air suspension and electrical components, with some repairs easily exceeding $1,000. Potential buyers should be aware of these potential expenses and ensure a thorough pre-purchase inspection is performed.