2014 Mercedes-Benz CL600

The 2014 Mercedes-Benz CL600 is a luxury coupe that boasts a powerful V12 engine and opulent features. The CL-Class is known for its smooth ride, luxurious interior, and advanced technology. Some owners appreciate the car’s comfortable ride and powerful acceleration, while others find its maintenance costs and complex electronics challenging. The 2014 CL-Class was also offered with a 4.6L Twin Turbo V8 in the CL550, and a 5.5L Twin Turbo V8 in the CL63 AMG. The CL600 is powered by a 6.0L Twin Turbo V12 engine, producing 523 horsepower and 612 lb-ft of torque and is paired with a 5-speed automatic transmission.

Engine

6.0L Twin Turbo V12

• Oil Leaks
  • Description/Symptoms: Oil leaks, often originating from the valve cover gaskets, turbocharger oil lines, or oil cooler lines. Visible oil drips under the car, burning oil smell, and low oil levels.
  • Solution: Replacing the leaking gaskets and seals.
  • Estimated Cost to Fix: $200 - $1,500+ depending on the location and severity of the leak.
  • Recalls: None Found
• Ignition Coil Failure
  • Description/Symptoms: Misfires, rough idling, and reduced engine power. The check engine light may illuminate.
  • Solution: Replacing the faulty ignition coil(s).
  • Estimated Cost to Fix: $150 - $500+ per coil, depending on labor.
  • Recalls: None Found
• Turbocharger Issues
  • Description/Symptoms: Reduced engine power, whistling or whining noises from the engine bay, and excessive smoke from the exhaust.
  • Solution: Inspecting and potentially replacing the turbocharger(s).
  • Estimated Cost to Fix: $2,000 - $6,000+ per turbocharger.
  • Recalls: None Found

Transmission

5-Speed Automatic

• Transmission Slipping/Harsh Shifting
  • Description/Symptoms: Delayed gear changes, slipping between gears, harsh or jerky shifting, and overall poor transmission performance.
  • Solution: Transmission fluid flush, valve body repair/replacement, or complete transmission rebuild/replacement.
  • Estimated Cost to Fix: $300 for fluid flush, $800 - $2,000+ for valve body work, $3,000 - $7,000+ for rebuild/replacement.
  • Recalls: None Found

Suspension

• Airmatic Suspension Failure
  • Description/Symptoms: Vehicle sagging or sitting unevenly, a harsh or bouncy ride, and error messages on the dashboard related to the suspension system.
  • Solution: Replacing faulty air struts, air compressor, or air lines.
  • Estimated Cost to Fix: $800 - $2,000+ per air strut, $500 - $1,500+ for the compressor.
  • Recalls: None Found

Electrical

• COMAND System Issues
  • Description/Symptoms: Malfunctions with the navigation, audio, and climate control systems, including freezing, rebooting, or complete failure.
  • Solution: Software updates, replacement of the COMAND unit.
  • Estimated Cost to Fix: $200 - $500+ for software updates, $1,000 - $3,000+ for unit replacement.
  • Recalls: None Found
• Battery Drain
  • Description/Symptoms: The car battery drains quickly, especially when the car is not driven for a few days.
  • Solution: Diagnosing and repairing the source of the parasitic drain, which could be a faulty module, relay, or wiring issue.
  • Estimated Cost to Fix: $100 - $500+ for diagnosis, plus the cost of repairing or replacing the faulty component.
  • Recalls: None Found
• Sensor Failures
  • Description/Symptoms: Malfunctions with various sensors, such as the tire pressure monitoring system (TPMS), parking sensors, and oxygen sensors.
  • Solution: Replacing the faulty sensor(s).
  • Estimated Cost to Fix: $100 - $500+ per sensor, depending on the location and complexity.
  • Recalls: None Found

Exterior

• No Issues Found

Interior

• Sunroof Malfunction
  • Description/Symptoms: Sunroof fails to open or close properly, gets stuck, or makes unusual noises during operation.
  • Solution: Repair or replacement of the sunroof motor, tracks, or other components.
  • Estimated Cost to Fix: $300 - $1,500+.
  • Recalls: None Found

Summary

The 2014 Mercedes-Benz CL600, while luxurious and powerful, can present owners with a range of potential issues. The most common problems revolve around the engine, transmission, suspension, and electrical systems, particularly issues surrounding the complex Airmatic suspension, and the V12 engine. Repairs can be expensive, especially those involving the engine and suspension. Potential buyers should be aware of these potential issues and factor in the cost of maintenance and repairs when considering a 2014 CL600.