2011 Mercedes-Benz CL65 AMG

The 2011 Mercedes-Benz CL65 AMG is a high-performance luxury coupe that delivers exhilarating power and opulent features. It was only available with a single engine option, a hand-built 6.0L Twin-Turbo V12 producing 621 horsepower and 738 lb-ft of torque. This engine was paired exclusively with a 5-speed automatic transmission. Owners generally appreciate the car’s immense power, luxurious appointments, and exclusivity. However, the complex nature of the car, combined with the high cost of parts and maintenance, are often cited as drawbacks.

Engine

6.0L Twin-Turbo V12 (M275)

• Oil Leaks
  • Description/Symptoms: Oil leaks from various locations on the engine, including valve cover gaskets, oil pan gasket, and turbocharger oil lines. Symptoms can include visible oil leaks, burning oil smell, and low oil level.
  • Solution: Replacing the leaking gaskets or lines.
  • Estimated Cost to Fix: $200 - $2000+ (depending on the location and severity of the leak)
  • Recalls: None Found
• Ignition Coil Failure
  • Description/Symptoms: Misfires, rough running, and a check engine light. Often caused by failure of individual ignition coils due to age and heat exposure.
  • Solution: Replacing the faulty ignition coil(s).
  • Estimated Cost to Fix: $150 - $500+ (per coil, depending on location and labor)
  • Recalls: None Found
• Turbocharger Issues
  • Description/Symptoms: Reduced power, boost leaks, unusual noises from the turbochargers, and/or excessive oil consumption. Can be caused by worn turbocharger seals or damaged impellers.
  • Solution: Repairing or replacing the turbochargers.
  • Estimated Cost to Fix: $2,000 - $8,000+ (per turbo, depending on the extent of the damage)
  • Recalls: None Found

Transmission

5-Speed Automatic (722.6)

• Slipping or Harsh Shifting
  • Description/Symptoms: Delayed engagement, slipping between gears, or harsh shifts. Can be caused by worn friction plates, low transmission fluid, or a faulty valve body.
  • Solution: Transmission service (fluid and filter change), valve body repair or replacement, or complete transmission rebuild or replacement.
  • Estimated Cost to Fix: $300 - $6,000+ (depending on the severity of the issue and the required repair)
  • Recalls: None Found
• Torque Converter Failure
  • Description/Symptoms: Shuddering, stalling, or a complete loss of drive. Can be caused by internal damage to the torque converter.
  • Solution: Torque converter replacement.
  • Estimated Cost to Fix: $1,500 - $3,000+
  • Recalls: None Found

Suspension

• ABC (Active Body Control) System Leaks/Failure
  • Description/Symptoms: The ABC system controls the vehicle’s ride height and roll control. Leaks can occur in the hydraulic lines, struts, or pump. Symptoms include the car sitting unevenly, warning messages on the dashboard, and a stiff or bouncy ride. Pump failure can also occur.
  • Solution: Replacing leaking lines, struts, or the ABC pump.
  • Estimated Cost to Fix: $500 - $5,000+ (depending on the part and the extent of the damage. ABC pump replacements can be very expensive)
  • Recalls: None Found

Electrical

• Battery Drain
  • Description/Symptoms: The battery drains quickly, especially if the car is left sitting for a few days. Can be caused by a parasitic draw from a faulty module or component.
  • Solution: Diagnosing and repairing the source of the parasitic draw.
  • Estimated Cost to Fix: $200 - $1,000+ (depending on the complexity of the issue)
  • Recalls: None Found
• SAM (Signal Acquisition Module) Failure
  • Description/Symptoms: Various electrical issues, such as lights not working, wipers malfunctioning, or other electronic systems failing to operate correctly. The SAM modules control many of the car’s electrical functions.
  • Solution: Replacing the faulty SAM module.
  • Estimated Cost to Fix: $500 - $1,500+
  • Recalls: None Found

Exterior

• No Issues Found

Interior

• Headliner Sagging
  • Description/Symptoms: The headliner material detaches from the backing and sags down.
  • Solution: Replacing or re-gluing the headliner.
  • Estimated Cost to Fix: $500 - $1,500+
  • Recalls: None Found
• Command System Issues
  • Description/Symptoms: The COMAND system (Mercedes’ infotainment system) can experience various issues, such as screen malfunctions, software glitches, or failure to read media.
  • Solution: Software updates, or replacement of the COMAND unit.
  • Estimated Cost to Fix: $300 - $2,000+
  • Recalls: None Found

Summary

The 2011 Mercedes-Benz CL65 AMG, while offering immense power and luxury, can be prone to a variety of expensive issues. Engine oil leaks and ignition coil failures are common concerns. The ABC suspension system is another area that often requires costly repairs. Electrical issues with battery drain and SAM module failures can also arise. Transmission problems, while less frequent, can also be costly. Overall, prospective owners should be prepared for potentially high maintenance costs due to the car’s complex systems and high-performance components. The severity of the issues can range from minor inconveniences to major mechanical failures, with repair costs spanning from a few hundred dollars to several thousands for major components like the turbochargers or ABC pump.