2010 Mercedes-Benz CL63 AMG

The 2010 Mercedes-Benz CL63 AMG is a high-performance coupe known for its luxurious features and powerful engine. The CL63 AMG features a 6.2L naturally aspirated V8 engine producing 518 horsepower and 465 lb-ft of torque. Some owners praise the car’s powerful engine, luxurious interior, and comfortable ride. Common complaints include expensive maintenance, potential for costly repairs, and complex electronics. Other engine options for the CL-Class include the CL550 and CL600 with a V12 Engine.

Engine

6.2L M156 V8 Engine

• Camshaft Adjuster Bolts Failure
  • Description/Symptoms: The original camshaft adjuster bolts (also known as camshaft sprocket bolts) are prone to failure. These bolts can shear off, leading to significant engine damage. Symptoms include engine misfires, check engine light, and loud ticking or knocking noises.
  • Solution: Replace the original camshaft adjuster bolts with the updated, stronger bolts. This is often done as a preventative measure.
  • Estimated Cost to Fix: $2,000 - $5,000+ (depending on whether damage occurred)
  • Recalls: None Found
• Valve Lifter/Tappet Noise
  • Description/Symptoms: Ticking or rattling noise, especially at cold start. This can be due to worn or sticking hydraulic valve lifters (tappets).
  • Solution: Replacement of the affected valve lifters.
  • Estimated Cost to Fix: $1,500 - $4,000+ (depending on the number of lifters needing replacement)
  • Recalls: None Found
• Intake Manifold Failure
  • Description/Symptoms: Cracking or warping of the plastic intake manifold. This can cause vacuum leaks, rough idling, and a check engine light.
  • Solution: Replacement of the intake manifold.
  • Estimated Cost to Fix: $800 - $1,500+
  • Recalls: None Found

Transmission

7G-Tronic (722.9) 7-Speed Automatic Transmission

• Valve Body Issues
  • Description/Symptoms: Harsh or erratic shifting, delayed engagement, slipping between gears, or getting stuck in gear. Often related to wear in the valve body, specifically the conductor plate.
  • Solution: Replacement of the valve body or conductor plate. In some cases, a complete transmission rebuild or replacement is necessary.
  • Estimated Cost to Fix: $800 - $4,000+ (depending on the extent of the damage and repair needed)
  • Recalls: None Found
• Torque Converter Failure
  • Description/Symptoms: Shuddering or vibrations at low speeds, especially during acceleration. Possible stalling or difficulty shifting.
  • Solution: Replacement of the torque converter.
  • Estimated Cost to Fix: $1,500 - $3,500+
  • Recalls: None Found

Suspension

• Airmatic Suspension Failure
  • Description/Symptoms: The Airmatic air suspension system is prone to leaks in the air struts/shocks. Symptoms include the car sitting unevenly, sagging suspension, a “car too low” warning light, and a noisy air compressor.
  • Solution: Replacement of the leaking air struts/shocks. In some cases, the air compressor or valve block may also need replacement.
  • Estimated Cost to Fix: $1,500 - $4,000+ per strut/shock. $500 - $1,500 for the compressor.
  • Recalls: None Found
• ABC (Active Body Control) Suspension Issues
  • Description/Symptoms: Similar to Airmatic, ABC systems can experience leaks, leading to uneven ride height, sagging, and warning lights. ABC systems utilize hydraulic fluid and are known for their complexity and potential for expensive repairs.
  • Solution: Diagnosis and repair of the leaking hydraulic lines, accumulators (spheres), or pump.
  • Estimated Cost to Fix: $1,000 - $5,000+ (depending on the component needing repair or replacement)
  • Recalls: None Found

Electrical

• Electronic Control Unit (ECU) Failures
  • Description/Symptoms: Various electrical malfunctions, including engine stalling, transmission problems, and malfunctioning sensors.
  • Solution: Diagnosis and reprogramming or replacement of the faulty ECU.
  • Estimated Cost to Fix: $800 - $2,500+
  • Recalls: None Found
• Battery Drain Issues
  • Description/Symptoms: The car battery drains quickly, especially if the car sits for extended periods. This can be caused by a faulty component not shutting down properly.
  • Solution: Diagnosis of the parasitic drain and repair or replacement of the faulty component.
  • Estimated Cost to Fix: $100 - $1,000+ (depending on the source of the drain)
  • Recalls: None Found

Exterior

• No Issues Found

Interior

• Sunroof Issues
  • Description/Symptoms: Sunroof malfunction, including getting stuck, making excessive noise, or leaking.
  • Solution: Repair or replacement of the sunroof mechanism or motor.
  • Estimated Cost to Fix: $500 - $2,000+
  • Recalls: None Found

Summary

The 2010 Mercedes-Benz CL63 AMG, while offering a luxurious experience and powerful performance, is prone to a range of issues, particularly with its engine, transmission, and suspension systems. The M156 engine’s camshaft adjuster bolts are a well-known weak point, and the Airmatic/ABC suspension systems are complex and can be expensive to maintain. Electrical issues and sunroof malfunctions are also common complaints. The severity of these issues ranges from minor inconveniences to major repairs, and the cost to fix can be significant, potentially reaching several thousand dollars for some components. Potential buyers should be aware of these potential pitfalls and factor them into their purchasing decision, including a thorough inspection by a qualified mechanic before buying.