2011 Mercedes-Benz CL63 AMG

The 2011 Mercedes-Benz CL63 AMG is a high-performance coupe that blends luxury with impressive power. The primary engine option for this model year is the M157 5.5-liter twin-turbo V8, producing around 536 horsepower and 590 lb-ft of torque (with the optional Performance Package, it could reach 563 hp and 664 lb-ft). The engine is paired with the AMG Speedshift MCT 7-speed automatic transmission. Owners generally appreciate the CL63 AMG for its potent engine, luxurious interior, and comfortable ride. Criticisms often revolve around high maintenance costs and the complexity of the car’s systems.

Engine

M157 5.5L Twin-Turbo V8

• Turbocharger Failure
  • Description/Symptoms: Whining noise from the turbochargers, loss of power, check engine light.
  • Solution: Replace faulty turbocharger(s).
  • Estimated Cost to Fix: $3,000 - $6,000+ per turbocharger (including labor)
• Oil Leaks from Valve Cover Gaskets and Camshaft Adjusters
  • Description/Symptoms: Oil dripping onto exhaust components, burning smell, low oil level.
  • Solution: Replace valve cover gaskets and/or camshaft adjuster seals.
  • Estimated Cost to Fix: $500 - $1500+
• High Pressure Fuel Pump (HPFP) Failure
  • Description/Symptoms: Long cranking times, rough idle, stalling, check engine light.
  • Solution: Replace the HPFP.
  • Estimated Cost to Fix: $1,500 - $2,500+

Recalls: None Found

Transmission

AMG Speedshift MCT 7-Speed Automatic

• Rough or Delayed Shifting
  • Description/Symptoms: Harsh shifts, delays when shifting between gears, particularly when cold.
  • Solution: Transmission service (fluid and filter change). In some cases, valve body repair or replacement may be necessary.
  • Estimated Cost to Fix: Transmission service $500+, Valve body repair/replacement $1,500 - $3,000+
• Torque Converter Issues
  • Description/Symptoms: Shuddering or vibrations at low speeds, particularly during light acceleration.
  • Solution: Torque converter replacement.
  • Estimated Cost to Fix: $2,000 - $4,000+ Recalls: None Found

Suspension

• Air Suspension Failure (Airmatic)
  • Description/Symptoms: Vehicle sitting low or unevenly, suspension warning lights, compressor running constantly or not at all.
  • Solution: Replace faulty air struts, air compressor, or valve block.
  • Estimated Cost to Fix: Air struts $1,000 - $2,500+ per strut, compressor $800 - $1,500+, valve block $500 - $1,000+ Recalls: None Found

Electrical

• Battery Drain Issues
  • Description/Symptoms: Car failing to start, requiring frequent jump starts.
  • Solution: Diagnose and repair parasitic drain. Could be related to faulty modules (e.g., seat control, infotainment).
  • Estimated Cost to Fix: $200 - $1,000+ (depending on the source of the drain)
• COMAND System Malfunctions
  • Description/Symptoms: Screen freezing, navigation issues, audio problems, Bluetooth connectivity issues.
  • Solution: Software update, replacement of COMAND unit.
  • Estimated Cost to Fix: $300 - $2,000+

Recalls: None Found

Exterior

• Headlight Condensation
  • Description/Symptoms: Moisture buildup inside the headlight housing.
  • Solution: Resealing headlight housing, replacing headlight assembly.
  • Estimated Cost to Fix: $200 - $1,000+ per headlight

Recalls: None Found

Interior

• Sunroof Issues
  • Description/Symptoms: Sunroof failing to open or close, making unusual noises.
  • Solution: Sunroof track repair, motor replacement.
  • Estimated Cost to Fix: $300 - $1,500+
• Seat Control Module Failure
  • Description/Symptoms: Seat adjustments not working, memory seat function not working.
  • Solution: Replace seat control module.
  • Estimated Cost to Fix: $500 - $1,200+

Recalls: None Found

Summary

The 2011 Mercedes-Benz CL63 AMG, while offering exhilarating performance and luxurious features, can be plagued by several potentially costly issues. Engine problems such as turbocharger failures and oil leaks are common, while the transmission can exhibit rough shifting. The air suspension is also prone to failure, and electrical issues can be difficult and expensive to diagnose. Potential buyers should be aware of these issues and factor in the cost of potential repairs when considering the purchase of this vehicle. Pre-purchase inspections by qualified Mercedes-Benz technicians are highly recommended. The severity of the issues can range from minor inconveniences to major mechanical failures, resulting in repair costs from a few hundred dollars to upwards of several thousand dollars for major components.