2011 Mercedes-Benz SL65 AMG

The 2011 Mercedes-Benz SL65 AMG is a high-performance roadster known for its immense power and luxurious features. The SL65 AMG features a 6.0L Twin-Turbocharged V12 engine producing 621 horsepower and 738 lb-ft of torque. Other SL models in 2011 offered V6 and V8 engine options with varying levels of performance. The SL65 AMG is mated to a 5-speed automatic transmission. Common praises include its blistering acceleration and opulent interior, while criticisms often target its high running costs, complex electronics, and firm ride.

Engine

6.0L Twin-Turbocharged V12

• Coil Pack Failure
  • Description/Symptoms: Misfires, rough running engine, check engine light.
  • Solution: Replace faulty coil pack(s).
  • Estimated Cost to Fix: $300 - $600+ (depending on how many need replacing)
  • Recalls: None Found
• Oil Leaks (Valve Cover Gaskets, Oil Cooler Lines)
  • Description/Symptoms: Visible oil leaks on the engine, burning smell, low oil level.
  • Solution: Replace valve cover gaskets, oil cooler lines.
  • Estimated Cost to Fix: $500 - $1500+ (depending on the source of the leak)
  • Recalls: None Found
• Turbocharger Issues (Wastegate Actuator, Turbo Failure)
  • Description/Symptoms: Loss of power, whining noise from the turbochargers, check engine light.
  • Solution: Replace or repair wastegate actuator, replace turbocharger(s).
  • Estimated Cost to Fix: $1000 - $5000+ (depending on the extent of the damage)
  • Recalls: None Found

Transmission

5-Speed Automatic

• Torque Converter Failure
  • Description/Symptoms: Shuddering during acceleration, especially at lower speeds, harsh shifting, slipping.
  • Solution: Replace the torque converter.
  • Estimated Cost to Fix: $1500 - $3000+
  • Recalls: None Found
• Valve Body Issues
  • Description/Symptoms: Erratic shifting, harsh shifting, failure to shift, transmission stuck in gear.
  • Solution: Replace or rebuild the valve body.
  • Estimated Cost to Fix: $800 - $2500+
  • Recalls: None Found

Suspension

• ABC (Active Body Control) System Leaks/Failures
  • Description/Symptoms: Sagging suspension, especially after the car is parked, warning lights on the dashboard, rough ride, uneven ride height.
  • Solution: Replace leaking ABC hoses, struts, or pump. System flush.
  • Estimated Cost to Fix: $1000 - $4000+ (depending on the component failing)
  • Recalls: None Found
• ABC Pump Failure
  • Description/Symptoms: Whining noise from the pump, suspension malfunctions, warning lights.
  • Solution: Replace the ABC pump.
  • Estimated Cost to Fix: $1500 - $3000+
  • Recalls: None Found

Electrical

• SAM (Signal Acquisition Module) Failure
  • Description/Symptoms: Various electrical malfunctions, including lighting issues, problems with wipers, issues with door locks and windows.
  • Solution: Replace the faulty SAM unit and reprogram.
  • Estimated Cost to Fix: $800 - $2000+
  • Recalls: None Found
• Battery Drain Issues
  • Description/Symptoms: Car battery frequently drains, especially when parked for extended periods.
  • Solution: Diagnose parasitic drain, replace faulty components causing the drain (e.g., faulty modules, relays).
  • Estimated Cost to Fix: $200 - $1000+ (depending on the source of the drain)
  • Recalls: None Found

Exterior

• Convertible Top Malfunctions
  • Description/Symptoms: Top fails to open or close, gets stuck halfway, hydraulic leaks, error messages.
  • Solution: Repair or replace hydraulic cylinders, hoses, or pump. Check sensors and wiring.
  • Estimated Cost to Fix: $500 - $3000+ (depending on the complexity of the issue)
  • Recalls: None Found

Interior

• COMAND System Issues
  • Description/Symptoms: Navigation malfunctions, audio system problems, screen freezing or failing, Bluetooth connectivity issues.
  • Solution: Software update, replace faulty COMAND unit.
  • Estimated Cost to Fix: $300 - $2000+
  • Recalls: None Found
• Seat Heater Malfunctions
  • Description/Symptoms: Seat heaters not working, overheating, or only working intermittently.
  • Solution: Replace faulty seat heating elements or control module.
  • Estimated Cost to Fix: $300 - $1000+ (per seat)
  • Recalls: None Found

In summary, the 2011 Mercedes-Benz SL65 AMG, while offering incredible performance and luxury, is prone to a number of potentially expensive issues. The engine, particularly its turbochargers and supporting systems, can be a source of significant costs. The ABC suspension is another area of concern due to its complexity and sensitivity to maintenance. Electrical gremlins and issues with the convertible top can also arise. Overall, owning an SL65 AMG requires careful maintenance and budgeting for potential repairs.