2008 Mercedes-Benz CL63 AMG

2008 Mercedes-Benz CL63 AMG

Overview

The 2008 Mercedes-Benz CL63 AMG, a high-performance grand tourer, offers a potent blend of luxury and power. Powered by a formidable 6.2-liter V8 engine, it delivers exhilarating acceleration and a refined driving experience. While generally well-regarded for its performance capabilities, like any complex luxury vehicle, it can encounter specific issues as it ages. Owners should be aware of potential concerns primarily related to its advanced powertrain, sophisticated electronics, and the high-performance nature of its components. Regular maintenance and prompt attention to any developing problems are crucial for maintaining its optimal performance and longevity.

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Engine

6.2L V8 (M156)

Camshaft Wear

• Symptoms: Rough idle, misfires, check engine light, reduced power.
• Solution: Replacement of camshafts and associated components.
• Cost: $3,000 - $6,000

Oil Leaks (Valve Covers/Oil Cooler)

• Symptoms: Visible oil drips, burning oil smell, low oil level.
• Solution: Replacement of valve cover gaskets or oil cooler seals.
• Cost: $800 - $1,500

Cooling System Leaks

• Symptoms: Overheating, coolant loss, visible leaks from hoses or radiator.
• Solution: Replacement of hoses, radiator, or water pump.
• Cost: $700 - $1,200

Transmission

7-Speed Automatic (7G-TRONIC)

Harsh Shifting/Slipping

• Symptoms: Jerky gear changes, delayed engagement, slipping between gears.
• Solution: Transmission fluid and filter service, valve body repair, or transmission rebuild.
• Cost: $500 - $4,000

Transmission Control Module (TCM) Failure

• Symptoms: Erratic shifting, transmission warning light, inability to select gears.
• Solution: Replacement of the TCM.
• Cost: $1,000 - $2,000

Suspension

ABC (Active Body Control)

Hydraulic Leaks

• Symptoms: Vehicle sagging, suspension warning light, fluid leaks under the car.
• Solution: Repair or replacement of hydraulic lines, struts, or pump.
• Cost: $1,500 - $5,000+

Pump Failure

• Symptoms: Loss of suspension height control, loud whining noise from pump.
• Solution: Replacement of the ABC hydraulic pump.
• Cost: $1,200 - $2,500

Electrical

General Electrical System

Sensor Failures (e.g., ABS, ESP)

• Symptoms: Warning lights on the dashboard (ABS, ESP, Check Engine), erratic system behavior.
• Solution: Diagnosis and replacement of faulty sensors.
• Cost: $300 - $800

Infotainment System Glitches

• Symptoms: Screen freezing, audio issues, navigation problems.
• Solution: Software updates or replacement of head unit components.
• Cost: $500 - $1,500

Exterior

Standard Exterior

No widespread issues reported.

• Symptoms: N/A
• Solution: N/A
• Cost: Varies

Interior

Standard Interior

No widespread issues reported.

• Symptoms: N/A
• Solution: N/A
• Cost: Varies

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Summary Verdict

The 2008 Mercedes-Benz CL63 AMG is a powerful and luxurious coupe, but its advanced systems, particularly the ABC suspension and the M156 engine, can be sources of significant repair costs. While the engine and transmission are generally robust, specific components like camshafts and the transmission control module can fail. The Active Body Control suspension is known for its complexity and potential for costly hydraulic leaks or pump failures. Electrical gremlins and sensor issues are also possibilities in a vehicle of this age and complexity. Prospective buyers should be prepared for higher-than-average maintenance and repair expenses, especially concerning the specialized performance systems.