2001 Mercedes-Benz CLK55 AMG

The 2001 Mercedes-Benz CLK55 AMG is a performance-oriented coupe that was part of the W208 CLK-Class. It came equipped with a 5.4-liter naturally aspirated V8 engine producing 342 horsepower and 376 lb-ft of torque, paired with a 5-speed automatic transmission. Lesser CLK models were available with various V6 engines. Owners often praise the car for its powerful engine, comfortable ride, and classic Mercedes-Benz styling. Common dislikes include its age-related maintenance needs and the potential for costly repairs.

Engine

5.4L V8

• Valve Cover Gasket Leaks
  • Description/Symptoms: Oil leaks from the valve cover gaskets, leading to oil consumption, burning oil smell, and potential misfires if oil contaminates the spark plugs.
  • Solution: Replace the valve cover gaskets.
  • Estimated Cost to Fix: $300 - $600
• Mass Air Flow (MAF) Sensor Failure
  • Description/Symptoms: Poor engine performance, rough idle, hesitation during acceleration, and potential engine stalling. Check engine light illumination.
  • Solution: Replace the MAF sensor.
  • Estimated Cost to Fix: $200 - $400
• Crankshaft Position Sensor Failure
  • Description/Symptoms: Engine stalling, especially when hot. Difficulty starting the engine. Check engine light illumination.
  • Solution: Replace the crankshaft position sensor.
  • Estimated Cost to Fix: $150 - $300
• Catalytic Converter Failure
  • Description/Symptoms: Reduced engine performance, rattling noise from the exhaust system, and failed emissions test. Check engine light illumination.
  • Solution: Replace the catalytic converter(s).
  • Estimated Cost to Fix: $800 - $2000+ (depending on location and replacement type)

Transmission

5-Speed Automatic (722.6)

• Conductor Plate Failure
  • Description/Symptoms: Erratic shifting, transmission slipping, getting stuck in a single gear (limp mode), and delayed engagement.
  • Solution: Replace the conductor plate (also known as the valve body plate) and potentially the electrical connector adapter (pilot bushing).
  • Estimated Cost to Fix: $800 - $1500+
• Torque Converter Failure
  • Description/Symptoms: Shuddering during acceleration, especially at low speeds, unusual noises from the transmission area, and poor fuel economy.
  • Solution: Replace the torque converter.
  • Estimated Cost to Fix: $1500 - $3000+
• Transmission Fluid Leaks
  • Description/Symptoms: Visible leaks of red transmission fluid, difficulty shifting, and potential transmission damage due to low fluid levels.
  • Solution: Identify the source of the leak (often the pan gasket, conductor plate connector, or seals) and replace the faulty component.
  • Estimated Cost to Fix: $200 - $800+ (depending on the leak source)

Suspension

• Ball Joint Failure
  • Description/Symptoms: Clunking or rattling noises from the front suspension, especially when going over bumps. Steering that feels loose or vague. Uneven tire wear.
  • Solution: Replace the affected ball joint(s).
  • Estimated Cost to Fix: $200 - $500 per ball joint (including labor).
• Control Arm Bushing Failure
  • Description/Symptoms: Similar to ball joint failure, including clunking noises, vague steering, and uneven tire wear. Can also cause vibrations at higher speeds.
  • Solution: Replace the control arm bushings or the entire control arm assembly (often recommended).
  • Estimated Cost to Fix: $300 - $800+ per control arm (including labor).
• Shock Absorber/Strut Failure
  • Description/Symptoms: Bouncy or unstable ride, excessive body roll during cornering, and leaking fluid from the shock absorber or strut.
  • Solution: Replace the shock absorbers or struts.
  • Estimated Cost to Fix: $400 - $1000+ per pair (including labor).

Electrical

• Instrument Cluster Pixel Failure
  • Description/Symptoms: Missing or faded pixels in the instrument cluster display, making it difficult to read information like mileage, temperature, and warning messages.
  • Solution: Replacement of the instrument cluster, or repair of the LCD screen.
  • Estimated Cost to Fix: $300 - $1000+
• Window Regulator Failure
  • Description/Symptoms: Windows that move slowly, erratically, or not at all. Grinding noises when operating the windows.
  • Solution: Replace the window regulator.
  • Estimated Cost to Fix: $300 - $600
• Central Locking System Malfunctions
  • Description/Symptoms: Doors that fail to lock or unlock with the remote or central locking button. Intermittent operation of the central locking system.
  • Solution: Diagnose and repair the faulty component, which could be a door lock actuator, the central locking module, or wiring issues.
  • Estimated Cost to Fix: $200 - $500+

Exterior

• Rust
  • Description/Symptoms: Rust formation in various areas, commonly wheel wells, rocker panels, and around the trunk lid.
  • Solution: Repair or replace rusted panels, treat with rust inhibitor, and repaint.
  • Estimated Cost to Fix: $200+ (depending on severity and location)

Interior

• Sunroof Issues
  • Description/Symptoms: Sunroof jams, slow or noisy operation, or failure to open or close completely.
  • Solution: Repair or replace the sunroof mechanism, lubricate tracks, and check for obstructions.
  • Estimated Cost to Fix: $300 - $800+

Recalls None Found

Summary The 2001 Mercedes-Benz CLK55 AMG, while a desirable performance vehicle, is susceptible to age-related issues common to older Mercedes-Benz models. Engine and transmission problems, particularly related to leaks and electronic components, are common. Suspension components wear out over time, and electrical issues can affect various systems. Rust can be a concern in certain climates. The severity and cost of repairs can vary widely, but owners should be prepared for potentially expensive maintenance.