2015 Mercedes-Benz CLS500

The 2015 Mercedes-Benz CLS500 is a stylish and luxurious four-door coupe. It combines sleek aesthetics with a comfortable ride. The CLS500 is equipped with a 4.7-liter twin-turbo V8 engine producing 402 horsepower and 443 lb-ft of torque, paired with a 7-speed automatic transmission (7G-TRONIC PLUS). Other engine options for the CLS class include the CLS400 with a 3.0L V6 and the high-performance CLS63 AMG with a 5.5L or 5.5L twin-turbo V8. Many owners appreciate the CLS500’s refined driving experience, opulent interior, and distinctive design. Some common complaints revolve around the complex electronics, potential for costly repairs, and occasional issues with the air suspension.

Engine

4.7L Twin-Turbo V8

• Oil Leaks
  • Description/Symptoms: Oil leaks are commonly reported from various seals and gaskets. These can manifest as visible oil puddles under the car, a burning oil smell, or low oil levels. The valve cover gaskets and oil cooler lines are common sources.
  • Solution: Replacement of the leaking seals or gaskets. Thorough cleaning of affected areas is also recommended.
  • Estimated Cost to Fix: $200 - $1,500+ depending on the location and severity of the leak.
  • Recalls: None Found
• Turbocharger Issues
  • Description/Symptoms: Whining noises from the turbochargers, reduced power, and potentially turbo failure.
  • Solution: Diagnostic check to determine if it is a turbo or line issue. Replacement of the turbochargers or repair of related components (hoses, etc.).
  • Estimated Cost to Fix: $2,000 - $5,000+ depending on the extent of the damage.
  • Recalls: None Found

Transmission

7G-TRONIC PLUS (7-Speed Automatic)

• Rough Shifting
  • Description/Symptoms: Hesitation or jerking during gear changes, particularly at lower speeds. This can also be noticeable when the transmission is cold.
  • Solution: Transmission fluid flush and filter change. In some cases, valve body repair or replacement is necessary.
  • Estimated Cost to Fix: $300 - $2,500+ depending on the cause and extent of repair.
  • Recalls: None Found

Suspension

• AIRMATIC Air Suspension Problems
  • Description/Symptoms: The AIRMATIC suspension can develop leaks in the air struts or compressor, leading to a sagging suspension, uneven ride height, or a “suspension malfunction” warning light.
  • Solution: Replacement of the faulty air strut(s) or air compressor. Diagnosis of the air lines and valve block for leaks is also crucial.
  • Estimated Cost to Fix: $800 - $3,000+ per strut/compressor depending on location and repair shop.
  • Recalls: None Found

Electrical

• Battery Drain
  • Description/Symptoms: The battery may drain quickly, especially if the car sits unused for a few days. This can be caused by a faulty module that doesn’t fully shut down, a parasitic draw, or an aging battery.
  • Solution: Diagnostic testing to identify the source of the drain. Replacement of the faulty module or battery.
  • Estimated Cost to Fix: $150 - $800+ depending on the cause.
  • Recalls: None Found
• COMAND System Issues
  • Description/Symptoms: The COMAND infotainment system can experience glitches, freezing, or failure to boot.
  • Solution: Software update, reset, or replacement of the COMAND unit.
  • Estimated Cost to Fix: $100 - $2,000+ depending on the issue and if replacement is necessary.
  • Recalls: None Found

Exterior

• Sunroof Issues
  • Description/Symptoms: The sunroof mechanism can malfunction, leading to difficulties opening or closing, unusual noises, or water leaks.
  • Solution: Cleaning and lubrication of the sunroof tracks and mechanism. Repair or replacement of faulty components.
  • Estimated Cost to Fix: $200 - $1,000+ depending on the complexity of the repair.
  • Recalls: None Found

Interior

• Dashboard Delamination/Cracking
  • Description/Symptoms: The dashboard, particularly on models exposed to high heat, can develop cracks or delamination, affecting the appearance of the interior.
  • Solution: Replacement of the dashboard. Repair of the dashboard may be possible, but the results are not always satisfactory.
  • Estimated Cost to Fix: $1,000 - $3,000+ depending on the extent of the damage and the replacement parts.
  • Recalls: None Found

Summary

The 2015 Mercedes-Benz CLS500 presents a mix of potential issues, ranging from minor electrical glitches to more significant concerns with the engine, transmission, and air suspension. The air suspension and turbo issues can be costly to repair and should be inspected carefully before purchase. While the car offers luxury and performance, potential owners should be aware of these common complaints and factor them into their ownership costs.