2013 Mercedes-Benz ML550

The 2013 Mercedes-Benz ML550 is a mid-size luxury SUV known for its powerful engine and comfortable ride. While it offers a premium driving experience, some owners have reported specific issues. Other engine options available for the 2013 ML-Class include the ML350 (3.5L V6), the ML350 BlueTEC (3.0L Diesel V6), and the ML63 AMG (5.5L Turbo V8). The ML550 boasts a 4.7L Twin-Turbo V8 engine producing 402 horsepower and 443 lb-ft of torque. Owners often praise its acceleration, smooth handling, and luxurious interior. Common dislikes include its higher maintenance costs and complex electronics that can be prone to glitches. All engine options are paired with a 7G-TRONIC PLUS 7-speed automatic transmission.

Engine

4.7L Twin-Turbo V8

• Turbocharger Failure
  • Description/Symptoms: Whining noise from the engine, loss of power, check engine light. Turbocharger failure can lead to reduced engine performance and potential engine damage if not addressed promptly.
  • Solution: Replace the faulty turbocharger(s). Some owners opt to replace both turbos at the same time to ensure even wear.
  • Estimated Cost to Fix: $2,500 - $5,000+
  • Recalls: None Found
• Oil Leaks
  • Description/Symptoms: Oil spots under the vehicle, burning oil smell, low oil level warning. Common leak locations include valve cover gaskets, oil filter housing, and turbocharger oil lines.
  • Solution: Replace the leaking gaskets or seals. Thoroughly clean the affected area.
  • Estimated Cost to Fix: $200 - $1,500+, depending on the location of the leak.
  • Recalls: None Found

Transmission

7G-TRONIC PLUS 7-Speed Automatic

• Rough Shifting
  • Description/Symptoms: Harsh or delayed gear changes, especially between 2nd and 3rd gear. This can be more noticeable when the transmission is cold.
  • Solution: In some cases, a transmission fluid flush and software update can resolve the issue. In more severe cases, valve body replacement or transmission rebuild may be required.
  • Estimated Cost to Fix: $300 (fluid flush & software) - $4,000+ (rebuild)
  • Recalls: None Found

Suspension

• Airmatic Suspension Failure
  • Description/Symptoms: Vehicle sitting lower than normal on one or more corners, “Vehicle Rising” warning light, compressor running constantly or not at all. The air suspension system can be prone to leaks and compressor failure.
  • Solution: Replace the faulty air struts, compressor, or air lines. Address any leaks in the system.
  • Estimated Cost to Fix: $800 - $2,000+ per strut; $500 - $1,200+ for the compressor.
  • Recalls: None Found

Electrical

• Battery Drain
  • Description/Symptoms: Vehicle is hard to start or won’t start after sitting for a short period. Can be caused by a parasitic drain from a faulty module or accessory.
  • Solution: Diagnose the source of the drain and replace the faulty component. Common culprits include the COMAND system, seat control modules, and alarm system.
  • Estimated Cost to Fix: $100 - $1,000+, depending on the component causing the drain.
  • Recalls: None Found
• COMAND System Malfunctions
  • Description/Symptoms: Freezing, rebooting, or failure of the COMAND infotainment system. Issues can range from software glitches to hardware failures.
  • Solution: Attempt a software update. If the issue persists, the COMAND unit may need to be replaced.
  • Estimated Cost to Fix: $100 - $500+ (Software update) - $1,000 - $3,000+ (Replacement)
  • Recalls: None Found

Exterior

• Sunroof Issues
  • Description/Symptoms: Sunroof failing to open or close properly, unusual noises when operating, leaks around the sunroof seal.
  • Solution: Clean and lubricate the sunroof tracks and seals. If the motor or mechanism is damaged, it may need to be replaced.
  • Estimated Cost to Fix: $100 - $200+ (Cleaning & Lubrication); $500 - $1,500+ (Motor/Mechanism Replacement)
  • Recalls: None Found

Interior

• Seat Heater Failure
  • Description/Symptoms: Seat heaters failing to warm up, intermittent operation, or overheating. Often caused by a broken heating element in the seat.
  • Solution: Replace the faulty heating element or the entire seat cushion.
  • Estimated Cost to Fix: $300 - $800+
  • Recalls: None Found

Summary

The 2013 Mercedes-Benz ML550, while offering a luxurious and powerful driving experience, can be prone to certain issues, particularly with the engine’s turbochargers, the air suspension, and the COMAND system. Repair costs can be significant, especially for major components like the turbochargers, air struts, and COMAND unit. Potential buyers should be aware of these potential issues and factor them into their ownership costs.