2019 Mercedes-Benz CLS53 AMG

The 2019 Mercedes-Benz CLS53 AMG is a stylish and sporty coupe-like sedan known for its performance and luxurious features. The CLS53 AMG features a 3.0-liter inline-6 turbocharged engine with EQ Boost, producing 429 horsepower and 384 lb-ft of torque. This engine is exclusively paired with the AMG Speedshift TCT 9-speed automatic transmission. Owners often praise the CLS53 AMG for its attractive design, comfortable ride, and powerful engine. Criticisms tend to focus on the infotainment system, which can be complex to use, and the limited rear headroom due to the sloping roofline.

Engine

3.0L Inline-6 Turbocharged with EQ Boost

• EQ Boost Starter Generator Failure
  • Description/Symptoms: The integrated starter generator (ISG) or “EQ Boost” system can fail, leading to a loss of power, inability to start, or error messages on the dashboard related to the 48V system. Some owners have reported the system failing prematurely.
  • Solution: Replacement of the faulty ISG unit, and possible software updates.
  • Estimated Cost to Fix: $2,000 - $5,000+
  • Recalls: None Found
• High Pressure Fuel Pump Failure
  • Description/Symptoms: Difficulty starting, rough running engine, check engine light.
  • Solution: Replacement of the high pressure fuel pump.
  • Estimated Cost to Fix: $1,000 - $2,000+
  • Recalls: None Found

Transmission

AMG Speedshift TCT 9-Speed Automatic Transmission

• Rough or Delayed Shifting
  • Description/Symptoms: Some owners have reported experiencing rough or delayed shifts, particularly at lower speeds. This can manifest as a noticeable jerkiness or hesitation between gears.
  • Solution: In some cases, a software update or transmission adaptation reset can resolve the issue. In more severe instances, valve body replacement or complete transmission overhaul may be necessary.
  • Estimated Cost to Fix: $300 (software update) - $5,000+ (transmission overhaul)
  • Recalls: None Found

Suspension

• Air Suspension Issues (If Equipped)
  • Description/Symptoms: If equipped with the optional air suspension, problems can arise such as the vehicle not maintaining the correct ride height, compressor failure, or error messages related to the air suspension system.
  • Solution: Diagnosing and replacing the faulty component, which could be the air struts, compressor, valve block, or control module.
  • Estimated Cost to Fix: $1,000 - $3,000+ per strut, $500-$1500 for compressor
  • Recalls: None Found

Electrical

• Infotainment System Freezing/Crashing
  • Description/Symptoms: The MBUX infotainment system can occasionally freeze, crash, or exhibit glitches. This may require a system reboot or software update.
  • Solution: Performing a system reset, updating the software to the latest version, or, in some cases, replacing the infotainment unit.
  • Estimated Cost to Fix: $0 (software update) - $2,000+ (replacement)
  • Recalls: None Found
• Sensor Malfunctions
  • Description/Symptoms: Issues with parking sensors, blind spot monitoring, or other driver-assist systems can occur. These malfunctions often trigger warning lights on the dashboard.
  • Solution: Diagnosing the specific sensor that is malfunctioning and replacing it.
  • Estimated Cost to Fix: $300 - $800+ per sensor
  • Recalls: None Found

Exterior

• No Issues Found

Interior

• Sunroof/Moonroof Malfunctions
  • Description/Symptoms: The sunroof or moonroof may experience issues such as getting stuck, making excessive noise during operation, or failing to open or close properly.
  • Solution: Repair or replacement of the sunroof motor, tracks, or related components.
  • Estimated Cost to Fix: $500 - $1,500+
  • Recalls: None Found

Summary

The 2019 Mercedes-Benz CLS53 AMG presents a mix of potential issues. The most concerning problems revolve around the EQ Boost system and transmission, which can lead to costly repairs. Electrical glitches with the infotainment system are also fairly common. While not every CLS53 AMG will experience these issues, potential buyers should be aware of them and factor in potential repair costs when considering this model. The air suspension, if equipped, is also prone to issues.