2023 Mercedes-Benz C63 AMG

The 2023 Mercedes-Benz C63 S E Performance represents a significant departure from its predecessors, swapping the traditional V8 engine for a high-performance, turbocharged 2.0-liter four-cylinder engine paired with a plug-in hybrid system. This configuration produces a combined output of 671 horsepower and 752 lb-ft of torque. The sole transmission option is a 9-speed automatic. While enthusiasts appreciate the innovative technology and impressive power, some lament the loss of the V8 rumble and the added complexity of the hybrid system. Concerns have also surfaced regarding the long-term reliability of the hybrid powertrain and the associated maintenance costs.

Electric Motor

2.0L Turbocharged Inline-4 with Plug-In Hybrid System

• Electric Motor Malfunction
  • Description/Symptoms: “Check Engine Light” illuminated, reduced electric range, loss of electric boost, error messages on the infotainment screen related to the hybrid system.
  • Solution: Diagnosis by a certified Mercedes-Benz technician to identify the faulty component (e.g., electric motor, inverter, battery management system). Repair or replacement of the malfunctioning part.
  • Estimated Cost to Fix:
  • Recalls: None Found
• Hybrid Battery Degradation/Failure
  • Description/Symptoms: Noticeable reduction in electric range, slower charging times, error messages related to battery health, complete failure of the hybrid system.
  • Solution: Replacement of the high-voltage battery pack.
  • Estimated Cost to Fix:
  • Recalls: None Found

Transmission

9-Speed Automatic

• Rough Shifting
  • Description/Symptoms: Harsh or jerky shifts, particularly at lower speeds; hesitation during gear changes; transmission slipping; abnormal noises from the transmission.
  • Solution: Software update to the transmission control module (TCM); replacement of valve body if needed; transmission replacement in severe cases.
  • Estimated Cost to Fix:
  • Recalls: None Found

Suspension

• Air Suspension Malfunction (if equipped)
  • Description/Symptoms: Uneven ride height; air compressor noise; “Suspension Malfunction” warning light; stiff or bouncy ride.
  • Solution: Inspection of air struts, air compressor, and air lines for leaks or damage. Replacement of faulty components. Calibration of the air suspension system.
  • Estimated Cost to Fix:
  • Recalls: None Found

Electrical

• Infotainment System Freezing/Crashing
  • Description/Symptoms: Unresponsive touchscreen; system crashes; loss of functionality (navigation, audio, climate control); error messages.
  • Solution: Software update; replacement of the infotainment system.
  • Estimated Cost to Fix:
  • Recalls: None Found
• Sensor Failures (e.g., parking sensors, blind spot monitoring)
  • Description/Symptoms: False alarms; failure to detect obstacles; “Sensor Malfunction” warning light.
  • Solution: Diagnosis to identify the faulty sensor; replacement of the defective sensor.
  • Estimated Cost to Fix:
  • Recalls: None Found

Exterior

No Issues Found

Interior

• Rattling Noises
  • Description/Symptoms: Rattles or squeaks from dashboard, door panels, or rear deck.
  • Solution: Identification of the source of the noise; tightening of fasteners; application of sound-deadening material.
  • Estimated Cost to Fix:
  • Recalls: None Found

Summary

The 2023 Mercedes-Benz C63 S E Performance is a technologically advanced vehicle with a complex hybrid powertrain. While owners appreciate its performance capabilities, common issues include electric motor malfunctions, hybrid battery degradation, transmission problems, and electrical glitches. The severity of these issues ranges from minor inconveniences to major repairs, and the costs can be substantial, especially concerning the hybrid components. Potential buyers should be aware of these potential problems and consider the long-term maintenance costs associated with this vehicle.