2019 Mercedes-Benz C63 AMG S

The 2019 Mercedes-Benz C63 AMG S is a high-performance variant of the C-Class, renowned for its powerful engine, agile handling, and luxurious interior. It came standard with a handcrafted 4.0-liter twin-turbocharged V8 engine producing 503 horsepower and 516 lb-ft of torque. This engine was paired exclusively with the AMG SPEEDSHIFT MCT 9-speed automatic transmission. People generally love the car’s exhilarating performance, aggressive styling, and upscale cabin. Some common dislikes include the firm ride, relatively high running costs, and occasional electronic glitches.

Engine

4.0L Twin-Turbocharged V8 (M177)

• Turbocharger Failure
  • Description/Symptoms: Whining noise from the turbochargers, reduced power, check engine light. In some cases, complete turbocharger failure may occur.
  • Solution: Replacement of the failed turbocharger(s).
  • Estimated Cost to Fix: $3,000 - $5,000+ per turbocharger (parts and labor)
• Oil Leaks
  • Description/Symptoms: Oil drips under the car, burning oil smell, low oil level warning. Leaks are often observed around the valve cover gaskets, oil pan gasket, and turbocharger oil lines.
  • Solution: Replacement of the leaking gaskets or seals. In the case of turbocharger oil lines, replacement of the lines.
  • Estimated Cost to Fix: $300 - $1,500+ depending on the location and severity of the leak.
• Spark Plug Issues
  • Description/Symptoms: Misfires, rough idling, loss of power, check engine light.
  • Solution: Replacement of spark plugs.

  • Estimated Cost to Fix: $300 - $800+

  • Recalls: None Found

Transmission

AMG SPEEDSHIFT MCT 9-Speed Automatic (9G-Tronic)

• Rough Shifting/Hesitation
  • Description/Symptoms: Harsh or jerky shifts, hesitation when accelerating, particularly at lower speeds.
  • Solution: Software update of the transmission control module (TCM). In more severe cases, valve body replacement.
  • Estimated Cost to Fix: $150 - $300 for software update; $1,500 - $3,000+ for valve body replacement.
• Delayed Engagement
  • Description/Symptoms: Noticeable delay when shifting from Park or Neutral into Drive or Reverse.
  • Solution: Transmission fluid flush and filter replacement. In some cases, TCM replacement or repair.
  • Estimated Cost to Fix: $300 - $500 for fluid flush; $1,000 - $2,500+ for TCM replacement/repair.
  • Recalls: None Found

Suspension

• Air Suspension Issues (if equipped with optional air suspension)
  • Description/Symptoms: Vehicle sitting unevenly, compressor running constantly, suspension malfunction warning light.
  • Solution: Replacement of faulty air struts, air compressor, or ride height sensors.
  • Estimated Cost to Fix: $1,000 - $3,000+ per air strut; $800 - $1,500+ for compressor.
• Creaking/Squeaking Noises
  • Description/Symptoms: Unusual noises coming from the suspension, particularly when going over bumps or turning. Often related to worn bushings or ball joints.
  • Solution: Replacement of worn bushings, ball joints, or other suspension components.
  • Estimated Cost to Fix: $200 - $1,000+ depending on the component.
  • Recalls: None Found

Electrical

• Infotainment System Glitches
  • Description/Symptoms: Freezing, lagging, random reboots, connectivity issues with Bluetooth or Apple CarPlay/Android Auto.
  • Solution: Software update. In more severe cases, replacement of the infotainment system components.
  • Estimated Cost to Fix: $0 - $300 for software update; $1,000 - $3,000+ for component replacement.
• Sensor Failures
  • Description/Symptoms: Malfunctions with driver assistance systems (e.g., blind spot monitoring, lane keeping assist), parking sensors, or other electronic sensors.
  • Solution: Diagnosis and replacement of the faulty sensor(s).
  • Estimated Cost to Fix: $200 - $1,000+ depending on the sensor.
• Battery Drain
  • Description/Symptoms: Battery frequently dies, especially when the car sits for a few days, difficulty starting the vehicle.
  • Solution: Diagnosis and repair of the parasitic draw, replacement of the battery.
  • Estimated Cost to Fix: $100 - $200 diagnosis; $200-$400 battery replacement; $300 - $1000+ parasitic draw diagnosis and repair
• Recalls: None Found

Exterior

• No Issues Found

Interior

• Rattling/Buzzing Noises
  • Description/Symptoms: Annoying rattles or buzzing sounds coming from the dashboard, door panels, or other interior trim pieces.
  • Solution: Locating and securing the loose trim pieces.
  • Estimated Cost to Fix: $100 - $500+ depending on the source and complexity.
• Sunroof Issues
  • Description/Symptoms: Sunroof sticking, not opening or closing properly, excessive wind noise.
  • Solution: Cleaning and lubricating the sunroof tracks. In some cases, replacement of the sunroof motor or other components.
  • Estimated Cost to Fix: $100 - $300 for cleaning/lubrication; $500 - $1,500+ for component replacement.
  • Recalls: None Found

Summary

The 2019 Mercedes-Benz C63 AMG S is a thrilling performance car, but potential buyers should be aware of some common issues. Engine problems, particularly turbocharger failures and oil leaks, can be expensive to repair. Transmission issues, while often addressed with software updates, may require more costly valve body replacements. Electrical glitches are also a common concern. While many issues may be minor, the potential for significant repair costs associated with the engine, transmission, and suspension should be considered.