2018 Mercedes-Benz AMG GT C

The 2018 Mercedes-Benz AMG GT C is a high-performance sports car known for its stunning design, exhilarating performance, and luxurious interior. The AMG GT C is powered by a handcrafted 4.0-liter twin-turbocharged V8 engine that produces 550 horsepower and 502 lb-ft of torque. Other engine options available in the 2018 AMG GT range include a lower-output version of the same 4.0L twin-turbo V8 in the base AMG GT (469 hp), and a higher-output version in the AMG GT R (577 hp). All models utilize a 7-speed dual-clutch automatic transmission. Owners often praise the AMG GT C for its impressive power, responsive handling, and striking aesthetics. Some common criticisms include the firm ride, limited cargo space, and high price point.

Engine

4.0L Twin-Turbo V8

• Oil Leaks
  • Description/Symptoms: Oil leaks can occur from various points on the engine, including the valve cover gaskets, oil pan gasket, and turbocharger lines. Symptoms include visible oil drips, a burning oil smell, and low oil levels.
  • Solution: Replacing the faulty gaskets or seals. Tightening loose connections on turbocharger lines.
  • Estimated Cost to Fix: $200 - $2,000+, depending on the location and complexity of the leak.
  • Recalls: None Found
• Turbocharger Issues
  • Description/Symptoms: Premature wear or failure of the turbochargers can occur. Symptoms include decreased engine power, unusual noises (whining or whistling) from the engine bay, and possibly error codes.
  • Solution: Replacement of the faulty turbocharger(s).
  • Estimated Cost to Fix: $3,000 - $6,000+ for turbocharger replacement (parts and labor), varying depending on if one or both need replacing.
  • Recalls: None Found

Transmission

7-Speed Dual-Clutch (AMG SPEEDSHIFT DCT 7G)

• Rough or Delayed Shifting
  • Description/Symptoms: Some owners have reported instances of harsh or delayed shifts, particularly at lower speeds or during aggressive driving. This can manifest as jerky movements, hesitation between gears, or a noticeable “clunk” during gear changes.
  • Solution: Software updates to the transmission control unit (TCU) may resolve some shifting issues. In more severe cases, replacement of solenoids or other internal components may be necessary.
  • Estimated Cost to Fix: $150 - $500 for software updates; $1,000 - $4,000+ for component replacement.
  • Recalls: None Found
• Transmission Slipping
  • Description/Symptoms: Transmission slipping can occur, particularly under heavy acceleration or high load conditions. Symptoms include the engine revving without a corresponding increase in speed, or a “slipping” sensation during gear changes.
  • Solution: This may require a rebuild or replacement of the transmission.
  • Estimated Cost to Fix: $5,000 - $10,000+ for transmission rebuild or replacement.
  • Recalls: None Found

Suspension

• Air Suspension Problems
  • Description/Symptoms: The AMG GT C utilizes an air suspension system, which can sometimes experience problems such as air leaks, compressor failure, or issues with the ride height sensors. Symptoms include the car sitting unevenly, a malfunctioning ride height adjustment, or a noisy compressor.
  • Solution: Replacing the leaking air struts, the air compressor, or faulty ride height sensors.
  • Estimated Cost to Fix: $1,000 - $3,000+ per strut, depending on the affected component and labor.
  • Recalls: None Found

Electrical

• Infotainment System Glitches
  • Description/Symptoms: The COMAND infotainment system can exhibit occasional glitches, such as screen freezes, unresponsive controls, Bluetooth connectivity problems, or navigation errors.
  • Solution: Software updates can often resolve minor glitches. More serious issues may require replacement of the COMAND unit.
  • Estimated Cost to Fix: $0 - $200 for software updates; $1,500 - $3,000+ for COMAND unit replacement.
  • Recalls: None Found
• Sensor Malfunctions
  • Description/Symptoms: Various sensors throughout the vehicle can fail, leading to warning lights on the dashboard or malfunctioning systems (e.g., tire pressure monitoring system, parking sensors, etc.).
  • Solution: Replacing the faulty sensor.
  • Estimated Cost to Fix: $100 - $500+ per sensor, depending on the type of sensor and labor.
  • Recalls: None Found

Exterior

• No Issues Found

Interior

• Trim Pieces Coming Loose
  • Description/Symptoms: Some owners have reported that certain interior trim pieces, particularly those around the dashboard, door panels, or center console, can become loose or detached over time.
  • Solution: Reattaching the trim pieces using appropriate adhesives or clips. In some cases, replacement of the affected trim piece may be necessary.
  • Estimated Cost to Fix: $50 - $500+, depending on the complexity and the need for replacement parts.
  • Recalls: None Found

Summary:

The 2018 Mercedes-Benz AMG GT C is a performance-oriented vehicle that is not without its issues. Engine oil leaks and turbocharger problems can be costly, while transmission issues may affect the driving experience. Suspension problems and electrical gremlins can also require attention. The severity and cost of these issues can vary significantly, but potential buyers should be aware of these potential problems when considering a used AMG GT C. Addressing these issues promptly can help maintain the vehicle’s performance and reliability.