2016 Mercedes-Benz C450 AMG

The 2016 Mercedes-Benz C450 AMG, later rebranded as the C43 AMG, is a performance-oriented sedan that bridges the gap between the standard C-Class and the full-fledged AMG C63. It is powered by a 3.0-liter twin-turbocharged V6 engine producing 362 horsepower and 384 lb-ft of torque, paired exclusively with a 7G-TRONIC PLUS seven-speed automatic transmission. Owners appreciate the C450 AMG for its blend of performance, luxury, and daily usability. Common praises include its responsive engine, sporty handling, and attractive interior. Criticisms often revolve around the somewhat stiff ride quality, particularly with the optional performance suspension, and the complexity of the infotainment system. The C450 was only offered with one engine and transmission option as described.

Engine

3.0L Twin-Turbocharged V6

• Oil Leaks from Turbocharger Oil Supply Lines
  • Description/Symptoms: Oil leaks are reported to develop from the oil supply lines feeding the turbochargers. This can result in a burning oil smell and visible oil on the engine.
  • Solution: Replacement of the affected oil supply lines and associated gaskets.
  • Estimated Cost to Fix: $500 - $1,000+
  • Recalls: None Found
• High-Pressure Fuel Pump (HPFP) Failure
  • Description/Symptoms: The high-pressure fuel pump (HPFP) can fail, leading to symptoms such as difficulty starting, rough idling, loss of power, and a check engine light.
  • Solution: Replacement of the high-pressure fuel pump.
  • Estimated Cost to Fix: $800 - $1,500+
  • Recalls: None Found

Transmission

7G-TRONIC PLUS 7-Speed Automatic

• Rough or Delayed Shifting
  • Description/Symptoms: Some owners have reported experiencing rough or delayed shifting, particularly when shifting between lower gears.
  • Solution: A software update or a full transmission service.
  • Estimated Cost to Fix: $300 - $800+
  • Recalls: None Found
• Torque Converter Issues
  • Description/Symptoms: Reports of torque converter shudder or hesitation, particularly during light acceleration.
  • Solution: Replacement of the torque converter and potentially flushing the transmission.
  • Estimated Cost to Fix: $1,500 - $3,000+
  • Recalls: None Found

Suspension

• Air Suspension Failure (if equipped)
  • Description/Symptoms: Models equipped with the Airmatic air suspension may experience failures of the air struts, air compressor, or air lines, leading to a sagging vehicle, uneven ride height, and associated warning lights.
  • Solution: Replacement of the faulty air strut, compressor, or air lines.
  • Estimated Cost to Fix: $800 - $2,000+ per strut, $500 - $1,500+ for the compressor.
  • Recalls: None Found
• Premature Wear of Suspension Components
  • Description/Symptoms: Premature wear of control arm bushings and ball joints leading to clunking noises, wandering steering, and uneven tire wear.
  • Solution: Replacement of worn control arms, bushings, and ball joints.
  • Estimated Cost to Fix: $400 - $1,200+ per corner
  • Recalls: None Found

Electrical

• COMAND System Malfunctions
  • Description/Symptoms: Issues with the COMAND infotainment system, including screen freezes, Bluetooth connectivity problems, and navigation errors.
  • Solution: Software updates, replacement of the COMAND unit.
  • Estimated Cost to Fix: $100-$1,000
  • Recalls: None Found
• Battery Drain Issues
  • Description/Symptoms: Some owners have reported issues with excessive battery drain, leading to difficulty starting the vehicle.
  • Solution: Identifying and addressing the source of the parasitic drain, which may involve troubleshooting the electrical system and replacing faulty components.
  • Estimated Cost to Fix: $100 - $500+
  • Recalls: None Found

Exterior

• No Issues Found

Interior

• Sunroof Issues
  • Description/Symptoms: Sunroof getting stuck or making loud noises when opening or closing
  • Solution: Adjustments, lubrication or replacement of sunroof motor and/or components.
  • Estimated Cost to Fix: $200 - $1,000+
  • Recalls: None Found

Summary

The 2016 Mercedes-Benz C450 AMG can present a range of issues, from minor electrical glitches to more significant mechanical problems with the engine, transmission, and suspension. The severity of these issues can vary, but the potential costs for repairs, especially concerning the engine, transmission, and air suspension, can be considerable. Careful inspection and a thorough pre-purchase inspection are highly recommended for potential buyers to avoid unexpected and costly repairs.