2019 Mercedes-Benz Coraza S2

The 2019 Mercedes-Benz C300 is a popular luxury sedan known for its blend of performance, comfort, and technology. The C300 typically comes equipped with a 2.0L turbocharged inline-4 engine producing around 255 horsepower and 273 lb-ft of torque. Other engine options for the 2019 C-Class include the C43 AMG with a 3.0L V6 biturbo, and the C63 AMG with a 4.0L V8 biturbo. All engines are paired with a 9G-TRONIC 9-speed automatic transmission. Owners often praise the C300 for its stylish interior, smooth ride, and responsive handling. Common complaints include the sometimes-complicated infotainment system and potential for expensive maintenance costs.

Engine

2.0L Turbocharged Inline-4 (M264)

• Camshaft Adjuster Failure
  • Description/Symptoms: Engine rattling or knocking noise at startup, particularly when cold. Check engine light may illuminate. Reduced engine power and poor fuel economy can also occur.
  • Solution: Replacement of the camshaft adjuster.
  • Estimated Cost to Fix: $1,200 - $2,000+
  • Recalls: None Found
• High-Pressure Fuel Pump Failure
  • Description/Symptoms: Engine stalling, difficulty starting, and/or a noticeable decrease in performance. Fuel smell may be present. Check engine light illuminates.
  • Solution: Replacement of the high-pressure fuel pump.
  • Estimated Cost to Fix: $800 - $1,500+
  • Recalls: None Found

3.0L Turbocharged V6 (M276)

• No Issues Found

4.0L Turbocharged V8 (M177/M178)

• Turbocharger Failure
  • Description/Symptoms: Loss of power, whistling or whining noises from the engine, excessive smoke from the exhaust. Check engine light illuminates.
  • Solution: Replacement of the faulty turbocharger(s).
  • Estimated Cost to Fix: $3,000 - $7,000+
  • Recalls: None Found

Transmission

9G-TRONIC 9-Speed Automatic (725.0)

• Rough Shifting/Hesitation
  • Description/Symptoms: Harsh or jerky shifts between gears, particularly during low-speed acceleration or deceleration. Hesitation or delay when shifting.
  • Solution: Transmission software update, valve body replacement, or in severe cases, transmission replacement.
  • Estimated Cost to Fix: Software update: $200 - $400; Valve body: $1,500 - $3,000+; Transmission replacement: $5,000 - $8,000+
  • Recalls: None Found
• Transmission Fluid Leak
  • Description/Symptoms: Visible transmission fluid leak under the vehicle. Difficulty shifting or slipping gears. Low transmission fluid level.
  • Solution: Replace leaky seals and/or transmission pan.
  • Estimated Cost to Fix: $300 - $1,000+
  • Recalls: None Found

Suspension

• Air Suspension Malfunctions (If Equipped)
  • Description/Symptoms: Vehicle sagging on one or more corners. Air compressor noise. “Vehicle Level Malfunction” warning message. Ride quality may be affected.
  • Solution: Replacement of faulty air struts, air compressor, or ride height sensors.
  • Estimated Cost to Fix: Air struts: $1,000 - $2,500+ per strut; Air compressor: $800 - $1,500+; Ride height sensor: $300 - $600+
  • Recalls: None Found

Electrical

• Infotainment System Freezing/Crashing
  • Description/Symptoms: The MBUX system freezes, becomes unresponsive, or randomly reboots. Connectivity issues with Bluetooth or Apple CarPlay/Android Auto.
  • Solution: Software update of the infotainment system. If the problem persists, the head unit may need replacement.
  • Estimated Cost to Fix: Software update: $100 - $300; Head unit replacement: $1,500 - $3,000+
  • Recalls: None Found
• Battery Drain
  • Description/Symptoms: Dead battery, requiring frequent jump starts. Electrical system malfunctions.
  • Solution: Diagnose and repair the source of the parasitic drain (e.g., faulty module, improperly installed aftermarket accessories). Replacement of the battery may also be necessary.
  • Estimated Cost to Fix: Diagnosis: $100 - $300; Battery replacement: $300 - $600+
  • Recalls: None Found

Exterior

• Panoramic Sunroof Issues
  • Description/Symptoms: Sunroof not opening or closing properly. Squeaking or rattling noises from the sunroof assembly. Water leaks.
  • Solution: Lubrication of the sunroof tracks, repair or replacement of the sunroof motor or mechanism, or resealing of the sunroof assembly.
  • Estimated Cost to Fix: Lubrication: $100 - $300; Motor/mechanism repair: $500 - $1,500+; Resealing: $300 - $800+
  • Recalls: None Found

Interior

• Seat Heater Failure
  • Description/Symptoms: Seat heaters not working or only working intermittently.
  • Solution: Replacement of the heating element or control module.
  • Estimated Cost to Fix: $500 - $1,200+ per seat
  • Recalls: None Found

Summary

The 2019 Mercedes-Benz C300, while generally reliable, can experience issues typical of luxury vehicles with complex systems. Engine problems like camshaft adjuster and high-pressure fuel pump failures, transmission issues like rough shifting, and electrical issues with the infotainment system are relatively common and can lead to moderate to high repair costs. Suspension issues, especially with the optional air suspension, can also be expensive to address. Overall, prospective buyers should be aware of these potential issues and factor in potential maintenance costs when considering this vehicle.