2019 Mercedes-Benz GLC300

The 2019 Mercedes-Benz GLC300 is a popular luxury compact SUV known for its comfortable ride, upscale interior, and advanced technology. The GLC300 is powered by a 2.0-liter turbocharged inline-4 engine producing 241 horsepower and 273 lb-ft of torque. While there isn’t another engine option available on the GLC300, there are other trims such as the AMG GLC 43 and AMG GLC 63 that offer more powerful engine options. The GLC300 comes standard with a 9G-TRONIC 9-speed automatic transmission. Owners often praise the GLC300 for its smooth ride and luxurious features, but some have reported issues with the infotainment system and certain mechanical components.

Engine

2.0L Turbocharged Inline-4 (M274)

• Oil Leaks
  • Description/Symptoms: Oil leaks can develop from various areas, including the valve cover gasket, oil filter housing, or timing chain cover. Symptoms include visible oil leaks, oil consumption, and a burning oil smell.
  • Solution: Replacing the faulty gasket or component.
  • Estimated Cost to Fix: $200 - $1,000+ depending on the source of the leak.
  • Recalls: None Found
• Camshaft Actuator/Adjuster Issues
  • Description/Symptoms: Potential issues with the camshaft actuator (specifically with the adjustment) can lead to rough idling, reduced power, and potentially a check engine light.
  • Solution: Replacement of the camshaft adjuster/actuator.
  • Estimated Cost to Fix: $800 - $1,500+
  • Recalls: None Found

Transmission

9G-TRONIC 9-Speed Automatic (725.0)

• Rough Shifting/Hesitation
  • Description/Symptoms: Some owners have reported experiencing rough shifting or hesitation, especially when shifting between lower gears. This can manifest as jerky movements or a noticeable delay in gear engagement.
  • Solution: A software update or transmission flush may resolve the issue. In some cases, valve body replacement may be necessary.
  • Estimated Cost to Fix: $300 (software update/flush) - $2,000+ (valve body)
  • Recalls: None Found

Suspension

• Air Suspension Issues (If Equipped)
  • Description/Symptoms: Models equipped with the optional air suspension may experience issues such as the suspension not leveling properly, compressor failures, or air leaks. Symptoms include a noticeable lean, uneven ride height, or a warning light on the dashboard.
  • Solution: Replacing the faulty air spring, compressor, or valve block.
  • Estimated Cost to Fix: $800 - $2,000+ per component.
  • Recalls: None Found

Electrical

• Infotainment System Malfunctions
  • Description/Symptoms: The MBUX infotainment system can experience glitches, freezing, or failure to respond to inputs. Some owners have also reported issues with Bluetooth connectivity and navigation.
  • Solution: Software updates may resolve some issues. In more severe cases, the head unit may need to be replaced.
  • Estimated Cost to Fix: $0 (software update) - $1,500+ (head unit replacement).
  • Recalls: None Found
• Sensor Failures
  • Description/Symptoms: Faulty sensors, such as the oxygen sensor or mass airflow sensor, can trigger the check engine light and affect engine performance.
  • Solution: Replacing the faulty sensor.
  • Estimated Cost to Fix: $200 - $500+
  • Recalls: None Found

Interior

• Sunroof/Moonroof Problems
  • Description/Symptoms: Issues can arise with the sunroof/moonroof mechanism, including difficulty opening or closing, unusual noises, or leaks.
  • Solution: Lubricating the tracks or replacing the motor or other damaged parts.
  • Estimated Cost to Fix: $200 - $800+
  • Recalls: None Found
• Seat Heater Malfunction
  • Description/Symptoms: The seat heaters may fail to function or overheat.
  • Solution: Replacing the heating element or control module.
  • Estimated Cost to Fix: $300 - $800+
  • Recalls: None Found

Exterior

No Issues Found

Summary

The 2019 Mercedes-Benz GLC300 offers a luxurious and comfortable driving experience, but owners should be aware of potential issues. The most common problems relate to the engine (oil leaks, camshaft adjusters), transmission (rough shifting), and electrical components (infotainment system). While some issues can be resolved with software updates or minor repairs, others may require more extensive and costly replacements. The severity of these issues ranges from minor inconveniences to more significant mechanical problems. The estimated cost to fix can vary widely depending on the specific issue and repair needed. It’s recommended to have a thorough inspection performed by a qualified mechanic prior to purchasing a used 2019 GLC300.