2022 Mercedes-Benz GLC300e

The 2022 Mercedes-Benz GLC300e is a plug-in hybrid SUV that blends luxury with efficiency. The GLC300e is equipped with a 2.0-liter inline-4 turbo engine paired with an electric motor, producing a combined 315 horsepower and 516 lb-ft of torque. This powertrain is mated to a 9G-TRONIC 9-speed automatic transmission. Other engine options for the standard GLC300 include a similar 2.0L turbo without the hybrid components in the GLC 300. High performance AMG versions offer more powerful engines and transmissions. Owners often praise the GLC300e for its comfortable ride, upscale interior, and fuel efficiency due to its hybrid capabilities. However, some common complaints revolve around the complexity of the infotainment system, the limited all-electric range, and occasional electrical glitches.

Electric Motor

2.0L Turbo Inline-4 Hybrid Electric Motor

• Electric Motor Malfunction
  • Description/Symptoms: The electric motor may fail to engage or provide the expected level of assistance. This can result in reduced power, diminished fuel economy, and error messages on the dashboard related to the hybrid system.
  • Solution: Diagnosis by a certified Mercedes-Benz technician is necessary to pinpoint the fault within the electric motor or its related control systems. Replacement or repair of the electric motor or its components may be required.
  • Estimated Cost to Fix:
• Battery Pack Degradation
  • Description/Symptoms: Reduced all-electric range, longer charging times, and error messages related to battery health. This can be exacerbated by frequent fast charging or extreme temperatures.
  • Solution: Software updates to manage battery performance. In severe cases, individual battery modules or the entire battery pack may need to be replaced.
  • Estimated Cost to Fix:
  • Recalls: None Found

Transmission

9G-TRONIC 9-Speed Automatic

• Rough Shifting
  • Description/Symptoms: Harsh or jerky shifts between gears, especially during low-speed acceleration or deceleration. This can be more pronounced when the transmission is cold.
  • Solution: Begin with a transmission fluid flush and filter replacement using Mercedes-Benz approved fluid. If the problem persists, valve body inspection and potential replacement may be necessary. A software update to the transmission control module (TCM) can also sometimes resolve shifting issues.
  • Estimated Cost to Fix: $300-$3,000+
  • Recalls: None Found
• Hesitation or Delay in Gear Engagement
  • Description/Symptoms: A noticeable delay between pressing the accelerator and the vehicle actually moving, particularly when shifting from park or neutral into drive or reverse.
  • Solution: Check transmission fluid level and condition. If low or contaminated, perform a fluid flush and filter replacement. Internal transmission damage may require a rebuild or replacement.
  • Estimated Cost to Fix:
  • Recalls: None Found

Electrical

• MBUX Infotainment System Issues
  • Description/Symptoms: Freezing, lagging, random reboots, or failure to connect to Apple CarPlay or Android Auto. These issues are frequently reported.
  • Solution: Start with a system reset. If the problems persist, software updates from Mercedes-Benz may be available. In some cases, hardware replacement of the MBUX unit may be required.
  • Estimated Cost to Fix:
  • Recalls: None Found
• Sensor Malfunctions
  • Description/Symptoms: Issues with parking sensors, blind-spot monitoring, or lane-keeping assist systems. These can result in false alarms or complete system failure.
  • Solution: Diagnostic scan to identify the faulty sensor. Replacement of the affected sensor is typically required.
  • Estimated Cost to Fix:
  • Recalls: None Found
• Charging System Issues
  • Description/Symptoms: The vehicle may fail to charge, charge slowly, or display error messages related to the charging system. This could involve the charging port, onboard charger, or related wiring.
  • Solution: Inspect the charging port for damage or debris. Test the charging cable and outlet. A diagnostic scan can help identify faults within the onboard charger or related control modules.
  • Estimated Cost to Fix:
  • Recalls: None Found

Interior

• Sunroof Issues
  • Description/Symptoms: The sunroof may not open or close properly, may leak, or may make excessive noise during operation.
  • Solution: Inspect the sunroof tracks for debris or damage. Lubricate the tracks and seals. Adjustment or replacement of the sunroof motor or components may be necessary.
  • Estimated Cost to Fix:
  • Recalls: None Found

Summary:

The 2022 Mercedes-Benz GLC300e, while a luxurious and efficient vehicle, has been reported to have certain common issues. Electrical issues, particularly with the MBUX system, and rough shifting with the transmission, are some of the most common complaints. While some fixes are relatively inexpensive, more serious issues like battery pack degradation or transmission repairs can be costly.