2022 Mercedes-Benz GLC300
The 2022 Mercedes-Benz GLC300 is a popular luxury compact SUV known for its stylish design, comfortable ride, and upscale interior. The standard engine is a 2.0L turbocharged inline-4 producing 255 horsepower and 273 lb-ft of torque, paired with a 9G-TRONIC 9-speed automatic transmission. What owners generally like about the GLC300 is its smooth handling, luxurious interior, and advanced technology features. However, some common complaints include the high cost of maintenance, complex infotainment system, and occasional electronic glitches.
Engine
2.0L Turbocharged Inline-4 (M264)
- Engine Mount Failure
- Description/Symptoms: Excessive engine vibration, noticeable rattling noises, especially at idle or during acceleration.
- Solution: Replacing the faulty engine mount(s).
- Estimated Cost to Fix: $300 - $800+ depending on the mount(s) needing replacement and labor costs.
- Recalls: None Found
- High Pressure Fuel Pump Failure
- Description/Symptoms: Difficulty starting the engine, engine misfires, loss of power, check engine light illuminated.
- Solution: Replacing the high-pressure fuel pump.
- Estimated Cost to Fix: $800 - $1500+
- Recalls: None Found
Transmission
9G-TRONIC 9-Speed Automatic (725.0)
- Harsh Shifting
- Description/Symptoms: Noticeable jolts or clunking sounds during gear changes, especially between lower gears.
- Solution: Software update to transmission control module (TCM). If the problem persists, valve body replacement might be necessary.
- Estimated Cost to Fix: Software update - $150-$300, Valve body replacement - $1500-$3000+
- Recalls: None Found
- Hesitation or Slipping
- Description/Symptoms: Delayed response when accelerating, engine revving without corresponding increase in speed.
- Solution: Check transmission fluid level and condition. If necessary, perform a transmission flush. In severe cases, transmission replacement may be required.
- Estimated Cost to Fix: Transmission flush - $300 - $500, Transmission Replacement - $5000 - $8000+
- Recalls: None Found
Suspension
- Air Suspension Issues (if equipped)
- Description/Symptoms: Vehicle sagging on one side, air compressor running excessively, “Vehicle Level Too Low” warning message.
- Solution: Replacing the faulty air strut or air compressor.
- Estimated Cost to Fix: Air strut replacement - $1000 - $2000+ per strut, Air compressor replacement - $800 - $1500+
- Recalls: None Found
Electrical
- Infotainment System Freezing/Crashing
- Description/Symptoms: Screen freezing, system rebooting unexpectedly, unresponsive touch screen.
- Solution: Software update to the MBUX infotainment system.
- Estimated Cost to Fix: Software update - $0 - $200+ if not covered under warranty.
- Recalls: None Found
- Sensor Malfunctions (Parking Sensors, Blind Spot Monitoring)
- Description/Symptoms: False alarms, system not functioning as intended.
- Solution: Diagnose and replace faulty sensor(s).
- Estimated Cost to Fix: $300 - $700+ per sensor, depending on location and ease of access.
- Recalls: None Found
Exterior
- No Issues Found
Interior
- Sunroof Issues
- Description/Symptoms: Sunroof getting stuck, making unusual noises, or failing to open/close properly.
- Solution: Lubricating the sunroof tracks and mechanism. Replacing the sunroof motor or regulator if necessary.
- Estimated Cost to Fix: Lubrication - $100-$200, Motor or regulator replacement $500-$1200+
- Recalls: None Found
Summary
The 2022 Mercedes-Benz GLC300, while generally a reliable and enjoyable vehicle, does have some common issues to be aware of. The most frequently reported problems relate to the engine (mounts, fuel pump) and transmission (harsh shifting, hesitation). Electrical glitches with the infotainment system are also common. Suspension issues are possible if the vehicle is equipped with air suspension. The severity and cost of repairs can vary widely, with some fixes being relatively inexpensive software updates, while others, such as transmission or suspension component replacements, can be quite costly.