2020 Mercedes-Benz GLB250

The 2020 Mercedes-Benz GLB250 is a compact SUV known for its versatility, optional third-row seating, and upscale interior. It’s powered by a 2.0-liter turbocharged inline-4 engine producing 221 horsepower and 258 lb-ft of torque. A GLB250 4MATIC version with all-wheel drive is also available. While the GLB250 offers a blend of practicality and luxury that many owners appreciate, common criticisms include a sometimes-firm ride and the potential for a somewhat cramped third row. The engine is paired with an 8-speed dual-clutch automatic transmission.

Engine

2.0L Turbocharged Inline-4 (M260)

• Coolant Leak from Thermostat Housing
  • Description/Symptoms: Coolant leak, engine overheating, low coolant warning. Can often smell coolant.
  • Solution: Replacement of the thermostat housing assembly.
  • Estimated Cost to Fix: $300 - $600+
  • Recalls: None Found
• Oil Leaks
  • Description/Symptoms: Oil leaks can occur from various seals and gaskets, including the valve cover gasket, timing cover, or rear main seal. Symptoms include visible oil drips under the car, oil burning smell, or low oil level.
  • Solution: Replacing the affected seals and gaskets.
  • Estimated Cost to Fix: $200-$1000+ depending on the location and severity of the leak.
  • Recalls: None Found

Transmission

8-Speed Dual-Clutch Automatic

• Rough or Jerky Shifting
  • Description/Symptoms: Hesitation when accelerating, jerky shifts between gears (especially at low speeds), and occasional clunking noises during gear changes.
  • Solution: Software update of the transmission control module (TCM). In some cases, clutch replacement is required.
  • Estimated Cost to Fix: Software update $100 - $300. Clutch replacement $1500-$3000+
  • Recalls: None Found

Suspension

• Premature Wear of Front Lower Control Arm Bushings
  • Description/Symptoms: Clunking or rattling noises from the front suspension, especially when driving over bumps. Uneven tire wear. Vague steering response.
  • Solution: Replacement of the front lower control arms (complete assembly recommended) or just the bushings (if possible).
  • Estimated Cost to Fix: $400 - $1000+ per side (depending on whether the whole arm or just bushings are replaced).
  • Recalls: None Found

Electrical

• Malfunctioning MBUX System
  • Description/Symptoms: Freezing screen, unresponsive touch controls, Bluetooth connectivity issues, Navigation issues, and overall system lag.
  • Solution: Software updates (often multiple attempts), replacement of the MBUX system’s central processing unit (CPU) in severe cases.
  • Estimated Cost to Fix: Software update $100-$300 if not covered under warranty. CPU Replacement $1000 - $2500+
  • Recalls: None Found
• Faulty Parking Sensors
  • Description/Symptoms: Parking sensors providing false alerts, failing to detect obstacles, or not working at all.
  • Solution: Inspection of the sensors for damage or debris. Replacement of faulty sensors.
  • Estimated Cost to Fix: $200 - $500+ per sensor (depending on location and labor).
  • Recalls: None Found

Exterior

• Panoramic Sunroof Issues
  • Description/Symptoms: Squeaking or creaking noises when opening or closing the sunroof. Difficulty opening or closing. Water leaks around the sunroof seal.
  • Solution: Lubrication of the sunroof tracks and seals. Adjustment or replacement of the sunroof motor. Replacement of the sunroof seal.
  • Estimated Cost to Fix: Lubrication: $50-$100. Motor replacement: $500-$1000. Seal replacement: $300-$800.
  • Recalls: None Found

Interior

• Rattling or Squeaking Noises from Dashboard/Trim
  • Description/Symptoms: Annoying rattles or squeaks emanating from the dashboard, door panels, or other interior trim pieces, especially on rough roads.
  • Solution: Locating the source of the noise and applying felt tape or other sound-deadening materials to the contact points.
  • Estimated Cost to Fix: $50 - $300+ (depending on labor and the complexity of the issue).
  • Recalls: None Found

Summary

The 2020 Mercedes-Benz GLB250, while generally a reliable and well-regarded vehicle, has some common issues reported by owners. The electrical issues surrounding the MBUX system and parking sensors can be frustrating, as can the suspension noise and the engine leaks. The transmission issues, while not always severe, can impact the driving experience. While some fixes are relatively inexpensive, others, such as engine repairs or MBUX system replacements, can be quite costly. The issues are of moderate severity, potentially impacting the ownership experience, and the associated costs can range from minor to significant depending on the specific problem and its repair.