2020 Mercedes-Benz GLB250 Problems & Complaints

Most common 2020 Mercedes-Benz GLB250 problems

• Body & structure~35,000 miles
  1423%
• Electrical system~2,000 miles
  1321%
• Other / not specified~6,000 miles
  1220%
• Engine & cooling~8,000 miles
  1016%
• Fuel & propulsion system~45,000 miles
  813%
• Suspension~22,000 miles
  711%
• Air bags~4,000 miles
  610%
• Steering~22,000 miles
  47%
• Speed control & acceleration~50,000 miles
  35%
• Driver assistance~0 miles
  35%
• Transmission & drivetrain~50,000 miles
  35%
• Windows, wipers & sunroof~18,000 miles
  23%
• Brakes
  23%
• Seat belts
  12%
• Wheels & tires
  12%
• Equipment & accessories
  12%
• Locks & latches~70,000 miles
  12%

Share of the 61 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.

Mercedes-Benz GLB250 complaints by model year

Best GLB250 years: 2022, 2025, 2023. Compare all years →

2020 Mercedes-Benz GLB250 recalls (20)

What 2020 Mercedes-Benz GLB250 owners say

Body & structure

The contact owns a 2020 Mercedes-Benz GLB250. The contact stated that the rear tailgate of the vehicle would not raise above 10-12 inches. The contact stated that the check engine warning light was illuminated. The contact was relating the failure to NHTSA campaign number: 21V231000 (Structure). The vehicle was taken to the local dealer however, the dealer refused to service the recall and referred the contact to their legal team. The vehicle was not repaired. The manufacturer had been informed of the failure. The failure mileage was approximately 22,000. THE CONSUMER STATED THERE ARE 2 THREE-INCH GOUGES ON THE ROOF THAT WAS LEFT AFTER THE DEALER RE-ATTACHED THE REAR SPOILER. THE CONSUMER ALSO STATED, MICE WERE DESTROYING THE HEATING AND AIR UNIT. HE REAR HATCH WOULD NOT CLOSE PROPERLY.

The contact owns a 2020 Mercedes-Benz GLB250. The contact stated while opening the liftgate, the rear spoiler above the liftgate became loosened while raising and scratched the roof of the vehicle. The contact stated that the rear spoiler had not detached. The vehicle was taken to the dealer, and the contact was informed that the failure was caused by external factors, unrelated to NHTSA Campaign Number: 20V480000 (Structure), which had previously been performed. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 40,000.

Electrical system

My car has a recall from May 2021, I purchased my car Oct 2022. When asked about the recall the finance manger at Mercedes Benz of South San Francisco, Rapheal Chin stated it was no open recalls on the car. When I pointed out the repair order didn't match the car fax, it was explained by the salesman that it was completed. But NHTSA says that it was not fixed. When trying to get it fixed my car sat at the dealership for 8 days with no understanding of how to fix my car. This is clear neglect on the manufacturer and is causing me grief! My car says no updates needed, my Mercedes Benz Me App, says no updates needed but yet this recall is still open over a year later. I've called customer care 12 times in one day with no help. It seems as though no one throughout the Mercedes Benz company can assist me.

The contact owns a 2020 Mercedes-Benz GLB250. The contact received notification of NHTSA Campaign Number: 21V354000 (Back Over Prevention, Electrical System) however, the part to do the repair was unavailable. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

Engine & cooling

The vehicle was operating normally the previous night. We drove it and parked it in the driveway that evening, and it was not used again after that. The following morning, we started the vehicle to allow it to warm up and then returned inside the house. Approximately 10 minutes later, we discovered the vehicle was on fire, with flames coming from under the hood. We immediately called 911. The fire department responded and was able to extinguish the fire; however, the vehicle was completely destroyed, and part of our home sustained fire damage. There were no prior issues with the vehicle. We had purchased it in September 2025, and it was in excellent condition. This incident could have resulted in far more serious consequences had it occurred while the vehicle was in motion or if emergency responders had not arrived as quickly as they did.

The engine made a knocking sound and i pulled over on the side of the road took the car to MB dealership to get the recall fixed but i was told the recall cannot be fixed until the engine is fixed. MBUSA refuses to replace the engine even though it is fully covered under warranty. Thus because i cannot get a recall done for my safety unless i get an engine replaced. This is absolutely horrible. MB knows they produced a bad engine and are forcing us to pay out of our pocket then they will fix the recall on the car.

2020 Mercedes-Benz GLB250 engines & fuel economy

EPA ratings. Class: Small SUV.