2020 Mercedes-Benz GLB-Class

Diagnostics performed and found electrical/component fault and possible wire damage to fuel pump. NECC to drain tank and inspect replace fule pump if necc. Oringally took one week prior and diagnostics led to the possiblility that the cylinder head was malfunctioning, which was a manufacturing defect and covered under an extended warranty, but now advised otherwise. Quote $2200.00. Mileage on vehicle 23,660.

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.

I am submitting this formal complaint regarding a serious safety incident involving my 2020 Mercedes-Benz GLB, which directly reflects the defect outlined in Recall 20V-480 (Rear Spoiler Detachment). Although my VIN is not officially included in the affected range, the exact failure described in the recall occurred on my vehicle. On or about June 16, 2025, at approximately 3:00 p.m., I was driving and I noticed an object in my rearview mirror that had become airborne and was causing vehicles behind me to swerve to avoid it. Moments later, two separate vehicles pulled up alongside me, and the drivers began waving their arms to get my attention. I exited the roadway and pulled into the Walmart parking lot, where a couple in a pickup truck approached me and informed me that the rear spoiler of my vehicle had flown off. I got out to inspect the vehicle, and indeed, the spoiler was completely gone. I returned to the area where I first saw the airborne object, attempting to locate the detached part, but was unsuccessful in recovering it. I contacted Mercedes-Benz USA and my local dealership on June 17, 2025, and was told that because my vehicle’s VIN is not listed under the recall, I would be responsible for the full cost of inspection and repair. Frankly, that position is unacceptable for the following reasons: - Recall 20V-480 describes a defect involving improperly welded rear spoilers on 2020 GLB250 models, which can detach while driving. That is exactly what happened to my vehicle under normal conditions. - The spoiler detached while the vehicle was in motion, creating a dangerous road hazard—just as outlined in the recall. - The vehicle has never been involved in a collision or sustained rear-end damage. It has not been subjected to outside interference. - My VIN has been included in at least five previous recalls, underscoring that my vehicle was part of broader quality issues during that production period.

See attached document for complaint.

The contact owns a 2020 Mercedes-Benz GLB250. The contact received notification of NHTSA Campaign Number: 23V732000 (Service Brakes, Hydraulic, Equipment); however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The dealer was made aware of the issue and confirmed that parts were not yet available. The manufacturer was made aware of the issue and confirmed that parts were not yet available. The contact had not experienced a failure. VIN tool confirms parts not available.

The contact owns a 2020 Mercedes-Benz GLB250. The contact stated while the vehicle was at a stop light, the accelerator pedal was depressed however, the vehicle lunged backward. There was no warning light illuminated. The contact depressed the brake pedal to stop the vehicle. The vehicle was restarted; however, the failure recurred. The vehicle was taken to the dealer but was not diagnosed or repaired. The contact was informed by the dealer that the failure could not be duplicated. The manufacturer was made aware of the failure. The approximate failure mileage was 50,307.

Car constantly cuts out and loses power as well as occasionally shuts off for no reason. Causing very hazardous driving conditions. I have noticed that this is a common issue stated in online forums with this particular car as well. It is more times than not an issue with the engine head and valves.

The contact owns a 2020 Mercedes-Benz GLB250. The contact stated while driving 45 MPH, the rear spoiler detached from the vehicle. There were no warning lights illuminated. The vehicle was taken to the local dealer, where it was determined that the spoiler needed to be replaced. The vehicle was not repaired. The manufacturer was not contacted. The failure mileage was approximately 47,000.

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.

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.

CV joint axle. This car does not maintain its lane. Drives misaligned and sounds like there is a cracking noise like something is breaking under driverside steering wheel. Attention assist comes on often. This issue appeared shortly after purchasing 05/24. The vehicle had been inspected multiple times by Mercedes. Supposedly there were looks bolts underneath that were tightened. Problem persists every-time vehicle is driven.

Engine failure. Engine has no compression which is causing injection fueler to fail. The head engine has gone bad at 50,000 miles. Head engine must be replaced and is on back order per Mercerdes Benz. After research on the issue I’ve noticed the Year/Make/Model this is issue is common at the 40k-50k mile mark. This is a manufactured issue that Mercerdes needs to fix if so common within the car and also unsafe. Not okay for a new car to have engine failure this early

Since the beginning of the vehicle purchase, we heard fine metal rattling sound on the front driver side tire. Had it checked with the dealer and they recommended no repair. Now driven about 35K miles and started very loud metal scratching sound when wheels turned to right. Inspection showed bent brake cover that was wearing tire uneven. Dealer claims that we went over a large bump that bent the brake cover but no such thing happened and this location is where we have been hearing this fine rattling since buying new. Raising a possibility that the manufacturing and securing process of parts around this area was not done fully and eventually cause inappropriate contact induced brake covering damage and tire wear.

The contact owns a 2020 Mercedes-Benz GLB250. The contact stated that there was an abnormal fuel odor inside the cabin of the vehicle. There were no warning lights illuminated. The vehicle was taken to the local dealer on three occasions however, the dealer was unable to determine the cause of the failure. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure and informed the contact that there were no recalls on the VIN. The contact was referred to the NHTSA Hotline for assistance. The failure mileage was approximately 45,000.

My GLB250 does not fall under recall 2020070009 however after taking it through the car wash the entire display instrument went out and car will not turn on and off. They are telling me the car had water damage and it is on me to fix?

The contact owns a 2020 Mercedes-Benz GLB250. The contact stated while opening the trunk of the vehicle, the rear spoiler detached from the vehicle. The vehicle was taken to the dealer, where it was diagnosed that the rear spoiler needed to be replaced. The vehicle was not repaired. The contact related the failure to NHTSA Campaign Number: 20V480000 (Structure) however, the VIN was not included. The manufacturer was notified of the failure and a case was filed. The failure mileage was approximately 35,000.

Front and rear suspension/control arms appears to have squeaky noises when approaching a turn or going a speed bump.

Gap between frame and windshield causing unbearable squealing noise when driving above 75 mph. Unable to hear exterior surroundings and the squealing is causing aggravation to the ear drums of all passengers. Video provided to Mercedes dealer technician and issue has been inspected and confirmed by dealer. I am the 2nd owner of the vehicle and it was purchased around October/November 2022. The issue was noticed during a road trip from Jacksonville to Orlando, FL in December of 2022. There are no warning lamps or messages. However, there appeared to be a minor leak when the heat was turned on but that was not addressed when viewed by the technician. Currently, a timeframe has not been provided by Mercedes when a new windshield will be available from Germany. So at this time, I am still driving the vehicle enduring the noise since that is my only means of transportation.

There's a recall on the display monitor the screen will go black sometimes come back on sometimes never come back on there was a update to fix the issue if the update doesn't work they will have to change the display module or computer that controls it when I brought it to the dealer they want to charge me to replace the display or computer , I called the manufacturer and they refused to fix the recall problem

I had this safety recall done already why is it not removed it was done at the dealer