2023 MERCEDES-BENZ GLB-Class Problems

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Complaints Reported

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Complaints by Component

ENGINE

1 complaint

Cylinder repair dealership said it's a known issue but Mercedes Benz said they will not cover the repair.

Nov 11, 2025

VISIBILITY/WIPER

1 complaint

I was driving on Highway on May 19th and the Panoramic Sunroof suddenly shattered

Sep 11, 2025

Carry Handle, Shell, Base,Other/I am not sure

1 complaint

Graco Turn2Me car seat is loosening over time when installed with the vehicle seatbelt and the SnugLock Lock-Off. The vehicle seat belt was also switched to a locked mode after proper installation and did not make a difference over time. The car seat continues to loosen over time to the point where it is moving more than an inch side to side at the belt path. This can cause injury to a child during a crash. Car seat has been installed with the assistance of certified Child Passenger Safety Technicians and Instructors on multiple occasions.

Jul 11, 2025

VISIBILITY

1 complaint

The windshield washer stopped working It doesn’t clean because no water comes out to do the job

Jun 18, 2025

POWER TRAIN

1 complaint

The contact owns a 2023 Mercedes-Benz GLB250. The contact stated that while driving at an undisclosed speed, the vehicle lost motive power with the transmission warning light illuminated. The vehicle was towed to the dealer but was not diagnosed or repaired. Additionally, the contact stated that while driving at an undisclosed speed, the vehicle shuddered abnormally. There was no warning light illuminated. The manufacturer was made aware of the failure. The approximate failure mileage was 18,000.

Apr 22, 2025

SERVICE BRAKES

1 complaint

The front brakes making noise when slow stop , Merced dealer service repair 3 time and replace rotor and brakes, but the problem still making noise. they said nothing he can do. want me to report NHTSA. thanks

Apr 18, 2025

UNKNOWN OR OTHER

1 complaint

Transmission switching to neutral by itself while driving on the highway. This issue has occurred twice in December 2024.

Jan 02, 2025

POWER TRAIN,SERVICE BRAKES

1 complaint

The contact owned a 2023 Mercedes-Benz GLB35 AMG. The contact stated that while driving at an undisclosed speed, the brakes were inoperable. The contact stated that while depressing the brake pedal, the vehicle was not braking smoothly. Additionally, the vehicle failed to accelerate as intended. The contact stated that the transmission malfunction warning light was illuminated. The contact stated that the vehicle had been taken to the dealer four times. The contact stated that the first visit with the dealer regarding the brakes, the dealer applied lubricant to the brake pedal. The contact stated that the failure was persistent. The vehicle was taken to the dealer for the second and third time, however the failure could not be duplicated. The contact stated that the failure was persistent. The vehicle was taken back to the dealer for the fourth time, and the vehicle was sold back to the dealer. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was made aware of the failure and a case was filed. The failure mileage was approximately 3,200.

Feb 15, 2024

4.2/5.0

37 reviews

Frequently Asked Questions

How many problems does the 2023 MERCEDES-BENZ GLB-Class have?

The 2023 MERCEDES-BENZ GLB-Class currently has 8 owner-reported complaints according to NHTSA database. These complaints are organized by component to help identify common issues.

What are the most common problems with 2023 MERCEDES-BENZ GLB-Class?

The most common problems reported for the 2023 MERCEDES-BENZ GLB-Class are organized by component above. Each component section shows owner-reported issues, crash reports, and fire incidents to help identify patterns and problem areas.

Where does this 2023 MERCEDES-BENZ GLB-Class problem data come from?

All problem and complaint data for the 2023 MERCEDES-BENZ GLB-Class comes directly from the National Highway Traffic Safety Administration (NHTSA) database. These are real complaints submitted by actual vehicle owners.