2023 Mercedes-Benz GLS 450 4MATIC problems and owner complaints
Explore the records behind recurring owner reports.
Key facts
7 owner complaints analyzed
5 distinct recall campaigns
11,000 mi median reported failure mileage
Scope: 2023 model year. Data snapshot: . 1 complaints include usable failure mileage.
This selection has limited data. It remains available for lookup but is excluded from search indexing.
Most common problems
Service Brakes is the most frequently named component, appearing in 4 of 7 complaints (57.1%). A complaint can name multiple components.
| Topic | Matching reports | Share of complaints |
|---|---|---|
| Engine operation | 3 | 42.9% |
| Braking behavior | 2 | 28.6% |
| Transmission and shifting | 1 | 14.3% |
| Fuel system concerns | 1 | 14.3% |
Topic matches use published keyword rules. They describe mentions, including negations or comparisons, and do not confirm a diagnosis. Read the matching rules.
Component breakdown
Number of unique complaints naming each component. Top eight shown.
| Category | Count |
|---|---|
| Service Brakes | 4 |
| Engine | 3 |
| Forward Collision Avoidance: Automatic Emergency Braking | 2 |
| Electrical System | 1 |
| Forward Collision Avoidance: Adaptive Cruise Control | 1 |
| Fuel System, Gasoline | 1 |
| Fuel/Propulsion System | 1 |
| Lane Departure: Assist | 1 |
Service Brakes: 4; Engine: 3; Forward Collision Avoidance: Automatic Emergency Braking: 2; Electrical System: 1; Forward Collision Avoidance: Adaptive Cruise Control: 1; Fuel System, Gasoline: 1; Fuel/Propulsion System: 1; Lane Departure: Assist: 1
Reported problems by failure mileage
Complaint counts in mileage bands. These are not failure rates per vehicle or mile.
| Category | Count |
|---|---|
| Under 25,000 | 1 |
| 25,000 to 49,999 | 0 |
| 50,000 to 74,999 | 0 |
| 75,000 to 99,999 | 0 |
| 100,000 to 149,999 | 0 |
| 150,000 and above | 0 |
Under 25,000: 1; 25,000 to 49,999: 0; 50,000 to 74,999: 0; 75,000 to 99,999: 0; 100,000 to 149,999: 0; 150,000 and above: 0
Under 25,000 miles has the most reports with usable mileage (1). 6 complaints have missing, zero or invalid mileage.
Complaints over time
Year the complaint was filed, not the vehicle model year or incident year. The snapshot year is partial.
| Category | Count |
|---|---|
| 2023 | 3 |
| 2024 | 3 |
| 2025 | 1 |
2023: 3; 2024: 3; 2025: 1
Pattern summary
Service Brakes leads the component reports. Engine operation appears in 3 complaint narratives. Braking behavior appears in 2 complaint narratives. Transmission and shifting appears in 1 complaint narratives. Use these patterns to inspect individual reports and prepare questions for a mechanic.
Calculated from recorded counts. An AI narrative has not been published for this selection.
Complaint evidence
Examples provide context, not a representative sample or a verified diagnosis.
Owner report 11548136 · 2023-10-04 (October 4, 2023)
Twice the vehicle has stalled while driving. I see that there is a recall on my model for a faulty fuel pump which causes this problem, but my dealer claims my vehicle is not part of the recall even though it is having the same issue.
Owner-reported narrative. Look up ODI 11548136 at NHTSA ↗
Owner report 11604201 · 2024-07-24 (July 24, 2024)
The contact owns a 2023 Mercedes-Benz GLS450. The contact received notification of NHTSA Campaign Number: 23V880000 (Fuel System Gasoline) however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact stated while driving approximately 10 MPH and making a left turn, the vehicle stalled. The contact stated that an unknown warning was illuminated; however, when the vehicle was restarted, t…
Owner-reported narrative. 11,000 miles reported. Look up ODI 11604201 at NHTSA ↗
Owner report 11617794 · 2024-10-02 (October 2, 2024)
There have been 3 incidents where the car responded to unknown stimuli by braking hard. 3 months ago it happened while making a left turn through an intersection, driving about 10 mph the brakes unexpectedly locked up, luckily the person behind me took evasive action and didn't hit me; 2 weeks later it happened again, I was driving on I-45 attempting to pass slower drivers, the brakes dramatically engaged while I was driving over a slight hill, today it happened again when it mistook a vehicle in a different lane of traffic, and performed a h…
Owner-reported narrative. Look up ODI 11617794 at NHTSA ↗
Owner report 11654449 · 2025-04-14 (April 14, 2025)
The car recently underwent a software update at the dealership for a backup camera issue. When I was driving home on the highway, the car suddenly braked and the seat belts automatically tightened up. This happened 3 additional times on the highway about 5 days later. I had turned off the automatic braking system and it seemed to go away. Then, with the system off, we experienced this again yesterday while on the highway at 70mph. The braking lasts for 1-3 seconds. There is no audible alert or dashboard display. IT renders the car quite …
Owner-reported narrative. Look up ODI 11654449 at NHTSA ↗
Owner report 11609931 · 2024-08-21 (August 21, 2024)
when coming to a stop and applying the break, the transmission stalled. a warning was issued around lane keeping assist and a second warning. Then the transmission light was on. It was not at risk in the moment because no one was behind me and I was coming to a stop sign. If it prevented me from stopping I might have gone through the stop sign It is at the dealership today to service. no warning lamps, messages or other symptoms.
Owner-reported narrative. Look up ODI 11609931 at NHTSA ↗