repaired · 2026 Q1
Electrical system: wiring
Risk. An overheated ground connection can increase the risk of a fire.
2023 Mercedes-Benz GLS 450 4MATICProblems, recalls & complaints
NHTSA has logged 7 owner complaints about the 2023 Mercedes-Benz GLS 450 4MATIC, most often about the service brakes. It is covered by 5 safety recalls, and for recall 24V-118 the manufacturer reports only 80% of affected cars repaired.
Source: NHTSA complaints, recalls, investigations and manufacturer recall reports, through April 14, 2025. Updated daily.
Complaints by system
Where the 2023 Mercedes-Benz GLS 450 4MATIC has problems
7 complaints grouped by the system owners reported.
4Service brakes
3Engine
2Forward collision avoidance
1Lane departure
1Electrical system
1Wheels
1Fuel/propulsion system
1Fuel system, gasoline
| System | Complaints | Crash, fire or injury |
|---|---|---|
| Service brakes | 4 | 0 |
| Engine | 3 | 0 |
| Forward collision avoidance | 2 | 0 |
| Lane departure | 1 | 0 |
| Electrical system | 1 | 0 |
| Wheels | 1 | 0 |
| Fuel/propulsion system | 1 | 0 |
| Fuel system, gasoline | 1 | 0 |
Source: NHTSA Office of Defects Investigation. Complaints are submitted by the public and are not verified by NHTSA.
5 recalls
2023 Mercedes-Benz GLS 450 4MATIC recalls and how many were fixed
Each ring shows the share of affected cars repaired, from the manufacturer’s latest quarterly report to NHTSA. Recall repairs are free at authorized dealers.
repaired · 2025 Q4
Control module: software
Risk. An engine stall increases the risk of a crash.
repaired · 2025 Q4
Delivery: fuel pump
Risk. A loss of drive power can increase the risk of a crash.
repaired · 2025 Q2
Delivery: fuel pump
Risk. A loss of drive power can increase the risk of a crash.
Show 1 more recall
repaired · 2025 Q1
Structure: body
Risk. Detached trim bars may cause a road hazard and increase the risk of a crash or injury.
Recalls apply to specific cars. To see whether a recall is still open on yours, enter the 17-character VIN at nhtsa.gov/recalls or with Mercedes-Benz.
Best & worst years
2023 vs. every other GLS 450 4MATIC year
Bars show complaints per model year. Colors show the CarFlaw verdict: complaints weighted for crashes, fires and injuries, adjusted for years on the road and compared with the GLS 450 4MATIC median. How we score
'22'23'24'25'26'27
- Avoid
- Caution
- Solid
- Best
- Not rated
In owners' words
What GLS 450 4MATIC owners report
Recent service brakes complaints filed with NHTSA, shortened. Personal details are removed.
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…
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…
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…
Own a 2023 GLS 450 4MATIC?
Decode your VIN to see the recalls for your exact car, then confirm open recalls with NHTSA.