repaired · 2026 Q2
Communication: auto crash notification
Risk. A disabled eCall system would prevent a vehicle occupant from contacting the emergency services call center in an emergency, potentially delaying emergency…
2018 Mercedes-Benz GLS450Problems, recalls & complaints
NHTSA has logged 14 owner complaints about the 2018 Mercedes-Benz GLS450, most often about the service brakes. It is covered by 3 safety recalls, and for recall 22V-365 the manufacturer reports only 91% of affected cars repaired.
Source: NHTSA complaints, recalls, investigations and manufacturer recall reports, through December 5, 2025. Updated daily.
Complaints by system
Where the 2018 Mercedes-Benz GLS450 has problems
14 complaints grouped by the system owners reported.
3Service brakes2 crash/fire/injury
3Suspension
2Engine2 crash/fire/injury
2Structure
2Electrical system1 crash/fire/injury
1Power train
1Seats
1Steering
1Electronic stability control (ESC)
33 other systems1 crash/fire/injury
| System | Complaints | Crash, fire or injury |
|---|---|---|
| Service brakes | 3 | 2 |
| Suspension | 3 | 0 |
| Engine | 2 | 2 |
| Structure | 2 | 0 |
| Electrical system | 2 | 1 |
| Power train | 1 | 0 |
| Seats | 1 | 0 |
| Steering | 1 | 0 |
| Electronic stability control (ESC) | 1 | 0 |
| 3 other systems | 3 | 1 |
Source: NHTSA Office of Defects Investigation. Complaints are submitted by the public and are not verified by NHTSA.
3 recalls
2018 Mercedes-Benz GLS450 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 · 2023 Q4
Communication: auto crash notification
Risk. Failure of the eCall system may result in emergency responders being dispatched to the wrong location, increasing the risk of injury following a crash.
repaired · 2019 Q4
Service brakes, hydraulic
Risk. Reduced braking performance can increase the risk of a crash.
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
2018 vs. every other GLS450 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 GLS450 median. How we score
'16'17'18'19'20'21
- Avoid
- Caution
- Solid
- Best
- Not rated
In owners' words
What GLS450 owners report
Recent service brakes complaints filed with NHTSA, shortened. Personal details are removed.
January 2023 - Airbag suspension failed. Replaced by Mercedes dealership. December 2024 - Airbag suspension failed. Replaced by Mercedes dealership. April 2024: First brake failure. The brakes stopped while driving. Repaired. April 2025: Second brake failure. Brakes failed again. Repaired. The…
Brake brakes are terrible. They have other years that they’ve acknowledge that the break are spongy and at times does not break the GLS has that defect. Also smell of gas fumes inside the vehicle. Please direct me the right way and help me with this issue. The brake issue almost have caused me two…
I WAS ALREADY 90% IN PARKING LINE WHICH IS HANDICAP'S. ABOUT TO STOP RIGHT FRONT OF HANDICAP SIGN, SUDDENLY VEHICLE START MOVING FORWARD WHILE MY FOOT WAS IN BRAKE SO I PUSH LITTLE HARD TO COMPLETE STOP BUT VEHICLE SUDDENLY ACCELERATE FORWARD SMASHING INTO THE BUILDING GLASS ENTRY WALL AND DOOR. I…
Own a 2018 GLS450?
Decode your VIN to see the recalls for your exact car, then confirm open recalls with NHTSA.