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…
2017 Mercedes-Benz GLS450Problems, recalls & complaints
NHTSA has logged 35 owner complaints about the 2017 Mercedes-Benz GLS450, most often about the engine. It is covered by 8 safety recalls, and for recall 19V-787 the manufacturer reports only 78% of affected cars repaired.
Source: NHTSA complaints, recalls, investigations and manufacturer recall reports, through August 30, 2026. Updated daily.
Complaints by system
Where the 2017 Mercedes-Benz GLS450 has problems
35 complaints grouped by the system owners reported.
8Engine7 crash/fire/injury
8Electrical system4 crash/fire/injury
6Exterior lighting
5Fuel/propulsion system4 crash/fire/injury
4Steering
2Seats
2Power train
2Structure
2Suspension
66 other systems1 crash/fire/injury
| System | Complaints | Crash, fire or injury |
|---|---|---|
| Engine | 8 | 7 |
| Electrical system | 8 | 4 |
| Exterior lighting | 6 | 0 |
| Fuel/propulsion system | 5 | 4 |
| Steering | 4 | 0 |
| Seats | 2 | 0 |
| Power train | 2 | 0 |
| Structure | 2 | 0 |
| Suspension | 2 | 0 |
| 6 other systems | 6 | 1 |
Source: NHTSA Office of Defects Investigation. Complaints are submitted by the public and are not verified by NHTSA.
8 recalls
2017 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 Q3
Communication
Risk. A disabled eCall system would prevent a vehicle occupant from contacting emergency services through the call center in an emergency, potentially delaying…
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 · 2021 Q1
Communication
Risk. An inaccurate vehicle location may delay emergency responders, increasing the risk of injury.
Show 4 more recalls
repaired · 2019 Q4
Suspension: front
Risk. The leaking oil in the presence of an ignition source can increase the risk of a fire.
repaired · 2019 Q2
Doors: latch
Risk. If the door appears to be locked, the door may be unintentionally opened, increasing the risk of injury.
repaired · 2019 Q2
Passenger side: inflator module
Risk. If the passenger's frontal air bag does not function as designed in the event of a crash, the front seat passenger has an increased risk of injury.
repaired · 2018 Q2
Latches/locks/linkages
Risk. In the event of a crash, if objects are not secured within the center console, they may strike the vehicle occupants, increasing their risk of 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
2017 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 engine complaints filed with NHTSA, shortened. Personal details are removed.
On 8/20/2026 I had a vacuum leak from the intake manifold and crankcase hoses repaired at a Vic's Bimmer Shop in the city of Lancaster California. This included the replacement of the oil separator breather on the engine. I drove my Mercedes Benz 2017 GLS450 less than 100 miles and the engine lost…
On July 23, 2025, I drove my Mercedes-Benz GLS 450 to a medical appointment. After arriving, I parked near the valet station, turned off the car, and went inside to check in at LabCorp. Within two minutes, witnesses reported black smoke from the hood — followed by a violent explosion that shook the…
Car destroyed by fire on March 19, 2023 while at a quick stop near Chickasaw, OK. Car was last serviced by Mercedes-Benz of Oklahoma City in December 2022. No personal injuries just a total loss of the vehicle. Cause of the fire at present is unknown. Pictures are available.
Own a 2017 GLS450?
Decode your VIN to see the recalls for your exact car, then confirm open recalls with NHTSA.