2015 Mercedes-Benz GL550 Other or unknown Problems
- Complaints
- 2about this part
- Share
- 25%of 8 total for the year
- Median mileage
- 2,200miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the other or unknown of the 2015 Mercedes-Benz GL550, 25% of the 8 complaints for this model year. Where a mileage was given, the median is 2,200 miles. 1 a fire, according to the filers.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“My car has an ongoing problem with the HVAC system. It generates a mold and mildew smell while using the AC and heat. Mercedes says they no of this issue but have no permanent fix. The smell is so bad that it is almost un-drivable. Mercedes dealerships have bulletins that denote the issue is known, but their work around only temporarily improves the smell. There is an obvious engineering issue with the HVAC system that is unhealthy. There is apparently that forms around the mold around the AC evaporator. Mercedes has an internal alert # TSB li83-30-p-059119. …”
NHTSA complaint #10933757, filed 2016-12, 2,200 milesOther or unknown: other model years
Other parts of the 2015 Mercedes-Benz GL550
4 complaintsBrakes
1 complaintsEngine cooling
1 complaintsSeats
1 complaintsBody and structure
1 complaints
← All problems reported for the 2015 Mercedes-Benz GL550
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Nov 1, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology