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Other or unknownPart report

2017 Mercedes-Benz GLS 450 Other or unknown Problems

Complaints
7about this part
Share
20%of 35 total for the year
Median mileage
12,657miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 7 complaints about the other or unknown of the 2017 Mercedes-Benz GLS 450, 20% of the 35 complaints for this model year. Where a mileage was given, the median is 12,657 miles.

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.

“While driving down the turner turnpike (between tulsa and okc, around 70-75mph)the vehicle without warning has swerved left and right on three different occasions. The action felt as if the hand of god was throwing us left and then right. The car has a mind of its own. Then the last time that I drove the car it suddenly yanked me off the road without warning, literally trying to kill us. This last incident occurred when the car had around 1,750 miles on it. The thing is dangerous! I now own a car that I can't put my family in and should not be allowed on the road. …”

NHTSA complaint #10969872, filed 2017-04, 1,750 miles

“Center console is not safely installed and moves while driving. Evidence is that mercedes-bens has now twice updated the part for replacement, but does actively offer that for existing owners: original part:166-680-16-52 1st revision part:166-680-38-03 2nd revision part: 166-680-86-04”

NHTSA complaint #11376132, filed 2020-11, 20,000 miles

“2017 mercedes benz gls 450 4matic purchased september 2016. Returned vehicle to dealership 6 (six) times for foul smell coming from air conditioning unit. Foul, moldy smell still remains. Dealer has changed multiple parts, cleaned the a system and replaced dust and fine particle filter each time. The smell always comes back. Developed a recurring cough because of smell. After calling a lawyer I found out that there is a class action lawsuit regarding multiple mercedes benz models including the 2017 GLS450.”

NHTSA complaint #11230308, filed 2019-07, 12,314 miles

“I've gone through 3 sets of tires that the rear 2 tires are always bald first. I've had the originals bald, then the snow pirelli and now the michelin. Is there a known issue or recall with the 2017 gls 450?”

NHTSA complaint #11181020, filed 2019-02

“On friday 11/30 my 2017 mercedes gl450 suffered a catastrophic electronic malfunction that LED to a) no ability to get car out of drive (e.g. Wouldn't park, reverse, couldn't take my foot off the brake), b) no ability to turn car off, c) power steering went out, d) airbags flagged as inactive, e) most all my dashboard warning lights went on including one that said malfunction , f) my dashboard gauges failed (e.g. No working odometer), g) the rear hatch couldn't open. This happened while driving my family -- including 2 young children -- through the desert, putting us at very great risk. …”

NHTSA complaint #11156582, filed 2018-12

Related service bulletins

Other or unknown: other model years

YearComplaintsShare of year
2021826%
2020411%
2019728%
201817%
2017720%

Other parts of the 2017 Mercedes-Benz GLS 450

Electrical system
8 complaints
Engine
8 complaints
Exterior lighting
6 complaints
Fuel system
6 complaints
Steering
4 complaints
Seats
2 complaints
Body and structure
2 complaints
Suspension
2 complaints
Transmission and drivetrain
2 complaints
Brakes
1 complaints
Forward collision avoidance
1 complaints
Seat belts
1 complaints

← All problems reported for the 2017 Mercedes-Benz GLS 450

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 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