2017 Mercedes-Benz GLS-Class owner complaints

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

I bought 2017 gls 450 in july last year 2016.the passenger seat does not move properly forward and backward.after the initial review the dealer told me it was external influence that created the problem. The motor is under the seat in the middle of the seat. In no way it could be external problem. The seat will not move in the event of accident and there could be no deploy of the airbag due to malfunction of seat.I m just worried of the safety of the family. Please can u check in this matter thanks.

Feel unsafe fuel rails and more where recalled in April 2022 Not all gls550 were recalled at the time due to no reason Drive to Florida with my wife and kids and car gave up on the side of a bridge hwy over the ocean We were stuck car smelt like gas and wouldn’t turn on we had nowhere to get out on a 25ft bridge with no ac no emergency lanes with 5 kids all under age of 6

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.

Vehicle Information: Make: Mercedes-Benz Model: GLS 450 Year: 2017 Component: Visibility/Sunroof/Panoramic Glass Roof VIN: [XXX] Incident Date: [XXX] Complaint Summary: I am filing this complaint regarding a serious and dangerous safety defect in my 2017 Mercedes-Benz GLS 450. Without warning and while driving, the panoramic glass sunroof suddenly shattered and exploded, sending glass shards and debris into the vehicle cabin. My two young children were seated inside at the time, and glass pieces fell directly onto them, causing extreme distress and posing a severe risk of injury. There was no impact or external cause—the sunroof shattered spontaneously. The incident left glass scattered throughout the interior of the vehicle, including on the seats, floor, and children’s car seats. Fortun

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. My car is being serviced at mb of valencia (the closest one I could drive to). I'm being told by them that a minor, low-speed and low-impact dent in my rear bumper caused a misalignment in my exhaust, w

When in distronic+ which includes lane keeping assist, my car swerves sharply out of its lane for no apparent reason which, while infrequent, could cause an accident. I have taken my car to the local dealer resulting in no cause identification and have provided an email to Mercedes customer service with no response yet. I previously spoke to Mercedes customer service on the phone and they suggested taking it back to the dealer. Thanks for your help in addressing this matter. The date I selected below the last time the problem occurred on us 192 in melbourne fl. The email to Mercedes is attached as a pdf file. The date I entered below is the last time the problem occurred thank you for your help.,

The contact owns a 2017 Mercedes-Benz GLS450. The contact stated that upon starting the vehicle after driving in a rainstorm, the power steering malfunction message was displayed. While driving approximately 70 MPH, the power steering became inoperable. The vehicle was taken to the local dealer where it was diagnosed and determined that the failure was due to the electronic power steering rack. The vehicle was not repaired. The contact related the failure to NHTSA Campaign Number: 17V241000 (Steering). The manufacturer was contacted and notified of the failure and the contact was referred to NHTSA Hotline for assistance. The failure mileage was approximately 29,210.

My 2017 Mercedes-Benz GLS 450 is experiencing serious and unpredictable transmission behavior related to the valve body and shifting mechanism. The transmission sometimes fails to engage Park, shifts on its own without driver input or attempts to engage Reverse unexpectedly. On multiple occasions the vehicle has moved or rolled after being placed in Park and once it appeared to shift itself toward Reverse. This behavior is a clear safety risk as the vehicle can suddenly lose control or move unexpectedly. It happens intermittently, without any dashboard warnings and often resets temporarily after restarting the car. According to multiple owners posting on Mercedes-Benz forums (including MBWorld, BenzWorld, and Mercedes-Benz Owners Club discussions), this issue is common among GLS and othe

Rear differential axle seals were distorted, causing fluid to lead out. The seals appear to have been installed incorrectly when the car was manufactured. Seals have been replaced prior to any additional problems with the vehicle or drive train. Dealer replaced seal quickly and promptly. Dealership was a pleasure to deal with.

Rear axle lock up briefly made a sound like someone rear ended the car and snap the left side rear cv axle. Vehicle is AWD and does not move on its own power.. Shop tow SUV and on the air found the axle inner joint just spins but car does not move, they pulled the axle and the is metal burnt into the axle shaft seems rear diff lock up, oil was clean on the differential.

We had our Mercedes GLS550 2017 with 59,295 overheat and call for immediate shut down on the Massachusetts Turnpike with my wife and child in the car. It was quite a dangerous situation because the failure caused by hose assembly 166-830-15-00 clamp (as described by the dealer as the reason for the loss of fluid and hose failure) caused almost an immediate overheating. The service advisor stated that it is "a quite common failure". I was quite suspicious, because just 11 days prior and 138 miles prior they had performed an Oil Change (Service B9), and thought their mechanic must have damaged the hose fitting they claimed broke. When I looked at the schematic, the fitting is quite close to the Oil Filter Cap, so I assumed that the mechanic accidentally knocked the plastic clamp and brok

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 office building and triggered a multi-unit response from local fire and police departments. When I came downstairs, my vehicle was engulfed in flames. The front end was completely destroyed. Mercedes-Benz USA sent an investigator on September 8, 2025 to examine the wreck. Despite numerous follow-ups, I have received no written report, no findings, and no communication from Mercedes-Benz since that inspection detailing any relevant information. Safety Context: In March 2024, Mercedes-Benz issue

Vehicle is only 3 weeks old. A faulty engine wire harness caused the vehicle to cease operating in traffic and put my family in a potentially life threatening situation. Mercedes did not replace but only "repaired" the wire, which we were told was not assembled correctly and was pinched in a bracket and subsequently chafed, which can potentially still cause a life threatening engine malfunction during normal operation. Mercedes is not willing to replace the engine harness wire, nor replace the vehicle. I fear for the safety of my family.

Fire started in the Engine and consumed the entire vehicle in less than 5 minutes

The standard headlights are extremely dim and unsuitable for nighttime driving. They have a brightness roughly equivalent to parking lights. This is a problem known to Mercedes according to many online boards. My vehicle is unsafe for night driving and needs to be retrofitted with some usable headlights. Visibility is only about 10 feet in front of the car which is unacceptable for highway driving.

Road visibility is poor with low beam lighting on normal weather condition during nighttime. It increases danger when it rains and/or foggy weather during nighttime.visited dealership and brought up issues, but mbenz can't fix it since it passes its standard. NHTSA, please do more research on this issue proactively for safety. I believe its a serious problem. This big luxury truck mostly use by families. Keep them safe!

The other day after a storm my SUV was parked at the street and when I opened the lift gate water start to coming out from the interior I also could see water in the interior ligths .

This is the 2nd time within a year my airmatic suspension system has went out while driving and I have lost control of driving my vehicle. I have paid 3900 to have the problem repaired it has not been a year and the same issue has happened. Faulty dangerous suspension system airbag suspension is dangerous and faulty.

I purchased this Vehical Al from auto of Texas in carralton tx I don’t have seatbelt on the second row so I am unable to buckle my children in I have contacted dealership three time for two weeks and they have not fixed the problem I have only have vehicle for 22 day didn’t not notice the where not seatbelts until after I purchased it my niece was thrown from the seat due to no seatbelt