https://plaincars.com/make/mercedes-benz-gls-450 New NHTSA complaints and recalls filed for the Mercedes-Benz GLS 450. en-us Wed, 23 Sep 2026 03:46:55 GMT https://plaincars.com/make/mercedes-benz-gls-450 https://plaincars.com/make/mercedes-benz-gls-450#complaint-2177163 Mon, 16 Feb 2026 00:00:00 GMT When I attempt to shift from park to to drive or reverse or even neutral the car wont respond. this has happened a couple of times in the last two months. I press on the brake in order to shift and it wont respond to any commands . I then have no choice but to turn off the car and then turn it back on. that usually works. this is unsafe if i was at an open parking lot or even on the street doing https://plaincars.com/make/mercedes-benz-gls-450 https://plaincars.com/make/mercedes-benz-gls-450#complaint-2176167 Thu, 12 Feb 2026 00:00:00 GMT The 2024 Mercedes-Benz GLS 450 exhibits a critical "Spatial Mapping Offset" defect within the MBUX 360-degree camera interface and the Active Brake Assist (ABA) logic. Specifically, the digital rendering of physical obstacles on the dashboard display is offset by approximately 0.5 feet (6 inches). This creates a "false clear" condition where the driver is visually signaled that an obstacle has bee https://plaincars.com/make/mercedes-benz-gls-450 https://plaincars.com/make/mercedes-benz-gls-450#complaint-2176168 Thu, 12 Feb 2026 00:00:00 GMT The 2024 Mercedes-Benz GLS 450 exhibits a critical "Spatial Mapping Offset" defect within the MBUX 360-degree camera interface and the Active Brake Assist (ABA) logic. Specifically, the digital rendering of physical obstacles on the dashboard display is offset by approximately 0.5 feet (6 inches). This creates a "false clear" condition where the driver is visually signaled that an obstacle has bee https://plaincars.com/make/mercedes-benz-gls-450 https://plaincars.com/make/mercedes-benz-gls-450#complaint-2176169 Thu, 12 Feb 2026 00:00:00 GMT The 2024 Mercedes-Benz GLS 450 exhibits a critical "Spatial Mapping Offset" defect within the MBUX 360-degree camera interface and the Active Brake Assist (ABA) logic. Specifically, the digital rendering of physical obstacles on the dashboard display is offset by approximately 0.5 feet (6 inches). This creates a "false clear" condition where the driver is visually signaled that an obstacle has bee https://plaincars.com/make/mercedes-benz-gls-450 https://plaincars.com/make/mercedes-benz-gls-450#complaint-2169568 Sat, 24 Jan 2026 00:00:00 GMT Car did not brake when going about 5-7mph and crashed into another car. https://plaincars.com/make/mercedes-benz-gls-450 https://plaincars.com/make/mercedes-benz-gls-450#complaint-2169569 Sat, 24 Jan 2026 00:00:00 GMT Car did not brake when going about 5-7mph and crashed into another car. https://plaincars.com/make/mercedes-benz-gls-450 https://plaincars.com/make/mercedes-benz-gls-450#complaint-2167121 Fri, 16 Jan 2026 00:00:00 GMT The vehicle caught fire while parked and running in the driveway of my home. There were no modifications, no accident, and no external cause. The fire occurred without warning and posed a serious safety risk to occupants and property. The vehicle was under manufacturer warranty at the time of the incident. The fire caused damages to my house too. There were no warning lamps or messages. Benz has n https://plaincars.com/make/mercedes-benz-gls-450 https://plaincars.com/make/mercedes-benz-gls-450#complaint-2166222 Wed, 14 Jan 2026 00:00:00 GMT The contact owns a 2017 Mercedes-Benz GLS450. The contact heard an abnormal humming sound when the vehicle was started, and the humming sound grew louder over time. The contact believed that the humming sound was coming from the driver's side headlamp. The contact stated that the headlamp was equipped with a small internal fan to dissipate heat. Additionally, other electrical failures were occurri https://plaincars.com/make/mercedes-benz-gls-450 https://plaincars.com/make/mercedes-benz-gls-450#complaint-2166223 Wed, 14 Jan 2026 00:00:00 GMT The contact owns a 2017 Mercedes-Benz GLS450. The contact heard an abnormal humming sound when the vehicle was started, and the humming sound grew louder over time. The contact believed that the humming sound was coming from the driver's side headlamp. The contact stated that the headlamp was equipped with a small internal fan to dissipate heat. Additionally, other electrical failures were occurri https://plaincars.com/make/mercedes-benz-gls-450 https://plaincars.com/make/mercedes-benz-gls-450#complaint-2166224 Wed, 14 Jan 2026 00:00:00 GMT The contact owns a 2017 Mercedes-Benz GLS450. The contact heard an abnormal humming sound when the vehicle was started, and the humming sound grew louder over time. The contact believed that the humming sound was coming from the driver's side headlamp. The contact stated that the headlamp was equipped with a small internal fan to dissipate heat. Additionally, other electrical failures were occurri https://plaincars.com/make/mercedes-benz-gls-450 https://plaincars.com/make/mercedes-benz-gls-450#complaint-2154556 Fri, 05 Dec 2025 00:00:00 GMT 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 mechanic stated the line was too close to the wheelbase, resulting in a pinpoint-sized hole. No warning https://plaincars.com/make/mercedes-benz-gls-450 https://plaincars.com/make/mercedes-benz-gls-450#complaint-2154557 Fri, 05 Dec 2025 00:00:00 GMT 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 mechanic stated the line was too close to the wheelbase, resulting in a pinpoint-sized hole. No warning https://plaincars.com/make/mercedes-benz-gls-450 https://plaincars.com/make/mercedes-benz-gls-450#complaint-2154558 Fri, 05 Dec 2025 00:00:00 GMT 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 mechanic stated the line was too close to the wheelbase, resulting in a pinpoint-sized hole. No warning https://plaincars.com/make/mercedes-benz-gls-450 https://plaincars.com/make/mercedes-benz-gls-450#complaint-2151423 Mon, 24 Nov 2025 00:00:00 GMT Both rear wheels on this vehicle have developed cracks which leads to tire pressure loss. Apparently, this is a common issue with Mercedes' heavier vehicles like the GLS and S series sedans. To be clear, I did not hit anything. I did not do any unusual driving. Both rear tires are fine. While you expect that certain components on a vehicle will have problems, it is also reasonable to expect https://plaincars.com/make/mercedes-benz-gls-450 https://plaincars.com/make/mercedes-benz-gls-450#complaint-2148571 Fri, 14 Nov 2025 00:00:00 GMT The panoramic sunroof spontaneously shattered while driving down the road. The glass blew out from the inside out. There didn't appear to be any issues with the sunroof before this. As far as safety, just the noise of the explosion was enough to surprise the driver causing a jerking of the steering wheel into the opposite lane of traffic which could have caused a head on collision. If the sunroo https://plaincars.com/make/mercedes-benz-gls-450 https://plaincars.com/make/mercedes-benz-gls-450#complaint-2142918 Fri, 24 Oct 2025 00:00:00 GMT 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 https://plaincars.com/make/mercedes-benz-gls-450 https://plaincars.com/make/mercedes-benz-gls-450#complaint-2139425 Mon, 13 Oct 2025 00:00:00 GMT 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 c https://plaincars.com/make/mercedes-benz-gls-450 https://plaincars.com/make/mercedes-benz-gls-450#complaint-2124293 Tue, 26 Aug 2025 00:00:00 GMT 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 major accidents car doesn’t stop mechanic says this is a Mercedes issue You may contact me at [XXX] https://plaincars.com/make/mercedes-benz-gls-450 https://plaincars.com/make/mercedes-benz-gls-450#complaint-2124294 Tue, 26 Aug 2025 00:00:00 GMT 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 major accidents car doesn’t stop mechanic says this is a Mercedes issue You may contact me at [XXX] https://plaincars.com/make/mercedes-benz-gls-450 https://plaincars.com/make/mercedes-benz-gls-450#complaint-2106880 Sat, 05 Jul 2025 00:00:00 GMT i've purchased brand new 2024 gls 450 mercedes benz and this is the 3rd times i have to bring my car to the mercedes facility to add a quarter of oil and jerky shifting so i dont feel safety and comfortable to drive this car anymore. i need help or my money back, what do i need to do?. https://plaincars.com/make/mercedes-benz-gls-450 https://plaincars.com/make/mercedes-benz-gls-450#complaint-2106881 Sat, 05 Jul 2025 00:00:00 GMT i've purchased brand new 2024 gls 450 mercedes benz and this is the 3rd times i have to bring my car to the mercedes facility to add a quarter of oil and jerky shifting so i dont feel safety and comfortable to drive this car anymore. i need help or my money back, what do i need to do?. https://plaincars.com/make/mercedes-benz-gls-450 https://plaincars.com/make/mercedes-benz-gls-450#complaint-2105373 Mon, 30 Jun 2025 00:00:00 GMT On [XXX], my wife and I were driving our 2023 Mercedes-Benz GLS 450 when I pulled over after sensing vibration on the highway. Upon inspection, all four tires were found to be severely worn, with the right rear tire completely bald and showing exposed steel belts. I have attached photos of the tires. The vehicle had been serviced at Mercedes-Benz of Wesley Chapel, FL at 10,000 miles in January 20 https://plaincars.com/make/mercedes-benz-gls-450 https://plaincars.com/make/mercedes-benz-gls-450#complaint-2100586 Sat, 14 Jun 2025 00:00:00 GMT 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 https://plaincars.com/make/mercedes-benz-gls-450 https://plaincars.com/make/mercedes-benz-gls-450#complaint-2099233 Tue, 10 Jun 2025 00:00:00 GMT Shows an error on the dashboard: 3rd Row, Right Malfunction Consult Workshop https://plaincars.com/make/mercedes-benz-gls-450 https://plaincars.com/make/mercedes-benz-gls-450#complaint-2099245 Tue, 10 Jun 2025 00:00:00 GMT The car has on 5+ occasions had the collision avoidance system shut down (photos of dash showing this are available and have been shared with the dealer). There were no weather incident at the time. Lane following........ same type of thing also shared with dealer. Most disturbing is on multiple occasions, with the speed control engaged driving on the interstate at 65 to 70 mph, the speed limit https://plaincars.com/make/mercedes-benz-gls-450 https://plaincars.com/make/mercedes-benz-gls-450#complaint-2099246 Tue, 10 Jun 2025 00:00:00 GMT The car has on 5+ occasions had the collision avoidance system shut down (photos of dash showing this are available and have been shared with the dealer). There were no weather incident at the time. Lane following........ same type of thing also shared with dealer. Most disturbing is on multiple occasions, with the speed control engaged driving on the interstate at 65 to 70 mph, the speed limit https://plaincars.com/make/mercedes-benz-gls-450 https://plaincars.com/make/mercedes-benz-gls-450#complaint-2099247 Tue, 10 Jun 2025 00:00:00 GMT The car has on 5+ occasions had the collision avoidance system shut down (photos of dash showing this are available and have been shared with the dealer). There were no weather incident at the time. Lane following........ same type of thing also shared with dealer. Most disturbing is on multiple occasions, with the speed control engaged driving on the interstate at 65 to 70 mph, the speed limit https://plaincars.com/make/mercedes-benz-gls-450 https://plaincars.com/make/mercedes-benz-gls-450#complaint-2096413 Sat, 31 May 2025 00:00:00 GMT Over the past 14 months, the emergency breaking system has gone off approximately 25 times during non-emergency situations. Most of the incidents have been when no other vehicles or impediments are anywhere close by. This has created a very significantly unsafe and ongoing situation for my family which so far are being ignored by Mercedes Benz. https://plaincars.com/make/mercedes-benz-gls-450 https://plaincars.com/make/mercedes-benz-gls-450#complaint-2092556 Fri, 16 May 2025 00:00:00 GMT On [XXX], I was heading home from work traveling [XXX] on [XXX] through Atlanta's usual heavy traffic. I smelled smoke inside my car and saw fire flames coming from under my passenger seat. My initial reaction was to try to put the fire out with my hat without burning myself. Also, I had to try to navigate across multiple lanes of traffic without hitting anyone and avoiding anyone hitting me. https://plaincars.com/make/mercedes-benz-gls-450 https://plaincars.com/make/mercedes-benz-gls-450#complaint-2092557 Fri, 16 May 2025 00:00:00 GMT On [XXX], I was heading home from work traveling [XXX] on [XXX] through Atlanta's usual heavy traffic. I smelled smoke inside my car and saw fire flames coming from under my passenger seat. My initial reaction was to try to put the fire out with my hat without burning myself. Also, I had to try to navigate across multiple lanes of traffic without hitting anyone and avoiding anyone hitting me.