2023 Mercedes-Benz GLS 450 4Matic

Routine

Owners filed 7 complaints about this vehicle with federal regulators, most often about the service brakes. It has been recalled 5 times.

What fails
ComponentReportsCrashesFiresInjuries
Service Brakes3
000
Engine2
000
Fuel System, Gasoline1
000
Electrical System1
000

5 safety recalls

Part 573 reports
Electrical System › Wiring24V207000
Filed Mar 15, 2024116,020 vehiclesMercedes-Benz Usa, Llc

Defect. Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2023-2024 GLE 350, 2020-2024 GLE 450, 2020-2023 GLS 580, GLE 580, 2019-2023 GLS 450, 2021-2023 Maybach GLS 600, AMG GLS 63, 2021-2024 AMG GLE 53, AMG GLE 53 Coupe, and AMG GLE 63 S vehicles. A 48-Volt ground connection under the passenger seat may not be secured properly, resulting in the ground connection overheating.

Risk. An overheated ground connection can increase the risk of a fire.

Remedy. Dealers will inspect and tighten the 48-Volt ground connection as necessary, free of charge. Owner notification letters were mailed on May 3, 2024. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2024040002.

Power Train › Automatic Transmission › Control Module › Software24V118000
Filed Feb 16, 2024105,071 vehiclesMercedes-Benz Usa, Llc

Defect. Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2020-2023 GLE 450 and GLS 450 vehicles. The transmission may not fully downshift in certain conditions, causing the engine to stall.

Risk. An engine stall increases the risk of a crash.

Remedy. Dealers will update the transmission control unit software, free of charge. Owner notification letters were mailed March 29, 2024. Owners may contact MBUSA customer service at 1-800-367-6372.

Fuel System, Gasoline › Delivery › Fuel Pump23V880000
Filed Dec 21, 202379,676 vehiclesMercedes-Benz Usa, Llc

Defect. Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2021-2024 GLE, GLS, C-Class, E-Class, S-Class, SL, GLC, CLS, AMG GT, and G-Class vehicles. Please refer to MBUSA's recall report for specific vehicle details. The fuel pump may shutdown, causing a loss of drive power.

Risk. A loss of drive power can increase the risk of a crash.

Remedy. Dealers will replace the fuel pump, free of charge. Owner notification letters were mailed on June 28, 2024. Owner notification letters will be mailed in phases, on February 23, 2024, April 19, 2024, June 28, 2024, August 9, 2024, October 1, 2024, and December 2, 2024. Owners may contact MBUSA customer service at 1-800-367-6372. This recall is an expansion of NHTSA recall number 23V-445.

Fuel System, Gasoline › Delivery › Fuel Pump23V445000
Filed Jun 26, 2023143,551 vehiclesMercedes-Benz Usa, Llc

Defect. Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2021-2023 C-Class, E-Class, S-Class, CLS, SL, GT, GLC, GLE, GLS, and G-Class vehicles. Please refer to MBUSA's recall report for specific vehicle details. The fuel pump may shutdown, which can result in a loss of drive power.

Risk. A loss of drive power can increase the risk of a crash.

Remedy. Dealers will replace the fuel pump, free of charge. Owner notification letters were mailed on June 14, 2024. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2023070012.

Structure › Body23V178000
Filed Mar 17, 202370,225 vehiclesMercedes-Benz Usa, Llc

Defect. Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2022-2023 GLE350, GLE450, GLE580, GLS450, GLS580, Maybach GLS600, AMG GLE53, AMG GLE63 S, and AMG GLS63 vehicles. The rear door window trim bars may detach from the vehicle while driving.

Risk. Detached trim bars may cause a road hazard and increase the risk of a crash or injury.

Remedy. Dealers will inspect and secure the rear window trim bars, as necessary, free of charge. Owner notification letters were mailed May 5, 2023. Owners may contact MBUSA customer service at 1-800-367-6372. This recall is an expansion of previous recall number 22V-680. MBUSA's number for this recall is 2023040011.

What owners reported

Newest filings
Service Brakes
Filed Apr 14, 2025ME

The car recently underwent a software update at the dealership for a backup camera issue. When I was driving home on the highway, the car suddenly braked and the seat belts automatically tightened up. This happened 3 additional times on the highway about 5 days later. I had turned off the automatic braking system and it seemed to go away. Then, with the system off, we experienced this again yesterday while on the highway at 70mph. The braking lasts for 1-3 seconds. There is no audible alert or dashboard display. IT renders the car quite unstable as it feels as though the rear brakes are being activated before the front. I reported this to the dealership and they want to inspect the car.

Service Brakes
Filed Oct 2, 2024TX

There have been 3 incidents where the car responded to unknown stimuli by braking hard. 3 months ago it happened while making a left turn through an intersection, driving about 10 mph the brakes unexpectedly locked up, luckily the person behind me took evasive action and didn't hit me; 2 weeks later it happened again, I was driving on I-45 attempting to pass slower drivers, the brakes dramatically engaged while I was driving over a slight hill, today it happened again when it mistook a vehicle in a different lane of traffic, and performed a hard brake evasive measure even though there was no chance of collision and nothing in front of the vehicle.

Engine
Filed Aug 21, 2024NC

When coming to a stop and applying the break, the transmission stalled. a warning was issued around lane keeping assist and a second warning. Then the transmission light was on. It was not at risk in the moment because no one was behind me and I was coming to a stop sign. If it prevented me from stopping I might have gone through the stop sign It is at the dealership today to service. no warning lamps, messages or other symptoms.

Fuel System, Gasoline
Filed Jul 24, 202411,000 milesNC

The contact owns a 2023 Mercedes-Benz GLS450. The contact received notification of NHTSA Campaign Number: 23V880000 (Fuel System Gasoline) however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact stated while driving approximately 10 MPH and making a left turn, the vehicle stalled. The contact stated that an unknown warning was illuminated; however, when the vehicle was restarted, the warning light was off. The vehicle was taken to a dealer who was unable to duplicate the failure. The vehicle was not repaired. The contact stated that the failure reoccurred after receiving the recall notification. The failure mileage was approximately 11,000. Parts distribution disconnect.

Engine
Filed Oct 4, 2023IL

Twice the vehicle has stalled while driving. I see that there is a recall on my model for a faulty fuel pump which causes this problem, but my dealer claims my vehicle is not part of the recall even though it is having the same issue.

Electrical System
Filed Aug 9, 2023TX

I have a new GLS450 and on two separate occasions the car has shut down at a stop with no warning. First time was approximately mid July of 2023 with about 1,700miles. While at a stop the instrument panel displayed a text box with the words “Malfunction” across the screen, and proceeded to shut down. After a minute we were able to restart the car. Took it back to the dealership and they were not able to get any codes or reason why it happened. Now 3 weeks later it happened again, and back at the same dealership from where I purchased it. Again, same story that they are not able to get any codes as to what malfunctioned.

Service Brakes
Filed May 25, 2023NY

This is [XXX], a Mercedes customer who purchased a brand new 2023 GLS 450 (VIN:[XXX] ) in April 2023 from the Mercedes dealer in White Plains NY. I am contacting you about the Mercedes rusting claim. On May 22, 2023, less than a month after the purchase, a sheer of orange powdery rust was discovered (video available) on all steel frames of the four wheels. I contacted the sales person ([XXX]) , who referred to a manager ([XXX]) who told me that it was “normal because every car in our parking lot has the same thing.” I was very unhappy and disappointed with the response. The rusting obviously is a defect which is not normal. It is potentially dangerous and deadly for customers. INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

7 of 7 complaints, reproduced as filed.

Across model years

Worst on record: 2024
YearComplaintsRecallsFiresDeathsAssessment
20262200Routine
20257100Routine
202415000Routine
2023 — this page7500Routine
2022151010Routine

Compare every GLS 450 4Matic year →

Reading this record

No unusual pattern of severe incidents in the complaint record.

Complaint counts track how many cars were sold and how long they have been on the road as much as they track quality. A common model from 2013 has had a decade to accumulate reports; a rare one from last year has not. The signal worth weighing is in the severity columns, in whether the same component keeps appearing, and in whether the manufacturer eventually opened a recall for it.

Recall repairs are free for as long as the recall stands. Check whether a specific car still has open work at NHTSA's VIN lookup.

Most recent recall on file: Mar 15, 2024. Source: NHTSA Office of Defects Investigation.