2024 Mercedes-Benz GLS 450 4MATIC Problems
Compared with other Mercedes-Benz GLS 450 4MATIC years
Too new to compare
- Model years are compared once their first three years of complaints are in; the 2024 can be compared from 2027.
- Most reported part: Other or unknown (6 complaints).
Based only on NHTSA complaints, recalls and investigations. Not adjusted for how many vehicles were sold, and not a reliability rating. How this is calculated
- Complaints
- 15filed with NHTSA
- Median mileage
- —no mileage reported
- Recalls
- 0campaigns on record
- Trend
- Too newThis model year is less than 4 years old, so a trend is not meaningful yet.
- NHTSA crash rating
- —no overall rating published
- EPA fuel economy
- 21 mpgcombined, 3.0L 6-cyl · hybrid AWD · 19 city / 24 hwy
Sources: NHTSA records for the 2024 Mercedes-Benz GLS 450 4MATIC (complaints, recalls, investigations), EPA fuel economy. Report an error
NHTSA recorded 15 consumer complaints for the 2024 Mercedes-Benz GLS 450 4MATIC. The part named most often is other or unknown, with 6 complaints (40% of the total), followed by electrical system (3) and forward collision avoidance (3). Of all complaints, 4 involved a crash, 1 an injury, according to the filers. NHTSA lists 0 recall campaigns and 231 technical service bulletins for this model year. Other or unknown complaints overlap with 13 technical service bulletins filed under the same part. Electrical system complaints overlap with 97 technical service bulletins filed under the same part.
This model year has fewer than 25 complaints on record, so the numbers below can change a lot with a few new reports.
Which parts are reported most
Complaints can name more than one part, so the counts add up to more than the total. Select a part to see its complaints, recalls and bulletins.
- Other or unknown6 40%
- Electrical system3 20%
- Wheels2 13%
- Engine1 6.7%
- Lane departure1 6.7%
- Seats1 6.7%
- Body and structure1 6.7%
- Tires1 6.7%
Also reported: Visibility (wipers, defrost, mirrors) (1).
Example complaints
Other or unknown: “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?.”
NHTSA complaint #11671311, filed 2025-07Electrical system: “Head-up display unit inoperable on multiple occasions over a span of few months during the first year of ownership. Display panel occasionally went blank, including while driving.”
NHTSA complaint #11635164, filed 2025-01Forward collision avoidance: “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 been cleared while the vehicle’s chassis is still in a strike position. On September 27, 2025, this defect resulted in a collision with a stationary post. …”
NHTSA complaint #11717545, filed 2026-02Wheels: “During interstate travel in rainy conditions, the vehicle appeared to lose traction and hydroplane. The tires appeared to have adequate remaining tread; however, they did not provide expected traction and the vehicle felt as though it was driving on ice. This was inconsistent with my prior experience operating the vehicle for over a year in various weather conditions without encountering similar issues. The Electronic Stability Program (ESP), traction control system, and 4MATIC all-wheel drive system did not appear to intervene to stabilize the vehicle. …”
NHTSA complaint #11721041, filed 2026-02Complaints by year filed
This model year is less than 4 years old, so a trend is not meaningful yet.
Fuel economy and running cost
EPA ratings for each 2024 Mercedes-Benz GLS 450 4MATIC version. Annual fuel cost is the EPA's estimate at its current fuel prices for 15,000 miles a year (55% city driving).
| Version | Engine | Transmission | City | Hwy | Comb. | Fuel / yr |
|---|---|---|---|---|---|---|
| GLS450 4matic AWD | 3.0L 6-cyl · hybrid | 9-speed automatic | 19 | 24 | 21 | $3,900 |
Source: U.S. EPA and Department of Energy, fueleconomy.gov. Ratings are for comparing vehicles; real-world mileage varies with driving and conditions.
Recalls and investigations
NHTSA lists no recall campaigns for the 2024 Mercedes-Benz GLS 450 4MATIC in the data used here. A recall can apply to some vehicles of a model year and not others, so check a specific vehicle by VIN at nhtsa.gov/recalls.
Technical service bulletins
TSBs are manufacturer notes to dealers about known repair procedures. They are not recalls and do not by themselves mean a vehicle has a fault. 231 on record; the latest 10 are shown.
- 11038188Sep 26, 2026Steering. Complaint Slight creaking noises when steering. Cause Noises may come from one or more sleeves of the horn contact plate. Remedy Remove the horn contact plate and check the sleeves for noise; see…
- 11038187Sep 26, 2026Transmission and drivetrain. Complaint Customer complaints relating to automatic transmission 725.0 (NAG3 Classic /9G‑TRONIC automatic transmission) and 725.1 (NAG3 facelift/9G‑TRONIC automatic transmission facelift) For…
- 11038185Sep 26, 2026Engine. Complaint Sporadic warning message in instrument cluster "Engine oil pressure, stop switch off vehicle" (or similar) is shown in red on vehicles with low mileage. Cause Directional control valve may…
- 11038186Sep 22, 2026Brakes. Complaint Repeat workshop visit for vehicle vibration while braking from 60MPH. NOTE: Although the symptom is similar to a tire or wheel vibration, it is usually readily noticeable that it is…
- 11038176Sep 17, 2026Engine. Complaint Red coolant warning in instrument cluster. Fault codes U019F00 or U019F87 current/stored in MRG1 control unit. Cause Various causes Remedy Perform guided test for fault code U019F with…
- 11038174Sep 15, 2026Electrical system. Complaint Radio station cover art does not refresh when switching stations. The UI continues to show the old station’s artwork instead of updating to the new one. Cause When a new station change…
- 11038217Sep 14, 2026Body and structure. Complaint Clanking noise from the area of the speakers in the doors. Cause Under analysis. Remedy To narrow down the cause, first of all remove the door trim. • If the noise continues to occur even…
- 11037987Sep 14, 2026Transmission and drivetrain. Complaint Only vehicles with a variable transfer case are affected. This can be identified through control unit N45 or N15/7 in the quick test. When accelerating with light load, vibrations or…
- 11037834Sep 14, 2026Transmission and drivetrain. Complaint Whining / humming noises (described as foghorn‑like) from the drivetrain in the rear axle area during cornering. (figure 1) On the above‑mentioned vehicles with a mileage up to 15,000 km…
- 11038224Sep 11, 2026Electrical system. Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject vehicles, the control unit software for the front signal acquisition and actuation module (SAM-F)…
Other model years of the Mercedes-Benz GLS 450 4MATIC
| Year | Complaints | Median mi | Recalls | Crash ★ | MPG | Score (50 = typical) | Trend |
|---|---|---|---|---|---|---|---|
| 2025 | 7 | 10,000 | 1 | — | 21 | — | Too new |
| 2024 | 15 | — | 0 | — | 21 | — | Too new |
| 2023 | 7 | 11,000 | 5 | — | 20 | — | Too new |
| 2022 | 17 | 25,100 | 10 | — | 20 | — | Rising |
All Mercedes-Benz GLS 450 4MATIC model years
Frequently asked questions
How many NHTSA complaints does the 2024 Mercedes-Benz GLS 450 4MATIC have?
NHTSA recorded 15 consumer complaints for the 2024 Mercedes-Benz GLS 450 4MATIC as of Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
What part of the 2024 Mercedes-Benz GLS 450 4MATIC is reported most often?
Other or unknown is named most often, in 6 complaints (40% of the total), followed by electrical system with 3.
Has the 2024 Mercedes-Benz GLS 450 4MATIC been recalled?
NHTSA lists no recall campaigns for this model year in the data used here. To check a specific vehicle, enter its VIN at nhtsa.gov/recalls.
What gas mileage does the 2024 Mercedes-Benz GLS 450 4MATIC get?
The EPA rates the 2024 Mercedes-Benz GLS 450 4MATIC (GLS450 4matic, 3.0L 6-cyl · hybrid) at 21 mpg combined, 19 city and 24 highway, with an estimated annual fuel cost of $3,900 at 15,000 miles a year. Other engine and drive versions are rated differently.
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. Fuel economy is from the EPA and DOE (fueleconomy.gov).
Complaint counts come from NHTSA’s public complaint database; we count each complaint once. The source records for this vehicle are on nhtsa.gov. Scores and trends are our own summaries of that data, described in the methodology. This page is not legal, safety or repair advice: for a specific vehicle, check its VIN at nhtsa.gov/recalls and ask a qualified mechanic. See an error? Tell us.