2025 Mercedes-Benz GLS 450 4MATIC Engine Problems
- Complaints
- 1about this part
- Share
- 14%of 7 total for the year
- Median mileage
- 14,050miles
- Trend
- Too newThis model year is less than 4 years old, so a trend is not meaningful yet.
NHTSA recorded 1 complaints about the engine of the 2025 Mercedes-Benz GLS 450 4MATIC, 14% of the 7 complaints for this model year. Where a mileage was given, the median is 14,050 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.
“The contact owns a 2025 Mercedes-Benz GLS450 4Matic. The contact stated that while driving at an undisclosed speed, the engine overheated, with several unknown warning lights illuminated. The vehicle was taken to the dealer, where it was diagnosed that the coolant pump had failed and needed to be replaced. The vehicle was repaired. The contact then stated that while driving at an undisclosed speed, there was a metallic clicking sound was coming from the engine compartment, and there were no warning lights illuminated. …”
NHTSA complaint #11692173, filed 2025-10, 14,050 milesRelated service bulletins
- 11038185Sep 26, 2026Complaint 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…
- 11038176Sep 17, 2026Complaint 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…
- 11026596Dec 6, 2025Complaint <p>ESP®, BAS, PRE-SAFE®, HOLD function, Hill-Start Assist, ESP® trailer stabilization, Adaptive Brake Lights, Lane Keeping Assist, Blind Spot Assist, Adaptive Brake…
- 11024905Oct 31, 2025Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject vehicles, the engine control unit software does not correspond to current…
- 11023363Sep 25, 2025Complaint Coolant level warning in instrument cluster. Coolant odor or leaking from coolant expansion reservoir. Cause Coolant wicking through electrical contacts, or level…
- 11023037Sep 5, 2025Complaint Customer states CEL is active in instrument cluster, may report rough running. Cause Possible ME control unit software Remedy On applicable vehicles with complaint…
- 11021105Jul 29, 2025Complaint Coolant level warning in instrument cluster. Coolant odor or leaking from coolant expansion reservoir. Cause Coolant wicking through electrical contacts, or level…
Engine: other model years
Other parts of the 2025 Mercedes-Benz GLS 450 4MATIC
2 complaintsElectrical system
2 complaintsEngine cooling
1 complaintsForward collision avoidance
1 complaintsLane departure
1 complaintsSeat belts
1 complaintsSteering
1 complaintsBody and structure
1 complaintsSuspension
1 complaintsVisibility (wipers, defrost, mirrors)
1 complaints
← All problems reported for the 2025 Mercedes-Benz GLS 450 4MATIC
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Nov 1, 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