2021 Mercedes-Benz GLS580 Engine Problems
- Complaints
- 2about this part
- Share
- 40%of 5 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the engine of the 2021 Mercedes-Benz GLS580, 40% of the 5 complaints for this model year.
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.
“Delivered an unfinished or car with a broken part,Seat Problem not locking properly, Electrical Problem, Engine Light Came on, ESP warning, Suspension Problem, Battery Problem, Steering Jerking, Mirror Problem which they said Mercedes Benz aware of it, some sort of sound, car getting hot excessively.”
NHTSA complaint #11574364, filed 2024-02“The vehicle suffered a sudden, catastrophic 48V mild-hybrid electrical power supply breakdown and complete system failure while traveling at highway speeds during a cross-country move. The sudden failure forced an emergency lane change into an isolation zone just off the highway. The sudden failure left the cabin completely powerless with no operational safety systems, hazard lights, or air conditioning in extreme 100+ degree heat. …”
NHTSA complaint #11753406, filed 2026-07Related service bulletins
- 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…
- 11036229Aug 12, 2026Complaint Oil leaks found on M176 or M177 engines diagnosed to be from the cylinder head cover area Cause Unknown (under investigation) Remedy If oil leaks are found at left or…
- 11035234Jul 24, 2026Complaint Check Engine Light ON with DTC P012800 "The Coolant Temperature is Below the Specified Temperature" active and/or stored in the ME (N3/10). There are no drivability…
- 11031581Apr 21, 2026Complaint CEL ON with DTC P012800 "The Coolant Temperature is Below the Specified Temperature" active and stored in the ME (N3/10). There are no drivability concerns related to…
- 11028807Feb 14, 2026Mercedes-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…
- 11028810Feb 11, 2026Complaint CEL on with Code P012800 "The Coolant Temperature is Below the Specified Temperature" Cause Under investigation. This is not an issue that affects drivability or…
- 11027678Jan 15, 2026Complaint Customer states check engine light on in the dash. Vehicle has one or more DTC's Present P164B00, P164B09, P2B4400, P005A07, P005C07, P005A09, P005C09, P003C07…
- 11027120Jan 6, 2026Complaint CEL on with Code P012800 "The Coolant Temperature is Below the Specified Temperature" Cause Under investigation. This is not an issue that affects drivability or…
- 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…
- 11015052Feb 14, 2025On certain Model Year 2019 - 2023 C / E / G / GLC / GLE / GLS / GT/ S / SL - Class vehicles fitted with an eight-cylinder engine, the sealing ring in the engine thermostat could…
Engine: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2021 | 2 | 40% |
Other parts of the 2021 Mercedes-Benz GLS580
2 complaintsAir bags
1 complaintsFuel system
1 complaintsSuspension
1 complaintsVisibility (wipers, defrost, mirrors)
1 complaints
← All problems reported for the 2021 Mercedes-Benz GLS580
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.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology