AutoUtility currently tracks 27 official NHTSA owner defect complaints for the 2019 Mercedes-Benz GLS. Engine & Cooling issues are the most frequently reported category, appearing in 8 complaints (29.6% of submitted records). Among these NHTSA complaint records, 1 filing cites a crash, 2 cite a fire, 1 reports one or more injuries. The 2019 Mercedes-Benz GLS belongs to the 2nd Generation / GL Facelift (X166) platform.
Factual proportion of owner complaints categorized by automotive subsystem in NHTSA records
8 owner complaints submitted to NHTSA ODI for this subsystem.
5 owner complaints submitted to NHTSA ODI for this subsystem.
3 owner complaints submitted to NHTSA ODI for this subsystem.
3 owner complaints submitted to NHTSA ODI for this subsystem.
Representative defect filings submitted by owners to the NHTSA Office of Defects Investigation
"the vehicle suffered a sudden and catastrophic engine failure while being driven on the freeway at about 60mph. The engine seized and the vehicle lost propulsion creating a serious safety concern"
"The front vehicle hood keep saying it open but is lock keep getting a message saying is open I am afraid is might come out lock and cause me to an accident"
"I am reporting a serious safety defect in my 2019 Mercedes-Benz GLS450. My vehicle experienced low oil pressure warnings and engine warning lights, which were diagnosed as a faulty oil pump solenoid valve. The repair required removing major engine components, resulting in a cost of $5,000 that I..."
"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..."
"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..."
Reported defect complaint volume across sibling model years (2017–2026)
| Model Year | NHTSA Complaints | Crash Reports | Safety Recalls | Detailed Report |
|---|---|---|---|---|
| 2017 Mercedes-Benz GLS | 41 | 1 | 8 | View 2017 Problems → |
| 2018 Mercedes-Benz GLS | 22 | 1 | 4 | View 2018 Problems → |
| 2019 Mercedes-Benz GLS Current Page | 27 | 1 | 3 | Current |
| 2020 Mercedes-Benz GLS | 38 | 3 | 24 | View 2020 Problems → |
| 2021 Mercedes-Benz GLS | 37 | 2 | 12 | View 2021 Problems → |
| 2022 Mercedes-Benz GLS | 15 | 2 | 10 | View 2022 Problems → |
| 2023 Mercedes-Benz GLS | 10 | 0 | 5 | View 2023 Problems → |
| 2024 Mercedes-Benz GLS | 0 | 0 | 0 | View 2024 Problems → |
| 2025 Mercedes-Benz GLS | 0 | 0 | 0 | View 2025 Problems → |
| 2026 Mercedes-Benz GLS | 0 | 0 | 0 | View 2026 Problems → |
Complete distribution of consumer defect reports across all 16 granular NHTSA system and subsystem classifications
| Vehicle Component / System | Total Complaints | Crash Reports | Fire Reports | Injury Entries | Fatality Entries |
|---|---|---|---|---|---|
| Other / Uncategorized NHTSA category: UNKNOWN OR OTHER | 5 | 0 | 0 | 0 | 0 |
| Engine NHTSA category: ENGINE | 3 | 0 | 0 | 0 | 0 |
| Engine & Cooling NHTSA category: ENGINE AND ENGINE COOLING | 3 | 0 | 1 | 0 | 0 |
| Powertrain NHTSA category: POWER TRAIN | 2 | 0 | 0 | 0 | 0 |
| STEERING,SUSPENSION | 2 | 0 | 1 | 0 | 0 |
| Suspension NHTSA category: SUSPENSION | 2 | 0 | 0 | 0 | 0 |
| Air Bags NHTSA category: AIR BAGS | 1 | 0 | 0 | 0 | 0 |
| ELECTRICAL SYSTEM,SERVICE BRAKES | 1 | 0 | 0 | 0 | 0 |
| ELECTRICAL SYSTEM,STRUCTURE,BACK OVER PREVENTION | 1 | 0 | 0 | 0 | 0 |
| ENGINE,ELECTRICAL SYSTEM | 1 | 0 | 0 | 0 | 0 |
| FUEL SYSTEM, GASOLINE,AIR BAGS | 1 | 1 | 0 | 2 | 0 |
| Structure & Body NHTSA category: STRUCTURE | 1 | 0 | 0 | 0 | 0 |
| SUSPENSION,ENGINE AND ENGINE COOLING,SEATS | 1 | 0 | 0 | 0 | 0 |
| Tires NHTSA category: TIRES | 1 | 0 | 0 | 0 | 0 |
| UNKNOWN OR OTHER,BACK OVER PREVENTION | 1 | 0 | 0 | 0 | 0 |
| VEHICLE SPEED CONTROL,SERVICE BRAKES | 1 | 0 | 0 | 0 | 0 |
Cross-reference safety recalls, crash test safety ratings, and EPA fuel economy for this model year
Key performance indicators, EPA fuel economy specs, powertrain variants, and summary ratings.
Official recall campaigns, safety defect descriptions, and manufacturer free remedy instructions.
NHTSA 5-Star NCAP crash test results, driver assistance systems, and rollover resistance ratings.
EPA fuel economy ratings, electric range, and annual energy cost benchmarks.
Direct, deterministic answers synthesized from verified United States government databases for the 2019 Mercedes-Benz GLS
In official NHTSA consumer records, the most frequently cited issue area for the 2019 Mercedes-Benz GLS is Engine & Cooling, appearing in 8 records (29.6% of submitted filings).
Secondary reported categories include Suspension (5) and Electrical System (3).
AutoUtility does not issue subjective reliability scores or commercial ratings. In official United States government records, NHTSA tracks 27 consumer defect complaints and 3 safety recall campaigns for the 2019 Mercedes-Benz GLS.
Reviewing documented component complaint distributions, recall remedy notices, and active federal investigations provides an objective, evidence-based view of the vehicle's historical safety and defect record.
Among consumer complaint records on file with NHTSA for the 2019 Mercedes-Benz GLS, 1 filing cites a crash, 2 cite smoke or fire, and 1 report one or more injuries.
Incident entries represent consumer descriptions at the time of submission to federal authorities and do not establish mechanical causation or legal liability.
The complaint records on this page are retrieved directly from the NHTSA Office of Defects Investigation (ODI) public database under 49 CFR Part 576.
Local Production Store Compiled: August 2026 • Deterministic Audited Dataset • Zero Dynamic External API Runtime Latency.