AutoUtility currently tracks 34 official NHTSA owner defect complaints for the 2015 Mercedes-Benz GL-Class. Engine & Cooling issues are the most frequently reported category, appearing in 15 complaints (44.1% of submitted records). Among these NHTSA complaint records, 2 filings cite a crash, 3 cite a fire, 1 reports one or more injuries.
- • Total NHTSA Complaints: 34 reports
- • #1 Reported Problem Area: Engine & Cooling (15 reports • 44.1% of submitted complaints)
- • Secondary Problem Areas: Electrical System (4), Seats & Interior (4)
- • Crash-Citing Complaints: 2 filings
- • Fire-Citing Complaints: 3 filings
- • Complaints Reporting Injuries / Fatalities: 1 injury filings • 0 fatality filings
Most Reported Problems for 2015 Mercedes-Benz GL-Class
Top automotive subsystem defect categories ranked by unique owner complaint volume in federal records
Engine & Cooling
Electrical System
Seats & Interior
Body & Structure
Suspension
Recent NHTSA Owner Reports for 2015 Mercedes-Benz GL-Class
Representative defect filings submitted by owners to the NHTSA Office of Defects Investigation
"See attached document for complaint."
"My 2015 Mercedes-Benz GLE 450 experienced an unexpected vehicle fire on Feb 13th 2026. The vehicle was just parked when I noticed smoke from the engine. The vehicle caught fire within a short period of time, and 911 was called. There was no known external cause for the fire. The incident appeared..."
"My 2015 Mercedes-Benz GL63 AMG has suffered two separate ECU failures caused by oil migrating through the engine wiring harness. The first failure occurred at ~42,600 miles in 2020, and the second at ~59,000 miles in 2023. Both times, the vehicle developed misfires, check-engine warnings, and..."
"To Whom It May Concern: I am writing to formally request the National Highway Traffic Safety Administration’s assistance regarding a critical safety defect in my 2015 Mercedes‑Benz GL 450 (M278 engine). I purchased this vehicle in October 2024 with 76,000 miles, and it now has about 87,000 miles...."
"The contact owns 2015 Mercedes-Benz GL450. The contact stated that the check engine warning light was illuminated. The vehicle was taken to the dealer, where DTC code: P060A00 was retrieved. The dealer determined that the solenoid valve had failed and needed to be replaced. The contact related the..."
Complaint History for Mercedes-Benz GL-Class
Reported defect complaint volume across sibling model years (2015–2016)
| Model Year | NHTSA Complaints | Crash Reports | Safety Recalls | Detailed Report |
|---|---|---|---|---|
| 2015 Mercedes-Benz GL-Class Current Page | 34 | 2 | 0 | Current |
| 2016 Mercedes-Benz GL-Class | 20 | 1 | 1 | View 2016 Problems → |
Detailed NHTSA Component Breakdown for 2015 Mercedes-Benz GL-Class
Complete distribution of consumer defect reports across all 16 granular NHTSA system and subsystem classifications
| Vehicle Component / System | Total Complaints | Crash Reports | Fire Reports | Reported Injury Entries | Reported Fatality Entries |
|---|---|---|---|---|---|
| Engine NHTSA category: ENGINE | 8 | 0 | 1 | 1 | 0 |
| Seats & Restraints NHTSA category: SEATS | 4 | 0 | 0 | 0 | 0 |
| ELECTRICAL SYSTEM,ENGINE | 3 | 0 | 0 | 0 | 0 |
| Other / Uncategorized NHTSA category: UNKNOWN OR OTHER | 3 | 0 | 0 | 0 | 0 |
| Fuel & Propulsion System NHTSA category: FUEL/PROPULSION SYSTEM | 2 | 0 | 0 | 0 | 0 |
| Suspension NHTSA category: SUSPENSION | 2 | 0 | 0 | 0 | 0 |
| Vehicle Speed Control NHTSA category: VEHICLE SPEED CONTROL | 2 | 1 | 0 | 0 | 0 |
| Visibility & Wipers NHTSA category: VISIBILITY/WIPER | 2 | 0 | 0 | 0 | 0 |
| ELECTRICAL SYSTEM,STRUCTURE,ENGINE | 1 | 0 | 0 | 0 | 0 |
| Engine & Cooling NHTSA category: ENGINE AND ENGINE COOLING | 1 | 0 | 0 | 0 | 0 |
| Doors, Latches & Locks NHTSA category: LATCHES/LOCKS/LINKAGES | 1 | 0 | 0 | 0 | 0 |
| Powertrain NHTSA category: POWER TRAIN | 1 | 1 | 0 | 0 | 0 |
| Steering NHTSA category: STEERING | 1 | 0 | 0 | 0 | 0 |
| STRUCTURE,UNKNOWN OR OTHER,ENGINE | 1 | 0 | 1 | 0 | 0 |
| SUSPENSION,POWER TRAIN,ELECTRONIC STABILITY CONTROL (ESC) | 1 | 0 | 0 | 0 | 0 |
| UNKNOWN OR OTHER,ENGINE | 1 | 0 | 1 | 0 | 0 |
The complaint records on this page are retrieved directly from the NHTSA Office of Defects Investigation (ODI) public database.
Local Production Store Compiled: August 2026 • Deterministic Audited Dataset • Zero Dynamic External API Runtime Latency.