Mercedes-Benz GLS450 complaints by model year
139 owner complaints filed with NHTSA. Red numbers above the columns are recall campaigns for that model year.
| Model year | Complaints | Crashes | Fires | Recall campaigns |
|---|---|---|---|---|
| 2021 | 30 | 1 | 2 | 12 |
| 2020 | 36 | 3 | 1 | 22 |
| 2019 | 24 | 1 | 1 | 3 |
| 2018 | 14 | 1 | 3 | 3 |
| 2017 | 35 | 1 | 6 | 8 |
Counts are owner reports, not failure rates. Higher sales years tend to draw more reports. Source: NHTSA ODI, retrieved Oct 6, 2026.
Among the last 15 model years at least five years old; newer years are left out because owners are still filing reports. Every year compared →
Problem areas by model year
Complaints that name each component, 2017–2021. Darker cells mean more reports. One complaint can name several components.
| Component | 2017 | 2018 | 2019 | 2020 | 2021 |
|---|---|---|---|---|---|
| Electrical system | 8 | 2 | 3 | 18 | 14 |
| Unknown or other | 7 | 1 | 6 | 4 | 8 |
| Engine | 8 | 2 | 3 | 9 | 3 |
| Fuel/propulsion system | 5 | 1 | 0 | 7 | 0 |
| Forward collision avoidance | 1 | 1 | 0 | 7 | 2 |
| Power train | 2 | 1 | 3 | 4 | 1 |
| Structure | 2 | 2 | 2 | 2 | 1 |
| Service brakes | 1 | 3 | 2 | 2 | 0 |
Source: NHTSA ODI owner complaints, retrieved Oct 6, 2026.
Mercedes-Benz GLS450 recalls (32)
Recall campaigns NHTSA lists for at least one GLS450 model year, newest first.
| Campaign | Filed | What | Model years | Repaired |
|---|---|---|---|---|
| 24V207000 | Mar 15, 2024 | Improperly Secured 48-Volt Ground Connection | 2019, 2020, 2021 | 84.2% |
| 24V118000 | Feb 16, 2024 | Transmission Control Unit Software May Cause Stall | 2020, 2021 | 79.8% |
| 23V445000 | Jun 26, 2023 | Loss of Drive Power from Fuel Pump Shutdown | 2021 | 92.2% |
| 23V177000 | Mar 17, 2023 | Water Intrusion from AC Drain Hose May Cause Short | 2020, 2021 | 88% |
| 22V732000 | Sep 30, 2022 | Seatback Lock Failure | 2020, 2021 | 81.1% |
| 22V680000 | Sep 12, 2022 | Rear Door Window Trim Bars May Detach | 2020, 2021 | 91.9% |
| 22V466000 | Jul 1, 2022 | Front Air Bag May Deploy Improperly/FMVSS 208 | 2020 | 93.8% |
| 22V365000 | May 20, 2022 | Disabled Emergency Call System | 2017–2021 | 90.6% |
| 22V231000 | Apr 8, 2022 | Unsecured Ground Connection Bolt | 2020, 2021 | 87.8% |
| 22V232000 | Apr 8, 2022 | Inoperable Rearview Camera Display/FMVSS 111 | 2020 | 92.4% |
| 21V961000 | Dec 13, 2021 | Fuel Leak Between Fuel Rail and Injectors | 2020 | 88.5% |
| 21V832000 | Oct 22, 2021 | Rear Window Glass May Detach | 2021 | 78.3% |
| 21V818000 | Oct 18, 2021 | Seats Assembled Incorrectly | 2020 | 96.3% |
| 21V354000 | May 14, 2021 | Rearview Camera Image May Not Display/FMVSS 111 | 2020, 2021 | 96.5% |
| 21V288000 | Apr 23, 2021 | Water Intrusion from AC Drain Hose May Cause Short | 2020 | 94.1% |
Only NHTSA and your automaker know whether your specific car was repaired. Open a model-year page for each campaign's official text, or check your VIN on NHTSA.
Check on NHTSA ↗Where to next
Mercedes-Benz GLS450 FAQ
How many recalls has the Mercedes-Benz GLS450 had?
NHTSA lists 32 recall campaigns that cover at least one Mercedes-Benz GLS450 model year from 2017 to 2021. Each campaign card on the model-year pages has NHTSA's official text and the repair completion rate. Only NHTSA's VIN lookup can tell you whether a specific car was repaired.
Which Mercedes-Benz GLS450 year has the most complaints?
Among the last 5 model years with settled counts, the 2020 drew the most owner complaints filed with NHTSA (36) and the 2018 the fewest (14). Counts are owner reports, not failure rates, and sales volume affects them.
What are the most common Mercedes-Benz GLS450 problems?
Across the 2017–2021 model years, owners most often name the electrical system, unknown or other, engine in complaints filed with NHTSA.
How this page was madeSources, processing, limits, review and changes
Data sources
- NHTSA recalls by vehicle
Retrieved Oct 6, 2026 - US DOT recall completion rates (data.transportation.gov)
Retrieved Oct 6, 2026 - NHTSA ODI owner complaints
Retrieved Oct 6, 2026 - NHTSA NCAP 5-Star Safety Ratings
Retrieved Oct 6, 2026 - EPA fuel economy data (licence confirmation pending)
Retrieved Oct 6, 2026 - EIA weekly retail gasoline prices
Weekly, all taxes included
Processing
- Complaints are counted per component. One complaint can list several, so component totals add up to more than the total.
- Fuel cost = miles per year ÷ EPA combined mpg × EIA weekly price for your region.
Limitations
- Complaint counts are owner reports, not verified findings or failure rates. There is no sales denominator.
- Recall campaigns are listed for the model year. Only NHTSA and the automaker know whether a specific car was repaired.
- Recent model years are still collecting reports.
Review
Data compiled automatically from the official files listed here.
Changelog
- 2026-10-06 Data refreshed from the official files.