AutoUtility currently tracks 5 official NHTSA owner defect complaints for the 2021 Mercedes-Benz G-Class. Electrical System issues are the most frequently reported category, appearing in 3 complaints (60% of submitted records). Among these NHTSA complaint records, 1 filing cites a crash, 1 cites a fire, 1 reports one or more injuries. The 2021 Mercedes-Benz G-Class belongs to the 2nd Generation (W463 2nd Gen) platform.
Factual proportion of owner complaints categorized by automotive subsystem in NHTSA records
3 owner complaints submitted to NHTSA ODI for this subsystem.
2 owner complaints submitted to NHTSA ODI for this subsystem.
2 owner complaints submitted to NHTSA ODI for this subsystem.
1 owner complaint submitted to NHTSA ODI for this subsystem.
Representative defect filings submitted by owners to the NHTSA Office of Defects Investigation
"Shortly after purchasing a new Mercedes Benz 2021 G550 on [XXX], the SUV started having electrical problems. During early 2022 the vehicle shut off while at a red light and would not restart until a few minutes later. No warning light or error message was seen and when taken to the dealership they..."
"The brakes locked up in the vehicle and computer system nearly causing deadly accident."
"Authorization failed Limited access is the reason there recalled I can't pair ⁶"
"Driving 2021 Mercedes-Benz G-550 for approximately 8min. Preceding East on a 3 lane South Florida Highway no more than 40 mph. Gas tank 75% full with V-Power From Shell. (filled-3 days prior). Proceeded from the middle lane to the right lane in-order to make a sharp right handed turn onto up coming..."
"While pulling away from a red light, the vehicle jolted a small amount, then it shut down, only providing power to the dashboard, which produced an array of safety warnings. Power steering and throttle were completely dead leaving me powerless in traffic. I pulled to the shoulder of the road,..."
Reported defect complaint volume across sibling model years (2015–2026)
| Model Year | NHTSA Complaints | Crash Reports | Safety Recalls | Detailed Report |
|---|---|---|---|---|
| 2015 Mercedes-Benz G-Class | 3 | 0 | 0 | View 2015 Problems → |
| 2016 Mercedes-Benz G-Class | 0 | 0 | 0 | View 2016 Problems → |
| 2017 Mercedes-Benz G-Class | 4 | 0 | 3 | View 2017 Problems → |
| 2018 Mercedes-Benz G-Class | 0 | 0 | 1 | View 2018 Problems → |
| 2019 Mercedes-Benz G-Class | 6 | 0 | 12 | View 2019 Problems → |
| 2020 Mercedes-Benz G-Class | 2 | 0 | 8 | View 2020 Problems → |
| 2021 Mercedes-Benz G-Class Current Page | 5 | 1 | 7 | Current |
| 2022 Mercedes-Benz G-Class | 4 | 0 | 3 | View 2022 Problems → |
| 2023 Mercedes-Benz G-Class | 6 | 0 | 3 | View 2023 Problems → |
| 2024 Mercedes-Benz G-Class | 0 | 0 | 0 | View 2024 Problems → |
| 2025 Mercedes-Benz G-Class | 0 | 0 | 2 | View 2025 Problems → |
| 2026 Mercedes-Benz G-Class | 0 | 0 | 0 | View 2026 Problems → |
Complete distribution of consumer defect reports across all 5 granular NHTSA system and subsystem classifications
| Vehicle Component / System | Total Complaints | Crash Reports | Fire Reports | Injury Entries | Fatality Entries |
|---|---|---|---|---|---|
| ELECTRICAL SYSTEM,ENGINE | 1 | 0 | 0 | 0 | 0 |
| ELECTRICAL SYSTEM,ENGINE,FUEL/PROPULSION SYSTEM | 1 | 0 | 0 | 0 | 0 |
| ELECTRICAL SYSTEM,VEHICLE SPEED CONTROL,ENGINE | 1 | 0 | 0 | 0 | 0 |
| Service Brakes NHTSA category: SERVICE BRAKES | 1 | 0 | 0 | 0 | 0 |
| SUSPENSION,FORWARD COLLISION AVOIDANCE | 1 | 1 | 1 | 15 | 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 2021 Mercedes-Benz G-Class
In official NHTSA consumer records, the most frequently cited issue area for the 2021 Mercedes-Benz G-Class is Electrical System, appearing in 3 records (60% of submitted filings).
Secondary reported categories include Engine & Cooling (2) and Driver Assistance & Safety Tech (2).
AutoUtility does not issue subjective reliability scores or commercial ratings. In official United States government records, NHTSA tracks 5 consumer defect complaints and 7 safety recall campaigns for the 2021 Mercedes-Benz G-Class.
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 2021 Mercedes-Benz G-Class, 1 filing cites a crash, 1 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.