Mercedes-Benz Gls 450 Reliability by Year
Based on 2M+ real complaints filed with the U.S. National Highway Traffic Safety Administration (NHTSA)
153 NHTSA complaints (2018–2024).Complaint rate: 9.9 per 1,000 vehicles.
Should I buy a Mercedes-Benz Gls 450?
Quick answer from 153 NHTSA complaints · 2018–2024
Mercedes-Benz Gls 450 shows elevated crash or fire rates — buy with caution. 14.4% of reported complaints involved a crash — above the ~4% mainstream average. Most complaints relate to electrical faults. Inspect carefully or consider a different model in the same class.
- 2023 Mercedes-Benz Gls 450· 16 complaints
- 2018 Mercedes-Benz Gls 450· 20 complaints
- 2019 Mercedes-Benz Gls 450· 21 complaints
Keep scrolling for year-by-year complaint trends, recall campaigns, and component breakdowns — or click any year above for a full report.
Which Years to Buy & Avoid
Years auto-clustered by complaint volume relative to this model's median.
Rankings based on raw NHTSA complaint counts. Sales volume data not yet available for this model.
Bottom line: The 2020 Mercedes-Benz Gls 450 had a notable spike in NHTSA complaints. Other years had typical complaint volumes. Most common issue across all years: Electrical System.
Avoid These Years
Average
Better Years
No years stand out as significantly better.
Too New
Need 3+ years on the road for reliable complaint data.
A model's reputation is just the start.
Even within the “good” years, individual cars can have hidden accidents, title issues, or odometer rollbacks. Check the actual VIN before you buy — full history report for $4.99 (vs. Carfax $44.99).
Complaints by Model Year
NHTSA complaint count per model year
Common Mercedes-Benz Gls 450 Problems
Most reported component complaints to NHTSA. Bar length = volume; color = crash-involvement rate.
Show full table
| Component | Complaints | Crash % |
|---|---|---|
| Electrical Faults | 26 | 3.8% |
| Engine Problems | 18 | 5.6% |
| Forward Collision Avoidance: Automatic Emergency Braking | 11 | 36.4% |
| Brakes | 11 | 27.3% |
| Transmission / Drivetrain | 10 | 30.0% |
| Fuel System | 8 | 12.5% |
| Suspension Failures | 6 | 0.0% |
| Forward Collision Avoidance: Adaptive Cruise Control | 5 | 0.0% |
| Forward Collision Avoidance: Warnings | 5 | 20.0% |
| Wheel Issues | 4 | 25.0% |
When Each Problem Spiked
Year × component heatmap. Darker cells = more complaints that year. Reveals which model years a specific defect concentrated in — useful for spotting redesign-cycle quality dips.
Year-by-Year Breakdown
NHTSA complaint count per model year — click any year for full problems & recalls breakdown.
Year-by-Year Breakdown
Tap any year for full problems & recalls breakdown.
Data Sources & Methodology
Complaints: NHTSA Office of Defects Investigation consumer complaint database (153 records for this model). Public domain data, updated monthly.
Sales data: Not yet available for this model. Complaint counts are shown as raw numbers.
Rate calculation: Complaints per 10,000 vehicles sold = (complaint count / US annual sales) x 10,000. This normalizes for sales volume so high-volume models like Civic or Camry aren't unfairly penalized.
Year classifications: AVOID = 1.5x+ the model's median complaint count. GOOD = 0.6x or below. Years less than 3 years old are marked TOO NEW (insufficient data).
See also: Mercedes-Benz Gls 450accident & safety statistics from our vehicle history database.
Buying a Mercedes-Benz Gls 450?
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