AI-generated · grounded in NHTSA data
Reliability & 5-year cost of ownership — 2021 Toyota Sienna Hybrid
Overall rating NHTSA-grounded
Average
Estimated 5-year repair + maintenance cost: $3,500–$6,000
The 2021 Toyota Sienna Hybrid faces some reliability concerns mainly from recalls such as seat assembly errors and airbag sensor issues. Yet, the moderate complaint volume suggests average reliability overall in the segment.
Most-common failures
| Part | Typical mileage | Cost range | Frequency |
|---|---|---|---|
| airbags | 10,000–40,000 miles | $300–$600 | common |
| brakes | 20,000–50,000 miles | $250–$450 | common |
| visibility/wipers | 30,000–60,000 miles | $100–$200 | occasional |
Scheduled maintenance to budget
Routine items every owner should plan for.
- Oil and filter changes
- Brake fluid changes
- Tire rotations and balances
- Engine air filter replacements
- Cabin air filter replacements
- Hybrid system inspections
Warning signs to watch for
Symptoms that signal a major upcoming repair.
- Airbag warning lights
- Squealing brakes
- Wiper motor failures
Generated by gpt-4o on 8/24/2026. Cost ranges are conservative estimates that account for typical regional variation.