Reliability & 5-year cost of ownership — 2021 Toyota Sienna
NHTSA data on file today
try.vin couldn't confirm NHTSA's recall list for the 2021 Toyota Sienna, so this page doesn't state a recall count — check the VIN at nhtsa.gov/recalls for current campaigns. 165 owner complaints are on file.
Most-cited components in owner complaints
- Service Brakes 80 complaints
- Unknown or Other 27 complaints
- Seats 17 complaints
- Air Bags 16 complaints
- Electrical System 13 complaints
- Vehicle Speed Control 10 complaints
Of the 165 complaints on file, 14 report a crash and 3 a fire; across all 165 complaints, owners report 11 injuries (owner-reported, not verified by NHTSA).
Average
Estimated 5-year repair + maintenance cost: $5,000–$12,000AI estimate — not from NHTSA data
The 2021 Toyota Sienna has a moderate number of owner complaints, primarily about its service brakes. Other areas of concern include the seats, air bags, and the electrical system, but these have fewer complaints indicating less frequent issues. The lack of available recall data limits the overall assessment of its reliability.
Most-common failures
| Part | Typical mileage (AI estimate) | Cost range (AI estimate) | Frequency |
|---|---|---|---|
| Service brakes | Unknown | $300–$800 | common |
| Seats | Unknown | $150–$500 | occasional |
| Air bags | Unknown | $500–$1,200 | occasional |
AI estimate — not from NHTSA data: the mileage bands and repair-cost ranges above. Get a written repair quote before you budget.
Scheduled maintenance to budget
Routine items every owner should plan for.
- Oil and filter changes
- Brake inspections and pad replacements
- Tire rotations and replacements
- Transmission fluid changes
- Coolant system flush
- Battery inspections
- Air filter replacements
Warning signs to watch for
Symptoms that signal a major upcoming repair.
- Brake pedal feels soft
- Unresponsive air bags
- Electronic seat adjustment failure
- Warning lights on the dashboard
- Unusual engine noises
Generated by gpt-4o on from the NHTSA recall campaigns and owner-complaint counts on file for the 2021 Toyota Sienna at the time. The rating is an AI assessment; cost and mileage figures are AI estimates, not NHTSA data.