Reliability & 5-year cost of ownership — 2021 Thor Motor Coach Four Winds
NHTSA data on file today
The 2021 Thor Motor Coach Four Winds has 9 NHTSA recall campaigns and 2 owner complaints on file as of . Recall data is refreshed daily from NHTSA.
Recall campaigns on file
- NHTSA #20V718000 Cook Stove Saddle Valves may Leak Gas NHTSA notice
- NHTSA #20V711000 BIM/BIR Is Not Watertight NHTSA notice
- NHTSA #20V458000 Incorrect Diameter Bolts Installed/FMVSS 207, 210 NHTSA notice
- NHTSA #20V444000 Front Seat Wiring Harnesses Routed Incorrectly NHTSA notice
- NHTSA #20V423000 Converter Breaker May Cause Fire NHTSA notice
- NHTSA #20V419000 Loose Battery Cables May Cause Fire NHTSA notice
- NHTSA #20V339000 Frameless Window Glass Panels May Detach NHTSA notice
- NHTSA #20V303000 Wire Harness May Chafe and Damage Circuits NHTSA notice
- NHTSA #20V178000 Driveshaft May Separate From Rear Axle NHTSA notice
Most-cited components in owner complaints
- Equipment 1 complaint
- Steering 1 complaint
- Structure 1 complaint
- Vehicle Speed Control 1 complaint
Below average
Estimated 5-year repair + maintenance cost: $4,000–$8,000AI estimate — not from NHTSA data
The 2021 Thor Motor Coach Four Winds has multiple recalls, including gas leaks and structural issues, indicating possible reliability problems. Owner complaints are sparse but notable, highlighting concerns in critical components like steering and vehicle speed control.
Most-common failures
| Part | Typical mileage (AI estimate) | Cost range (AI estimate) | Frequency |
|---|---|---|---|
| stove | 10,000–30,000 miles | $100–$300 | very common |
| battery cables | 20,000–40,000 miles | $200–$500 | common |
| differential | 30,000–50,000 miles | $800–$1,500 | 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.
- Change engine oil regularly
- Inspect and inflate tires
- Check brake system annually
- Replace air filters regularly
- Inspect electrical wiring
- Examine battery health regularly
Warning signs to watch for
Symptoms that signal a major upcoming repair.
- Unusual engine noises
- Electrical system failures
- Inoperative vehicle speed control
- Persistent gas smell
- Difficulty steering
Generated by gpt-4o on from the NHTSA recall campaigns and owner-complaint counts on file for the 2021 Thor Motor Coach Four Winds at the time. The rating is an AI assessment; cost and mileage figures are AI estimates, not NHTSA data.