Reliability & 5-year cost of ownership — 2021 Proterra Catalyst
NHTSA data on file today
The 2021 Proterra Catalyst has 5 NHTSA recall campaigns and 1 owner complaint on file as of . Recall data is refreshed daily from NHTSA.
Recall campaigns on file
- NHTSA #24V655000 Radiator Fan Electrical Circuit May Overheat NHTSA notice
- NHTSA #23V697000 Inverter May Fail Causing Loss of Power NHTSA notice
- NHTSA #23V078000 Windshield Wiper Motor May Fail NHTSA notice
- NHTSA #22V855000 Parking Brake Can Unintentionally Engage NHTSA notice
- NHTSA #22V114000 Steering Gearbox May Loosen NHTSA notice
Most-cited components in owner complaints
- Electrical System 1 complaint
Average
Estimated 5-year repair + maintenance cost: $15,000–$25,000AI estimate — not from NHTSA data
The 2021 Proterra CATALYST shows an average reliability with issues primarily in the electrical system and components affecting steering and parking brakes. Recalls and minimal owner complaints suggest adequate manufacturer support but potential repair needs.
Most-common failures
| Part | Typical mileage (AI estimate) | Cost range (AI estimate) | Frequency |
|---|---|---|---|
| electrical system | 30,000–60,000 miles | $800–$1,500 | common |
| windshield wiper motor | 20,000–40,000 miles | $200–$450 | occasional |
| parking brake system | 50,000–80,000 miles | $300–$700 | 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.
- Annual battery check
- Bi-annual brake inspection
- Coolant system flush every 4 years
- Tire rotation every 10,000 miles
- Cabin air filter replacement annually
Warning signs to watch for
Symptoms that signal a major upcoming repair.
- Overheating electrical circuits
- Unexpected parking brake engagement
- Intermittent or non-working windshield wipers
Generated by gpt-4o on from the NHTSA recall campaigns and owner-complaint counts on file for the 2021 Proterra Catalyst at the time. The rating is an AI assessment; cost and mileage figures are AI estimates, not NHTSA data.