AI-generated · grounded in NHTSA data
Reliability & 5-year cost of ownership — 2021 Mazda Cx-30
Overall rating NHTSA-grounded
Average
Estimated 5-year repair + maintenance cost: $4,500–$7,500
The 2021 Mazda CX-30 has an average reliability rating. Notable issues include engine and electrical system complaints. While there are tire valve and liftgate recalls, no severe safety concerns are prevalent.
Most-common failures
| Part | Typical mileage | Cost range | Frequency |
|---|---|---|---|
| engine | 15,000–40,000 miles | $1,500–$3,000 | common |
| electrical system | 10,000–30,000 miles | $200–$1,200 | common |
| forward collision system | 20,000–50,000 miles | $200–$1,000 | occasional |
Scheduled maintenance to budget
Routine items every owner should plan for.
- Oil and filter changes
- Brake pad and rotor inspection
- Transmission fluid change
- Coolant replacement
- Tire rotation and balance
Warning signs to watch for
Symptoms that signal a major upcoming repair.
- Engine knocking sounds
- Sudden electric failures
- Forward collision alerts
- Uneven tire wear
Generated by gpt-4o on 8/24/2026. Cost ranges are conservative estimates that account for typical regional variation.