AI-generated · grounded in NHTSA data
Reliability & 5-year cost of ownership — 2001 Infiniti G20
Overall rating NHTSA-grounded
Average
Estimated 5-year repair + maintenance cost: $5,500–$8,000
The 2001 Infiniti G20 displays an average reliability profile, with relatively low incidence of severe issues. The most noted areas for concern include the engine and braking systems, but these are not widespread.
Most-common failures
| Part | Typical mileage | Cost range | Frequency |
|---|---|---|---|
| engine | 100,000–150,000 miles | $800–$1,500 | common |
| brakes | 70,000–120,000 miles | $200–$500 | occasional |
| transmission | 90,000–140,000 miles | $1,200–$2,500 | rare |
Scheduled maintenance to budget
Routine items every owner should plan for.
- oil change every 5,000 miles
- brake fluid replacement every 20,000 miles
- coolant replacement every 30,000 miles
- transmission fluid change every 40,000 miles
Warning signs to watch for
Symptoms that signal a major upcoming repair.
- engine overheating
- brake pedal softness
- transmission slipping
- strange engine noises
- reduced braking efficiency
Generated by gpt-4o on 8/20/2026. Cost ranges are conservative estimates that account for typical regional variation.