2025 Infiniti Q50 Pre-Purchase Inspection Checklist
Known Issues — 2025 Infiniti Q50
MODERATE
3.0T timing chain tensioner wear persists as known issue on V37 platform
MODERATE
Carbon buildup on 3.0T direct-injection intake valves
MODERATE
Oil consumption on 3.0T
MINOR
Platform aging — infotainment still lacks wireless connectivity on some trims
What to Inspect
- 3.0T cold start timing chain rattle
- Oil consumption check
- Intake valve carbon
- Infotainment and connectivity features test
- All ADAS and safety systems
- Verify full Infiniti warranty
Expected Maintenance Costs
| Service | Interval | Cost |
|---|---|---|
| Engine oil service | every 5,000-7,500 miles | $70-$120 |
| Major service (plugs, filters, fluids) | every 30,000 miles | $400-$700 |
| Timing chain service if rattling (3.0T) | as needed | $1,500-$3,500 |
| Transmission fluid | every 60,000 miles | $150-$280 |
| Brake pad/rotor replacement | every 25,000-45,000 miles | $350-$650 |
| Intake valve cleaning | every 40,000-60,000 miles | $400-$700 |
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