AI-generated · grounded in NHTSA data
Reliability & 5-year cost of ownership — 2018 Infiniti Q50
Overall rating NHTSA-grounded
Below average
Estimated 5-year repair + maintenance cost: $8,500–$12,000
The 2018 Infiniti Q50 has a below-average reliability rating due to recurring issues with the engine and drive system. Recalls related to the driveshaft, camera system, and fuel pump affect drivability, highlighting potential safety concerns and repair costs.
Most-common failures
| Part | Typical mileage | Cost range | Frequency |
|---|---|---|---|
| engine | 50,000–80,000 miles | $1,500–$4,000 | very common |
| fuel pump | 40,000–70,000 miles | $500–$900 | common |
| driveshaft | 60,000–90,000 miles | $700–$1,300 | common |
Scheduled maintenance to budget
Routine items every owner should plan for.
- Oil change every 5,000 miles
- Brake pad replacement every 40,000 miles
- Coolant flush every 60,000 miles
- Transmission fluid change every 60,000 miles
- Timing chain tension check
- Spark plug replacement at 60,000 miles
Warning signs to watch for
Symptoms that signal a major upcoming repair.
- Engine stalling while driving
- Unusual noises from driveshaft
- Fuel level inconsistencies
- Check engine light illuminations
Generated by gpt-4o on 6/14/2026. Cost ranges are conservative estimates that account for typical regional variation.