AI-generated · grounded in NHTSA data
Reliability & 5-year cost of ownership — 2018 Lexus Is 300
Overall rating NHTSA-grounded
Above average
Estimated 5-year repair + maintenance cost: $6,000–$8,000
The 2018 Lexus IS 300 has limited owner complaints, mostly minor. No significant issues reported in key areas, indicating high reliability.
Most-common failures
| Part | Typical mileage | Cost range | Frequency |
|---|---|---|---|
| structure | 70,000–100,000 miles | $200–$500 | rare |
| fuel system | 60,000–90,000 miles | $300–$700 | rare |
| engine | 100,000–130,000 miles | $800–$1,500 | rare |
Scheduled maintenance to budget
Routine items every owner should plan for.
- Oil and filter changes
- Brake fluid replacement
- Cooling system flush
- Transmission fluid change
- Tire rotations and balancing
Warning signs to watch for
Symptoms that signal a major upcoming repair.
- Unusual engine noises
- Fuel odor inside cabin
- Delayed acceleration
- Hard shifts in transmission
Generated by gpt-4o on 8/23/2026. Cost ranges are conservative estimates that account for typical regional variation.