AI-generated · grounded in NHTSA data
Reliability & 5-year cost of ownership — 2003 Lexus Is
Overall rating NHTSA-grounded
Average
Estimated 5-year repair + maintenance cost: $4,000–$6,500
The 2003 Lexus IS has a moderate number of complaints, particularly regarding structure and airbags. Despite these issues, essential systems like the engine and brakes have relatively few complaints, indicating satisfactory reliability overall.
Most-common failures
| Part | Typical mileage | Cost range | Frequency |
|---|---|---|---|
| airbags | 70,000–100,000 miles | $300–$1,200 | common |
| structure | 60,000–90,000 miles | $500–$1,500 | common |
| engine | 80,000–120,000 miles | $400–$2,000 | occasional |
Scheduled maintenance to budget
Routine items every owner should plan for.
- oil and filter changes
- tire rotation and alignment
- replace brake pads and rotors
- coolant flush
- transmission fluid change
- spark plug replacement
Warning signs to watch for
Symptoms that signal a major upcoming repair.
- airbag warning light
- unusual engine noises
- difficulty steering
- brake warning light
- water leaks in cabin
Generated by gpt-4o on 8/23/2026. Cost ranges are conservative estimates that account for typical regional variation.