"How reliable is the 2003 Lexus Sc430?"

"Based on 29 NHTSA complaints, the 2003 Lexus Sc430 has a median complaint mileage of 39000 miles. The most common issue is AIR BAGS."

"What are common problems with the 2003 Lexus Sc430?"

"The most frequently reported component in NHTSA complaints for the 2003 Lexus Sc430 is AIR BAGS, accounting for a significant portion of the 29 total complaints filed."

2003 Lexus Sc430: Reliability Data

Source: NHTSA — 29 complaints

Total Complaints

39,000mi

Median Mileage

AIR BAGS

Top Issue

Crash Reports

When Do Complaints Happen?

Distribution of NHTSA complaints by vehicle mileage at time of report.

1,000 25th Percentile

39,000 Median Mileage

87,500 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

AIR BAGS

SERVICE BRAKES, HYDRAULIC

TIRES

STEERING

SUSPENSION

UNKNOWN OR OTHER

ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC)

WHEELS:RIM

ENGINE AND ENGINE COOLING

TIRES:PRESSURE MONITORING AND REGULATING SYSTEMS

Severity Assessment

Crashes

Fires

Injuries

Deaths

Sample Complaint Reports

"THE CAR VEERS VIOLENTLY TO THE LEFT OR TO THE RIGHT WHEN BRAKING ON A ROAD THAT IS NOT COMPLETELY SMOOTH. DEPENDING UPON THE UNEVENNESS IN THE ROAD, THE CAR WILL JERK THE STEERING WHEEL VIOLENTLY EITHER WAY. WE HAVE HAD THE CAR ACTUALLY CHANGE LANES WHEN BRAKING. LEXUS SAYS THAT THIS IS NORMAL AC..."

"WHEN DRIVING ON UNEVEN PAVEMENT STEERING WHEEL JERKS HARD TO THE LEFT AND RIGHT WHEN BRAKING, OCCASIONALLY CHANGING TO ANOTHER LANE. THE DEALER WAS CONTACTED. *AK *SC"

Source: NHTSA ODI Complaints Database. Names and identifying details omitted.

Data source: View this vehicle on NHTSA.gov | NHTSA ODI Complaints Database. Public domain.

Methodology: Complaint counts and mileage distributions are computed directly from consumer-reported NHTSA complaints. This data represents reported issues, not failure rates — vehicles without complaints are not represented. Full methodology.

Data through: 2026-03-28