2004 Mercedes Benz S430: Reliability Data
When Do Complaints Happen?
Distribution of NHTSA complaints by vehicle mileage at time of report.
What Fails?
Most reported component issues from NHTSA complaints.
Severity Assessment
Sample Complaint Reports
"TL*THE CONTACT OWNS A 2004 MERCEDES BENZ S430. THE DEALER STATED THAT RAIN WATER HAS BEEN LEAKING INTO THE FRONT OF THE VEHICLE, WHICH CAUSED ELECTRICAL AND COMPUTER FAILURES. A LEAK IS PRESENT UNDERNEATH THE HOOD AND WATER IS ACCUMULATING NEAR THE FLOOR MAT. THE DEALER AND MANUFACTURER STATED TH..."
"THE OUTSIDE RIGHT HAND MIRROR HAS DISCOLORED MAKING IT DIFFICULT TO SEE TO CARS IN BACK. *TR"
"TRANSMISSION VALVE BODY NEED REPLACEMENT AFTER ENTIRE TRANSMISSION WAS REPLACED @ 50,000 MILES. *TR"
Source: NHTSA ODI Complaints Database. Names and identifying details omitted.
When Were Complaints Filed?
Number of complaints by the year the issue occurred.
When Does Each Component Fail?
Median mileage at complaint for top components.
Where Are Complaints Coming From?
Top states by complaint count.
Mercedes Benz S430 — Other Years
See how this model compares across different model years.
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
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