2009 Mercedes Benz Sl550: Reliability Data

Source: NHTSA — 20 complaints
20
Total Complaints
7,500mi
Median Mileage
SERVICE BRAKES
Top Issue
0
Crash Reports

When Do Complaints Happen?

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

7,500 25th Percentile
7,500 Median Mileage
13,892 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

SERVICE BRAKES
5
TIRES
4
WHEELS
4
ELECTRICAL SYSTEM
3
SERVICE BRAKES, HYDRAULIC
1
TIRES:PRESSURE MONITORING AND REGULATING SYSTEMS
1
STRUCTURE
1
STRUCTURE:BODY
1

Severity Assessment

0
Crashes
1
Fires
0
Injuries
0
Deaths

Sample Complaint Reports

"I HAVE OWNED THIS VEHICLE SINCE MARCH 2009 AND HAVE HAD TO REPLACE 11 TIRES AND 2 WHEELS AND HAVE HAD 3 WHEELS REPAIRED. THIS IS DUE TO LOW PROFILE TIRES WHICH DEVELOP BULGES. *TR"
"UNKNOWN CAUSE, CRACKED AND BENT WHEEL RIMS, REPLACED WITH NEW. *TR"
"UNKNOWN CAUSE, CRACKED AND BENT WHEEL RIMS, REPLACED WITH NEW. *TR"

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