2014 Mercedes-Benz S550: Reliability Data

Source: NHTSA — 36 complaints
36
Total Complaints
16,000mi
Median Mileage
UNKNOWN OR OTHER
Top Issue
7
Crash Reports

When Do Complaints Happen?

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

2,200 25th Percentile
16,000 Median Mileage
50,000 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

UNKNOWN OR OTHER
4
STEERING
3
SERVICE BRAKES
2
FUEL/PROPULSION SYSTEM
2
AIR BAGS
2
POWER TRAIN
2
SEAT BELTS
2
VISIBILITY/WIPER
2
STRUCTURE:BODY
1
EQUIPMENT ADAPTIVE/MOBILITY
1

Severity Assessment

7
Crashes
0
Fires
4
Injuries
0
Deaths

Sample Complaint Reports

"I PURCHASED A NEW 2014 MERCEDES S550 AND THE DAY AFTER PURCHASE, THE AIRBAG MALFUNCTION LIGHT CAME ON. I SET UP AN APPOINTMENT TO HAVE THIS CORRECTED, AND WAS TOLD IT WAS FIXED. A COUPLE OF WEEKS LATER, I WAS TRAVELING AT APPROXIMATELY 20MPH, APPROACHING AN INTERSECTION WHERE I DID NOT HAVE A STOP..."
"I PURCHASED A NEW 2014 MERCEDES S550 AND THE DAY AFTER PURCHASE, THE AIRBAG MALFUNCTION LIGHT CAME ON. I SET UP AN APPOINTMENT TO HAVE THIS CORRECTED, AND WAS TOLD IT WAS FIXED. A COUPLE OF WEEKS LATER, I WAS TRAVELING AT APPROXIMATELY 20MPH, APPROACHING AN INTERSECTION WHERE I DID NOT HAVE A STOP..."
"I PURCHASED A NEW 2014 MERCEDES S550 AND THE DAY AFTER PURCHASE, THE AIRBAG MALFUNCTION LIGHT CAME ON. I SET UP AN APPOINTMENT TO HAVE THIS CORRECTED, AND WAS TOLD IT WAS FIXED. A COUPLE OF WEEKS LATER, I WAS TRAVELING AT APPROXIMATELY 20MPH, APPROACHING AN INTERSECTION WHERE I DID NOT HAVE A STOP..."

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