2015 Mercedes-Benz S550: Reliability Data

Source: NHTSA — 58 complaints
58
Total Complaints
22,300mi
Median Mileage
UNKNOWN OR OTHER
Top Issue
10
Crash Reports

When Do Complaints Happen?

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

10,500 25th Percentile
22,300 Median Mileage
37,438 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

UNKNOWN OR OTHER
7
SEAT BELTS
6
STRUCTURE:BODY
5
WHEELS
4
ELECTRICAL SYSTEM
4
AIR BAGS
4
STEERING
3
ENGINE
3
VISIBILITY:SUN/MOON ROOF ASSEMBLY
2
FUEL/PROPULSION SYSTEM
2

Severity Assessment

10
Crashes
8
Fires
16
Injuries
0
Deaths

Sample Complaint Reports

"TL* THE CONTACT OWNS A 2015 MERCEDES BENZ S550. WHILE APPROACHING OTHER VEHICLES, THE DISTRONIC PLUS SYSTEM FAILED TO MEASURE THE CORRECT DISTANCE TO MAKE A STOP OR REDUCE SPEED. THE CONTACT INFORMED THE DEALER OF THE SAFETY CONCERN, BUT NO ACTION WAS TAKEN. THE CONTACT NOTIFIED THE MANUFACTURER OF ..."
"AT NIGHT THERE IS A DANGEROUS,VERY DISTRACTING REFLECTION IN THE WINDSHIELD. WHAT IS BEING REFLECTED UPWARD ARE THE LIGHTED DIGITAL TACHOMETER AND SPEEDOMETER. WHEN THE DRIVER IS DRIVING AT NIGHT IN HIS OR HERS FIELD OF VIEW ARE THE DASH GAUGES REFLECTED VIVIDLY IN THE WINDSHIELD GLASS. THIS C..."
"AT NIGHT THERE IS A DANGEROUS,VERY DISTRACTING REFLECTION IN THE WINDSHIELD. WHAT IS BEING REFLECTED UPWARD ARE THE LIGHTED DIGITAL TACHOMETER AND SPEEDOMETER. WHEN THE DRIVER IS DRIVING AT NIGHT IN HIS OR HERS FIELD OF VIEW ARE THE DASH GAUGES REFLECTED VIVIDLY IN THE WINDSHIELD GLASS. THIS C..."

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