"How reliable is the 2017 Mercedes-Benz S550?"

"Based on 20 NHTSA complaints, the 2017 Mercedes-Benz S550 has a median complaint mileage of 30500 miles. The most common issue is STEERING."

"What are common problems with the 2017 Mercedes-Benz S550?"

"The most frequently reported component in NHTSA complaints for the 2017 Mercedes-Benz S550 is STEERING, accounting for a significant portion of the 20 total complaints filed."

2017 Mercedes-Benz S550: Reliability Data

Source: NHTSA — 20 complaints

Total Complaints

30,500mi

Median Mileage

STEERING

Top Issue

Crash Reports

When Do Complaints Happen?

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

1,050 25th Percentile

30,500 Median Mileage

47,500 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

STEERING

UNKNOWN OR OTHER

VISIBILITY/WIPER

AIR BAGS

VISIBILITY:WINDSHIELD

ELECTRICAL SYSTEM

STRUCTURE:BODY

STRUCTURE

VISIBILITY:SUN/MOON ROOF ASSEMBLY

SEAT BELTS

Severity Assessment

Crashes

Fires

Injuries

Deaths

Sample Complaint Reports

"TL* THE CONTACT OWNS A 2017 MERCEDES-BENZ S550. AFTER STARTING THE ENGINE, THE POWER STEERING FAILURE WARNING MESSAGE DISPLAYED AND THE POWER STEERING WAS INOPERABLE. THE STEERING WHEEL BECAME VERY DIFFICULT TO TURN. THE VEHICLE WAS TAKEN TO LOKEY MERCEDES-BENZ IN CLEARWATER, FLORIDA, BUT THE CAUSE ..."

"REAR WINDSHIELD, DRIVER SIDE WINDOW, FRONT WINDSHIELD, REAR RIGHT PASSENGER SIDE WINDOW HAVE LARGE AREAS (OVER 1 SQUARE FOOT) OF GLASS DISTORTION MADE IN THE FABRICATION OF THE GLASS. STATIC NON MOVING CAR SITUATION: WHEN THE CAR IS NOT MOVING IT LOOKS LIKE THE SHIMMERING EFFECT OF HOT AIR RISIN..."

"STARTING OUT FROM AN INTERSECTION THE ENTIRE ELECTRICAL SYSTEM DIED, NO ENGINE, NO LIGHTS, NO ABILITY TO OPEN TRUNK, NOTHING. I AM REPORTING THIS BECAUSE I FEAR SUCH AN EVENT COULD BE LIFE-THREATENING, EG. IF IT HAPPENED WHILE TRAVELING AT A HIGH SPEED. I BELIEVE THE AIRBAGS MAY HAVE BEEN DISABLED..."

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

When Were Complaints Filed?

Number of complaints by the year the issue occurred.

Where Are Complaints Coming From?

Top states by complaint count.

CA: 7 FL: 5 TN: 3 TX: 1 NJ: 1 IN: 1 MD: 1 KS: 1

Mercedes-Benz S550 — Other Years

See how this model compares across different model years.

Year	Complaints	Median Mileage	Top Issue	Crashes
2010	22	57,800	SUSPENSION	1
2014	36	16,000	UNKNOWN OR OTHER	7
2015	58	22,300	UNKNOWN OR OTHER	10

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