2015 Mercedes-Benz S550 problems and owner complaints
Explore the records behind recurring owner reports.
Key facts
41 owner complaints analyzed
5 distinct recall campaigns
22,300 mi median reported failure mileage
Scope: 2015 model year. Data snapshot: . 17 complaints include usable failure mileage.
Most common problems
Unknown Or Other is the most frequently named component, appearing in 7 of 41 complaints (17.1%). A complaint can name multiple components.
| Topic | Matching reports | Share of complaints |
|---|---|---|
| Steering behavior | 6 | 14.6% |
| Braking behavior | 4 | 9.8% |
| Electrical and battery issues | 2 | 4.9% |
| Fuel system concerns | 1 | 2.4% |
Topic matches use published keyword rules. They describe mentions, including negations or comparisons, and do not confirm a diagnosis. Read the matching rules.
Component breakdown
Number of unique complaints naming each component. Top eight shown.
| Category | Count |
|---|---|
| Unknown Or Other | 7 |
| Seat Belts | 6 |
| Structure:Body | 5 |
| Air Bags | 4 |
| Electrical System | 4 |
| Wheels | 4 |
| Engine | 3 |
| Steering | 3 |
Unknown Or Other: 7; Seat Belts: 6; Structure:Body: 5; Air Bags: 4; Electrical System: 4; Wheels: 4; Engine: 3; Steering: 3
Reported problems by failure mileage
Complaint counts in mileage bands. These are not failure rates per vehicle or mile.
| Category | Count |
|---|---|
| Under 25,000 | 11 |
| 25,000 to 49,999 | 3 |
| 50,000 to 74,999 | 0 |
| 75,000 to 99,999 | 1 |
| 100,000 to 149,999 | 1 |
| 150,000 and above | 1 |
Under 25,000: 11; 25,000 to 49,999: 3; 50,000 to 74,999: 0; 75,000 to 99,999: 1; 100,000 to 149,999: 1; 150,000 and above: 1
Under 25,000 miles has the most reports with usable mileage (11). 24 complaints have missing, zero or invalid mileage.
Complaints over time
Year the complaint was filed, not the vehicle model year or incident year. The snapshot year is partial.
| Category | Count |
|---|---|
| 2014 | 2 |
| 2015 | 2 |
| 2016 | 1 |
| 2017 | 2 |
| 2018 | 3 |
| 2019 | 2 |
| 2020 | 4 |
| 2021 | 2 |
| 2022 | 2 |
| 2023 | 7 |
| 2024 | 6 |
| 2025 | 7 |
| 2026 | 1 |
2014: 2; 2015: 2; 2016: 1; 2017: 2; 2018: 3; 2019: 2; 2020: 4; 2021: 2; 2022: 2; 2023: 7; 2024: 6; 2025: 7; 2026: 1
Pattern summary
Unknown Or Other leads the component reports. Steering behavior appears in 6 complaint narratives. Braking behavior appears in 4 complaint narratives. Electrical and battery issues appears in 2 complaint narratives. Use these patterns to inspect individual reports and prepare questions for a mechanic.
Calculated from recorded counts. An AI narrative has not been published for this selection.
Complaint evidence
Examples provide context, not a representative sample or a verified diagnosis.
Owner report 11320997 · 2020-04-13 (April 13, 2020)
TL* THE CONTACT OWNS A 2015 MERCEDES-BENZ S550. THE CONTACT STATED WHILE DRIVING 40 MPH, HE STARTED TO SMELL BURNING BRAKE PAD ODOR INSIDE OF THE CAB OF THE VEHICLE. THE CONTACT STATED THE PARK BRAKE MALFUNCTION WARNING MESSAGE WAS ILLUMINATED. THE CONTACT WAS ABLE TO PARK AT A NEAR CAR WASH PARKING LOT AND WHEN EXITING THE VEHICLE, HE SAW SMOKE AND FIRE NEAR THE REAR DRIVER CALIPER. THE CONTACT STATED AN EMPLOYEE FROM THE CAR WASH WAS ABLE TO EXTINGUISH THE FIRE. THE FIRE OR POLICE DEPARTMENT WAS NOT NOTIFIED. THE CONTACT STATED NO ONE WAS INJ…
Owner-reported narrative. 24,387 miles reported. Look up ODI 11320997 at NHTSA ↗
Owner report 11327375 · 2020-06-05 (June 5, 2020)
THE STEERING COLUMN WENT BAD. IT STARTED MAKING NOISE, BUT NOT WARNING LIGHTS CAME ON. IF I HAD CONTINUED TO DRIVE IT, IT PROBABLY WOULD HAVE CRASHED. THE CAR ONLY HAD APPROXIMATELY 22,000 MILES ON IT. *TR
Owner-reported narrative. 22,000 miles reported. Look up ODI 11327375 at NHTSA ↗
Owner report 10693683 · 2015-03-11 (March 11, 2015)
NEW VEHICLE (FROM MERCEDES OF ENCINO) WAS BEING DRIVEN IN A TEST DRIVE. EB ON BURBANK BL-SPEED LIMIT 50MPH--IN CENTER LANE OF 3 EB- MBZ SALESMAN REACHED ACROSS DRIVER AND SET CRUISE AT 40MPH AND ENCOURAGED DRIVER TO TEST THE COLLISION PREVENTION SYSTEM---TRAFFIC AHEAD WAS STOPPED AT LIGHT---SALESMAN CONTINUED TO TELL DRIVER TO NOT APPLY BRAKES--DRIVER DID NOT APPLY BRAKES---COLLISION AVOIDANCE SYSTEM FAILED--SEAT BELT TENSIONERS FAILED---AIR BAGS DID NOT DEPLOY WHEN S550 COLLIDED WITH REAR OF STOPPED VEHICLE (ECLASS MBZ) AT APPROX 40MPH. BACK …
Owner-reported narrative. Look up ODI 10693683 at NHTSA ↗
Owner report 10849533 · 2018-03-28 (March 28, 2018)
2015 MERCEDES BENZ S-550. CONSUMER WRITES IN REGARDS TO VEHICLE SECURITY SYSTEMS MECHANICAL AND ELECTRICAL FAILURE ACCIDENT. *SMD *TR
Owner-reported narrative. Look up ODI 10849533 at NHTSA ↗
Owner report 11665098 · 2025-06-05 (June 5, 2025)
The contact owns a 2015 Mercedes-Benz S550. The contact stated that while operating the vehicle, the air bag warning light remained illuminated, with the message "Front Drivers Air Bag Malfunction - Service Required" displayed. The cause of the failure was not yet determined. The manufacturer and local dealer were notified of the failure, but no assistance was provided. The contact was informed that the VIN was not included in NHTSA Campaign Number: 17V177000 (ELECTRICAL SYSTEM, AIR BAGS). The contact stated that the vehicle had experienced the…
Owner-reported narrative. 10,000 miles reported. Look up ODI 11665098 at NHTSA ↗
Owner report 11556933 · 2023-11-27 (November 27, 2023)
I bought my S-class car at a Manhattan dealership with 4900 miles on it, I treated it like my baby I’m the only driver and all services and maintenance had been done at the dealership, and I started getting bad readings on the fuel, check engine is ON, fuel gauge reads Full then goes down to Empty The mechanics at the Manhattan dealership said it was short on the fuel tank and I need to have the whole new tank replaced, my understanding is this model, the S Class has been having this issue on many models and there was a soft recall on that mat…
Owner-reported narrative. Look up ODI 11556933 at NHTSA ↗