Total Complaints
11 filings
MERCEDES-BENZ REDUNDANT S550E · model year
11 NHTSA complaints, 2 crash reports for this specific cohort.
NHTSA overall rating
Not crash-tested
New Car Assessment Program
The 2015MERCEDES-BENZREDUNDANT S550E carries 11 consumer safety complaints in NHTSA's Office of Defects Investigation database for this specific model-year cohort. Within that volume, owners reported 2 crashes, 0 fires, 0 injuries, and 0 fatalities. No NCAP 5-star crash-test rating is available for this model year in the federal database.
Component-level analysis is where model-year complaints become actionable: the top complaint category for the 2015 REDUNDANT S550E is unknown or other with 3 filings, followed by electrical system (2) and fuel/propulsion system (2). Concentration in one or two component groups is the classic signature of a systemic defect; a flat distribution usually reflects normal aging, warranty complaints, or isolated build-plant variability.
NHTSA currently has 15 investigation files overlapping the 2015 REDUNDANT S550E. Owners comparing this cohort against neighboring years should pair the counters above with the complaint-by-year trend on the parent model page — a spike in a single year often tracks to a platform refresh, a new transmission supplier, or an updated ECU calibration. Use the related-complaint feed below to read raw owner narratives before deciding whether any pattern here affects your specific use case.
Total Complaints
11 filings
Crashes Reported
2 reports
Source
NHTSA ODI
Federal complaints database
At or below the fleet median complaint volume.
| Component | Count |
|---|---|
| UNKNOWN OR OTHER | 3 |
| ELECTRICAL SYSTEM | 2 |
| FUEL/PROPULSION SYSTEM | 2 |
| ELECTRONIC STABILITY CONTROL (ESC) | 1 |
| SERVICE BRAKES, HYDRAULIC | 1 |
| TIRES | 1 |
| STEERING | 1 |
The contact owns a 2009 Mercedes-Benz S550. The contact stated that while driving at an undisclosed speed with the air condition system activated, there was hot air blowing out of the vents. The contact stated that the hot air was blowing out of the vents and the floorboard was soiled with water. The vehicle was taken to an independent mechanic to be diagnosed. The contact was informed that the compressor and the motherboard needed to be replaced. The vehicle was repaired; however, the failure recurred. The vehicle was taken back to the independent mechanic. The vehicle was diagnosed with electrical wiring failure. The electrical wiring underneath the driver and passenger seats was burned. The vehicle was not repaired. The manufacturer was made aware of the failure but provided no assistance. The contact was advised to contact the NHTSA Hotline. The failure mileage was approximately 73,000. The VIN was unavailable
Mileage: 73,000
I PURCHASED A LAVISH S550 AND OVER TIME I STARTED SMELLING GAS IN THE CABIN. I DIDN'T THINK TOO MUCH ABOUT IT UNTIL THE SMELL BECAME MORE PUNGENT. I GO ONLINE TO DO SOME RESEARCH AND FIND OUT SOME OF THE CARS HAD FAULTY FUEL PUMPS WHICH LEAK INTO THE BACKSEAT. NOT ONLY DOES IT LEAK BUT THE VAPORS ARE SPREAD THROUGHOUT THE CABIN MAKING IT UNBEARABLE TO BREATH. I TOOK THE CAR IN TO MERCEDES AND THEY DON'T WANNA OWN UP TO THERE FAULTY EQUIPMENT. WITH THE TEMPERATURE BEING EXTREMELY HOT I WOULD THINK MY CAR WOULD BLOW UP BECAUSE IT IS A BLACK CAR. ANY HELP WITH THIS MATTER IS APPRECIATED. MERCEDES OF SOUTH ATLANTA (SERVICE ADVISOR-TUTT) INFORMED ME TO PAY $2100 TO FIX. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).' *PM
Mileage: 164,000
ON 8/29/17 AROUND 11:20 - 11:30AM, I WAS DRIVING ON N270 JUST OFF FROM HOV LANE FROM S495 NEAR MONTROSE EXIT(LITTLE BIT BEFORE), SOME METALLIC ROUND WHEEL TYPE WITH SHARP EDGES AROUND FLEW OVER FROM S270. I TRIED TO AVOID IT BY SWERVE MY CAR BUT IT MUST HAVE LANDED BELOW MY CAR AND SCRATCHED UNDERNEATH WHICH CAUSED MY CAR MAKING WEIRD SOUND PLUS BURNING GASOLINE SMELL. I DIDN'T SEE MY TIRE PRESSURE GAZE CHANGE SO I WENT INTO LOCAL LANE FROM FALLS ROAD TO GET TO MY HOME. MY CAR WAS NOT STEERING PROPERLY AND I CAN SMELL GASOLINE EVEN FROM CLOSED WINDOWS. AFTER PARKING MY CAR, I SAW GASOLINE LEAKAGE FROM UNDERNEATH MY CAR. IT WAS SUCH SCARY INCIDENT AND I WAS SO LUCKY TO BE ALIVE AND NOT HURT WITH GASOLINE LEAKING FROM MY CAR.
Mileage: 40,000
ON 8/29/17 AROUND 11:20 - 11:30AM, I WAS DRIVING ON N270 JUST OFF FROM HOV LANE FROM S495 NEAR MONTROSE EXIT(LITTLE BIT BEFORE), SOME METALLIC ROUND WHEEL TYPE WITH SHARP EDGES AROUND FLEW OVER FROM S270. I TRIED TO AVOID IT BY SWERVE MY CAR BUT IT MUST HAVE LANDED BELOW MY CAR AND SCRATCHED UNDERNEATH WHICH CAUSED MY CAR MAKING WEIRD SOUND PLUS BURNING GASOLINE SMELL. I DIDN'T SEE MY TIRE PRESSURE GAZE CHANGE SO I WENT INTO LOCAL LANE FROM FALLS ROAD TO GET TO MY HOME. MY CAR WAS NOT STEERING PROPERLY AND I CAN SMELL GASOLINE EVEN FROM CLOSED WINDOWS. AFTER PARKING MY CAR, I SAW GASOLINE LEAKAGE FROM UNDERNEATH MY CAR. IT WAS SUCH SCARY INCIDENT AND I WAS SO LUCKY TO BE ALIVE AND NOT HURT WITH GASOLINE LEAKING FROM MY CAR.
Mileage: 40,000
VEHICLE FAILS TO GO IN PARK AFTER DRIVING ON THE STREET AND ARRIVING AT THE GROCERY STORE.
VEHICLE FAILS TO GO IN PARK AFTER DRIVING ON THE STREET AND ARRIVING AT THE GROCERY STORE.
VEHICLE FAILS TO GO IN PARK AFTER DRIVING ON THE STREET AND ARRIVING AT THE GROCERY STORE.
MY S550E TRUNK CAN REMAIN UNLOCKED AND SOMETIMES REFUSE TO LOCK - RESULTING IN COMPROMISING THE SECURITY OF THE VEHICLE. THERE IS SOMETHING WRONG IN THE STATE MACHINE TO LOCK THE TRUNK. IF THE VEHICLE IS IN A LOCKED STATE AND THE REMOTE IS USED TO LOCK THE TRUCK - IT FAILS TO DO SO.
REPLACED ALL TIRES WHEN ALL HAD SEVERE TREAD WEAR AND TWO HAD SIDE WALL BLISTERS AT 23,000 MILES. I RECEIVED AN ADJUSTMENT FOR THE REPLACEMENT. WITH ABOUT 1,000 MILES ON THE NEW TIRES THE PASSENGER FRONT TIRE DEVELOPED A LARGE SIDEWALL BLISTER. *JS
I WAS ON A SNOW COVERED ROAD IN MY NEIGHBORHOOD DRIVING ABOUT 10-15 MPH AND ATTEMPTED TO MAKE A RIGHT TURN. THE CAR KEPT GOING STRAIGHT AND SLID OFF THE ROAD. THE ESP STABILITY CONTROL AND ABS FAILED TO OPERATE AT THAT POINT. THIS WAS AFTER A RECENT REPROGRAMMING BY THE DEALER. THIS FUNCTION HAD OPERATED CORRECTLY ALL WINTER PRIOR TO THAT EVENT. THE ESP LIGHT DID NOT FLASH LIKE IT NORMALLY DOES IN THAT SITUATION. THERE COULD HAVE BEEN A CAR COMING THE OTHER WAY AND I WOULD HAVE HIT THEM DUE TO THIS FAILURE. NO ERROR LIGHTS WERE DISPLAYED BY THE CAR. THE CAR GOT HUNG UP ON A BIG ROCK THAT WAS IN SOMEONE'S YARD AS A RESULT OF THE INCIDENT. I DID NOT REPORT TO THE POLICE SINCE IT WAS JUST ME AND NO APPARENT DAMAGE TO THE YARD, ONLY TO MY CAR UNDERNEATH. *TR
Mileage: 19,800
I WAS ON A SNOW COVERED ROAD IN MY NEIGHBORHOOD DRIVING ABOUT 10-15 MPH AND ATTEMPTED TO MAKE A RIGHT TURN. THE CAR KEPT GOING STRAIGHT AND SLID OFF THE ROAD. THE ESP STABILITY CONTROL AND ABS FAILED TO OPERATE AT THAT POINT. THIS WAS AFTER A RECENT REPROGRAMMING BY THE DEALER. THIS FUNCTION HAD OPERATED CORRECTLY ALL WINTER PRIOR TO THAT EVENT. THE ESP LIGHT DID NOT FLASH LIKE IT NORMALLY DOES IN THAT SITUATION. THERE COULD HAVE BEEN A CAR COMING THE OTHER WAY AND I WOULD HAVE HIT THEM DUE TO THIS FAILURE. NO ERROR LIGHTS WERE DISPLAYED BY THE CAR. THE CAR GOT HUNG UP ON A BIG ROCK THAT WAS IN SOMEONE'S YARD AS A RESULT OF THE INCIDENT. I DID NOT REPORT TO THE POLICE SINCE IT WAS JUST ME AND NO APPARENT DAMAGE TO THE YARD, ONLY TO MY CAR UNDERNEATH. *TR
Mileage: 19,800
Data as of 2025. Sources: NHTSA Office of Defects Investigation (ODI) complaints database, NHTSA recall campaign API, NHTSA NCAP crash-test ratings, and NHTSA FARS for fatality cross-reference.
Read our methodology — how this data is sourced, computed, and verified.