WHILE DRIVING AT 50MPH, AUDIBLE AND VISUAL WARNINGS OF BRAKE FAILURE. NO BRAKING AVAILABLE OTHER THAN TRANSMISSION DOWNSHIFT FOR ENGINE BRAKING.
2008 Mercedes Benz SL550
Owner reports · Recalls · Investigations
Limited comparison data
There is not enough comparable history to draw a useful model-year comparison.
Counts are not adjusted for sales, age, mileage exposure or reporting. A lower count does not establish that a car is problem-free.
About this comparison →Model-year median: 9.5
0Recall campaignsView recall details →
0InvestigationsView investigation details →
Check a VIN with NHTSA ↗ Model-level counts do not show whether a particular VIN is affected or repaired.
Inspection summary
2008 Mercedes Benz SL550
NHTSA snapshot: September 18, 2026. 4 owner complaints · 0 recall campaigns · 0 investigations.
Counts are not failure probabilities and are not adjusted for sales, age, mileage exposure or reporting. One report may name several categories. Comparison method and limitations.
Top reported categories (up to 5)
- Engine And Engine Cooling: 1 reports
- Seats: 1 reports
- Service Brakes: 1 reports
- Service Brakes, Hydraulic: 1 reports
- Steering: 1 reports
Full reported-category list and vehicle report
Recall links
No recall campaigns in this snapshot.
Check a VIN with NHTSA. Model-level history does not establish whether a particular VIN is affected or repaired.
Print the top reported categories, recall links, snapshot date and comparison limits.
How this year compares
Owner complaints by model year
Compare all SL550 years →Counts vary with age, sales, mileage exposure and reporting. They are not failure rates.
What owners reported most
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
Limited mileage data: 3 of 4 reports include usable mileage. There isn’t enough coverage to show a useful chart.
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Engine And Engine Cooling. Review the 1 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Seats. Review the 1 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Service Brakes. Review the 1 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
4 reportsTHE SUBJECT CAR, A 2008 MERCDES BENZ SL550, THAT HAS NEVER BEEN IN AN ACCIDENT AND IS STORED IN A GARAGE. THE CAR WAS STARTED AND DRIVEN OUT OF THE GARAGE ON TO THE STREET, APPROXIMATELY 50 YARDS LATER WHILE DRIVING ABOUT 20 MPH, THE BRAKES 100% FAILED AND THE POWER ASSISTED STEERING STOP WORKING. AFTER COASTING TO A STOP AND P…
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THE SUBJECT CAR, A 2008 MERCDES BENZ SL550, THAT HAS NEVER BEEN IN AN ACCIDENT AND IS STORED IN A GARAGE. THE CAR WAS STARTED AND DRIVEN OUT OF THE GARAGE ON TO THE STREET, APPROXIMATELY 50 YARDS LATER WHILE DRIVING ABOUT 20 MPH, THE BRAKES 100% FAILED AND THE POWER ASSISTED STEERING STOP WORKING. AFTER COASTING TO A STOP AND PLACING THE CAR IN PARK. THE BRAKE PEDAL WENT ALL THE WAY TO THE FLOOR. THE DASH BOARD FLASHED A STOP SIGN SYMBOL AND A MESSAGE THAT INCREASE PEDAL PRESSURE WOULD BE REQUIRED. THE CAR WAS TURNED OFF AND RESTARTED. AT FIRST THE BRAKES AND STEERING SEEM NORMAL BUT AFTER ABOUT 10 SECONDS, AGAIN THE BRAKES AND STEERING FAILED. AT THIS POINT A TOW TRUCK WAS CALLED AND THE VEHICLE WAS TOWED TO A LOCAL MECHANIC. THE CAR WAS INSPECTED AND THE FAILURE WAS REPEATED. THE SHOP INSPECTED THE CAR AND DIAGNOSED THE CAR WITH A COMPUTER. SEVERAL CODES WERE APPARENT. THE SHOP RECOMMENDED THAT THE BRAKE SYSTEM BE FLUSHED AND THE COMPUTER RESET. THE ELECTRICAL SYSTEM WAS INSPECTED AS WELL AS THE BATTERIES. THE CAR HAS BEEN RETURNED TO SERVICE TODAY. I AM CONCERNED THAT THE BRAKE SYSTEM SHOULD NOT BE DESIGNED IN A WAY THAT A COMPUTER FAILURE WOULD RENDER THE BRAKES USELESS AND FAIL 100%. IF THE BRAKES WERE TO FAIL AT HIGHER SPEEDS AND IN TRAFFIC, THERE COULD HAVE BEEN FATAL RESULTS. MY WIFE NO LONGER FEELS SAFE DRIVING THIS CAR.
DRIVER PLACED A PURSE BEHIND THE FRONT SEAT OF THE VEHICLE. THE VEHICLE HAS POWER SEATS WHICH OPERATE ON A MOTOR. THE STRAP FROM THE PURSE APPARENTLY CAME IN CONTACT WITH THE SEAT IN MOTION CAUSING SMOLDERING AND EVENTUALLY THE SEAT MOTOR TO BURN ITSELF OUT. A FIRE WAS AVOIDED DUE TO A FUSE CAUSING THE MOTOR TO STOP HOWEVER T…
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DRIVER PLACED A PURSE BEHIND THE FRONT SEAT OF THE VEHICLE. THE VEHICLE HAS POWER SEATS WHICH OPERATE ON A MOTOR. THE STRAP FROM THE PURSE APPARENTLY CAME IN CONTACT WITH THE SEAT IN MOTION CAUSING SMOLDERING AND EVENTUALLY THE SEAT MOTOR TO BURN ITSELF OUT. A FIRE WAS AVOIDED DUE TO A FUSE CAUSING THE MOTOR TO STOP HOWEVER THE MOTOR WHILE IT WAS OPERATING AND PRIOR TO THE FUSE KICKING IN NEARLY CAUSED A FIRE. THE SEAT SHOULD BE EQUIPPED WITH A CONTACT MECHANISM ( SIMILAR TO THAT IN THE WINDOW AND ELEVATOR DOORS OR GARAGE DOORS WHICH CAUSES THE SEAT TO STOP UPON CONTACT. IF MAKEUP OR OTHER FLAMMABLE PRODUCTS HAD BEEN IN THE BAG, THERE SURELY WOULD HAVE BEEN A FIRE. *KB
TL* THE CONTACT OWNS A 2008 MERCEDES BENZ SL550. THE CONTACT WAS DRIVING APPROXIMATELY 40 MPH WHEN THE VEHICLE STALLED WITHOUT WARNING. THE VEHICLE WOULD NOT RESTART AND WAS TOWED TO AN AUTHORIZED DEALER WHERE THE COMPUTER SYSTEM WAS REPAIRED. APPROXIMATELY TWO YEARS LATER, THE RECURRED WHETHER THE VEHICLE WAS IN MOTION OR STOPP…
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TL* THE CONTACT OWNS A 2008 MERCEDES BENZ SL550. THE CONTACT WAS DRIVING APPROXIMATELY 40 MPH WHEN THE VEHICLE STALLED WITHOUT WARNING. THE VEHICLE WOULD NOT RESTART AND WAS TOWED TO AN AUTHORIZED DEALER WHERE THE COMPUTER SYSTEM WAS REPAIRED. APPROXIMATELY TWO YEARS LATER, THE RECURRED WHETHER THE VEHICLE WAS IN MOTION OR STOPPED. DURING THE RECURRENCES, THE VEHICLE WOULD RESTART AFTER STALLING. THE VEHICLE WAS TOWED BACK TO THE AUTHORIZED DEALER WHERE THEY WERE IN THE PROCESS OF DIAGNOSING THE FAILURE. THE FAILURE MILEAGE WAS UNKNOWN.
Recall campaigns
0No recalls in this snapshot.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
Defect investigations
0No exact-year investigations in this snapshot.
An investigation is not a finding of a defect, and closure does not prove a vehicle is problem-free.
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