Mercedes-Benz Sl 550
2020–2020
NHTSA has 2 open investigations on this vehicle right now.
Data Availability
Milemark has zero classified NHTSA complaints for the 2020 Mercedes-Benz SL 550. This doesn't mean the vehicle is problem-free—it means owners either didn't report issues to NHTSA, or the model is uncommon enough that our database lacks meaningful complaint data. What we do have: 5 recalls, 75 technical service bulletins, and 2 open NHTSA investigations, all of which provide documented evidence of known defects.
What We Know From Recalls
Mercedes-Benz issued 5 recalls for the 2020 SL 550. Two involved software in the auto crash notification system, one addressed a passenger airbag inflator, and two targeted fuel injection components (fuel rail and injectors). The fuel system recalls are particularly notable—fuel delivery problems can cause stalling or fire risk.
Technical Service Bulletins
Mercedes published 75 TSBs for this model year, a high number that suggests various technical issues documented by dealers. Without complaint data, these bulletins are our clearest window into real-world problems owners may encounter.
How to Research Further
Given limited data, get a pre-purchase inspection from a Mercedes specialist, check model-specific forums like MBWorld, and run a VIN history report to verify recall completion and prior damage.
Sources: NHTSA Office of Defects Investigation — complaints, recalls, investigations, service bulletins. Methodology. This is not an inspection and not a recommendation to buy or avoid this vehicle.