Mercedes-Benz Sl 450
2018–2020
NHTSA has 2 open investigations on this vehicle right now.
Data Availability
Milemark has zero classified NHTSA complaints for the 2018–2020 Mercedes-Benz SL 450. This doesn't mean the vehicle is problem-free—it likely reflects low sales volume and that owners may resolve issues through dealerships rather than filing federal complaints. Our analysis relies entirely on recall records and technical bulletins.
What We Know From Recalls
Mercedes issued 4 recall campaigns for this generation. Two involved the emergency call system (eCall/automatic crash notification), two addressed software issues in the electrical system, one covered passenger airbag inflators, and one involved the rear axle assembly. None suggest catastrophic mechanical patterns, but the axle recall warrants attention during pre-purchase inspection.
Warranty Extensions and Technical Bulletins
Mercedes published 71 technical service bulletins for this model—a significant number suggesting various known issues requiring dealer fixes. Without complaint data, we can't verify owner impact, but this TSB volume indicates the SL 450 needed ongoing refinement.
How to Research Further
Given limited data: obtain a pre-purchase inspection from a Mercedes specialist, check model-specific forums (MBWorld, BenzWorld) for real-world experiences, and run the VIN through NHTSA and manufacturer databases for vehicle-specific recalls.
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.