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What 4 owners told NHTSA about the 2015 Mercedes-benz Slk-class

These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.

All (4)Body & structure (1)Brakes (1)Fuel system (1)

1 of 4 complaints match · Body & structure · clear filters

Jan 5, 2023Body & structure

The roof panel on my car separated from the body of the vehicle during normal highway driving. This failure is similar to recent prior recalls on other Mercedes Benz models where, due to failed glue bonding, sliding panels on those models detached from vehicles during driving conditions. At least one news article described those component failures as being due to a "defect." In my case, the entire roof panel separated from and blew off the car. The loss of a roof from the body of a car during driving conditions creates obvious safety issues for the occupants of the vehicle and for those in other vehicles or otherwise using the road. I have regularly maintained my car at a certified Mercedes Benz dealer and this potential issue was never raised or identified to me.

NHTSA ODI 11500350

Working with the data? Download all 4 complaints as CSV · fetched from NHTSA July 26, 2026

How to use these: a complaint is one owner’s report, filed voluntarily and published unverified. Patterns matter more than any single story. If several owners describe the same failure at similar mileage, put that system at the top of your pre-purchase inspection list. Back to the full 2015 Mercedes-benz Slk-class verdict →