Last year, the National Highway Traffic Safety Administration (NHTSA) opened an investigation into braking issues in over 600,000 vehicles. Owners with certain 2013 and 2014 cars had been complaining that their pedals went to the floor in a terrifying moment of complete brake failure.
Nissan said the problem was likely a bad seal inside the master cylinder and they changed the design in September 2013. Guess what happened when they did that? Yep, a sudden decrease in warranty claims.
Despite the evidence, NHTSA says it could only link three crashes to the pre-redesigned master cylinders and opted to close the investigation without requesting a recall.