The driver front seat bottom frame has came loose and rocks back and forth when driving, especially during start and stops. It was serviced and the dealer stated the movement comes from the side rails of the seat and is referenced via bulletin 12-288-20 stating its a known issue and the frame has been redesigned for this issue. After research, this seems to occur with a number of Subaru models, but the defect has not been covered by Subaru. The movement causes concern if an accident were to occur and should be considered a manufactures defect with replacement being covered by Subaru.