My 2017 had this issue from day one as I drove off from the showroom. The rack does not fail, it just rattles as the car rides over rough roads. I initially thought the noise came from a loose bonnet latch but a few months later upon my insisting to sort out the bonnet, the dealer said it was in fact the rack and they had already put in a claim on my behalf months ago but the factory had no racks at the time and that they were waiting on one to arrive for me. They greased the rack but that did no good. Happy ending, the rack came and it got installed. I still have the car with over 80k kms and it drives like a dream.