My lovely new Toyota C-HR's windscreen developed a crack whilst sitting on the drive overnight. I took it to the dealer and after a few days was informed that it would be fixed under warranty. However, this took four weeks to get done, during which time I found a C-HR forum and was horrified to find numerous posts from other owners who had the same thing happening. I spoke to Toyota UK who admitted to a manufacturing problem, but I am disappointed that this issue has spoilt my experience of an otherwise wonderful car. I'm worried that the fault may recur. If it does, would I be within my rights to reject the car and ask for a refund?