Tbh, I never really look at the recommended ages unless I'm giving it as a gift. In my home, I offer care to multiple ages. There are certain things that aren't available at all times because I feel that they need my undivided attention when those are out but hot wheels isn't one of them.
In reality, almost any toy can be a hazard when it comes to children! I use my common sense and judgement with each group I have and put out toys that I feel are appropriate for their capabilities, not ages