When I took mine in for a service, they warned me to take everything out of the car because they said 'things go missing' which is code for, we know our staff steal things from the car and there is nothing we can do about it.

As for the rest, honda toyata etc, I here bad things about them too. they are all the same, as one company has the monopoly on servicing, there is nowhere here to take your car, you are basically stuffed.