This was a great book that both my children really enjoyed, boy 6, girl 8. Bedtime is the usual nightmare!! in my house but I have to admit that I have taken to read them both the same book at the same time by sitting outside on the landing and the story was so fascinating that I would say "come on bed time and let see was Stig is up to" and they would both run up the stairs to continue the adventure. I worried maybe it might be more boy than girl but to be honest it suitable for any child with an imagination. Well written and easy to read and understand it had everything a child needs in it, adventure, new friend, mischief, silly and funny all rolled into one. If you are reading this to your children, you will enjoy it too.
PS reading on the landing is a great idea they both love the stories and it means that you routine is done in half the time. I hear the kids chatting about the book during the day too, which is novel for mine two.