This toy looked really good when we got it, really detailed and a bit of a pig to transform first couple of times (Thats all the fun of transformers though I guess!), problem was, once you had changed it a few times, the joints began to get really loose, then everytime you changed it, bits started falling off.
One of the other problems was if you put a bit too much pressure on when opening/closing certain parts of the toy, you can damage the tiny gears, once that happens, it never goes into either car or robot properly and starts to look a bit tatty.
Overall, this toy would probably be ok if looked after really well, so probably best for older children, but younger kids will destroy it in minutes.