There probably won't be anything wrong with it at all. My father has a 10 reg and nothing has ever gone wrong with his. On a life of short runs of just three miles she won't charge the hybrid battery much, though, so she won't be running electric much at all, so her fuel consumption will be that of a 1.8 petrol automatic. She will get 50mpg + if she takes it on longer runs of 15 - 20 miles.