Thanks. I didn't think about the extra tyre width. That makes sense. I am considering getting a '2', but I have timed it badly with the changes to vehicle tax on cars registered from the end of this week. If I want to take advantage of the old emissions-based taxation I may have a limited choice of ...

As a prospective owner, I am going through the specs for the different trim levels. Can anyone tell me why the '3' and 'First Edition' have much higher official emissions (+15%) and much lower official mpg figures (-14% combined) ? At first I put this down to wheel size, but the circumference of the...