btw - if the underside of the front bumper has taken a whack - is the full undertray still on underneath the engine bay? Our 1.4i had a cracked lower bumper after a coming together with something and the undertray was long gone. Obviously it will be beneficial for it to be off for a little while while you replace things like the engine air filter and sort out anything else that needs to be done underneath, but according to several people here, once everything is done, noise and fuel efficiency at speed suffer if it isn't in place.