Ive had 55mpg out of my glanza S, on the way to london! theyre not bad on fuel, same with ep91 n/a's aslong as youre cruising at 60 at just below 3k revs fuel is great ive noticed!
you need to get a confirmation of your no claims bonus gained with that company you insured the corsa with.. they usually honor it if you give them a nice polite call.