A question that has caused great debate in the past..... The warranty remains in place as long as the required standard of work, parts and materials is maintained. Mobilio is over and above the warranty - one requirement for the corrosion cover, for example, is an examination every two years (according to my book, anyway). As it's not a warranty, MB can attached whatever terms and condition they like to it. I know some have posted that, when the Mobilio man has arrived, he wants to be able to check the service record which would determine whether you would get charged or not.