This is very underhand unless explained fully on collection. Mercedes App also only is for three years and without paying extra, you loose traffic updates for navigation, locking/unlocking thru app, car locator, seat/ mirror linked to remote etc. subscription is £79 per year. As I’d extended the lease, I lost those benefits, some of which I used quite often, Personally, I think if they are time restricted , it should be linked to vehicle servicing. Use a mani dealer to keep the subscription up. (of course, as we use main dealers, it would suit us).