wel this is one i can personally say about , ive had my car 4 years now and not had one service because each time ive been they have attitude of keeping me waiting hour plus past appointment time each time ive been and mobility have done bugger all about it as company wont collect car for service either . of course its mercedes . ive had car done myself and is low mileage so its ok but mobility havent said a word to me no letters emails etc nothing