Hi. I'm due to have my first car service in January on my E220 diesel. It has 7000 miles on the clock, so I'm presuming a service will be prompted on its 1st anniversary. I'm wondering what to expect from the garage. Is it just a basic oil and filter change or could there be other add ons ? There are no messages from the computer currently. I don't want to be ripped off as happened previously with my old car.