When you turn the car on, it will tell you if it needs a service. At first it lights up yellow, mine did this when brake fluid was due, but for oil it just said 05/2011. Then at the start of May the symbol turned red and it said it was overdue!
![Embarassed :oops:](./images/smilies/blush-anim-cl.gif)
In the iDrive you can look at each component in turn - and see when it will need done. It will be two years at most though, if your mileage is low.
This is the first BMW that I haven't added any additional oil to in the first 2 years.
No need to worry - it will let you know when it needs a visit to DP's
![Razz :P](./images/smilies/tongue.gif)