I've had my E90 320d for awhile now, never had any loud noises after 10k km. Malaysian diesel is not the best but let's it's not that bad.
tcyeow, if you send the car immediately after it goes below 5k km like me and you don't rempit all the time, you'll end up changing your engine oil roughly every 10-11k km. If you rempit a lot
you might send it in as early as 8k km from the previous service. You don't have to wait until the indicator goes to 0 before you send it in. I've used AB, Quill and Ingress and they never deny me service.
Think about this if you're planning to do mid service oil change.