Thanks for the welcome! I'm not new, just new to the new forum. Been around since 2006.
I bought the Mini to autocross and have been doing that since I got the car back in 2006. I was autocrossing at a Pro Solo event when the car died on course (coincidentally, I got my best time on that run...should tell me something). Long story made short, the engine didn't have sufficient oil in it to be doing an event like that. In trying to get it fixed under warranty (it had less than 48K miles and there was no oil leak), we learned that the Mini was due for an oil change in December of 2008. Despite the fact that MoS has seen the car twice since December, we were never advised of that. We tried to take it to Mini of USA to get some sort of break on a $10K engine, but because 1) I admitted the car died while autocrossing (thinking hey, Mini is a sponsor of the Pro AND honesty is the best policy) and 2) we didn't get the oil changed for 18 months, we were found negligent with no support from either the dealership or Mini of USA. Mini of USA flat out told me that if it had happened during the course of normal driving, they would have supported me, so that was a little hard to swallow.
Fast forward to today. I found an engine for half the price that MoS wanted and will be having Lucky Dog Garage install it for me, along with a new clutch. These things combined will cost me LESS than what MoS wanted to charge for a new engine alone.
Hope that helps. Moral of the story, check your oil before your race and don't trust that a dealership will be your safety net. Ultimately, you are the one who is responsible for knowing what maintenance you need.