| Which mini specialist did you use?
Have you tried sitting someone in the car with the seats down and then squirting it with a hose pipe? That should help you identify where your leak is coming from.
40k on an 8 year old car can (not always) be a bad sign. As the mileage is very low it could be that the car has only been used for short runs (school run, round town etc) which puts a lot more wear on the car than doing a long run... Parts obviously wear faster in town too with speed bumps etc...
I'm sorry if my post came across wrong, but I've read a lot of posts saying how rubbish/badly designed/low quality a mini is because a couple of mechanical wear and tear parts have worn out over 7/8 years! Parts don't last forever, and 8 years is a long time when you think about how much abuse these parts get - rain, salt, snow, heat, too fast on speed bumps (we've all done it) etc. It gets incredibly tiresome when you read people saying that the car is rubbish, badly designed, low quality etc the car is - its 8 years old!!! 
The Original MINI One Seven
Yorkshire MINI Register - PM for details |