Since this thread dates back 3 years ago, I wanted to update on the current issue with 2005/2006 MCSs produced late this summer.
I picked up Miles on Sept 28th 2005 (week 36 build), and within a week or so, the belt squeal became very evident, embarrassingly so in my parking garage at work.
Took the car to the dealer, and they fooled around with the SuperCharger and other things, and the next day I picked it up, and turned around and went right back because within 5 miles it was worse than before
- my Service Advisor, the Sales Manager, and the Service Manager all met me when I came back and they heard it loud and clear.
They spent the next two days trying all the fixes they knew (belt tensioner, etc.) and got nowhere, and my Service Advisor asked me to call the Service Manager and I firmly but politely told him I was very disappointed at this time - 4 days on a known problem and no end in sight (it has to do with a batch of parts from late summer 2005, and it is very random but not uncommon - they had 3 other new cars waiting after me with the same problem) and if they didn't figure it out soon, I'd just assume get my money back.........
Well, that got him to call MINI and they came up with the fix. They put a shim on one (or some) of the pulleys and used a new "5 rib" belt, and all and been well and good since then - 3 weeks or so.
I must say, I was very perturbed at the whole situation, and when I was called on the service follow up, they did not get "all 5s" to say the least, and they actually had MINI call me directly and I told them how disappointed I was with MINI and the dealer floundering for a week on this.
But that was then, everything seems to be fine now, and I am again a happy owner