Clutch slipping at 21,000 miles
I have a Mini Cooper SD, Built Nov 2011. At about 21,000 (start of this month) the clutch started to slip. I'm now nearly at 23,000 and it's getting worse. It happens in 3rd,4th,5th and 6th. When I get to about 2,000 RPM, the rev's slips. It was first very intermittent, but its now progressively getting worse. Once it hits 2,000 RPM, it may slip to 2,800 then back down to 2,200 and catch on. Past couple of days, it's been getting to 2,000, going to 2,800/3,000, back down to 2,200, slipping again to 2,800 and back to 2,500.
I've rang my local Mini dealer, It's booked in Tuesday 29th. They have quoted me £127 per hour to just investigate the issue, and to see if it'll be covered under warranty. Very shocked about this.
I'm very doubtful it's anything to do with my driving. I've had 2 previous cars (Racked up 70k miles in one, 50k in the other) and never once had clutch issues. I drive on the motorway every day. I am concerned that I am the second owner (purchased it at 9,700 miles) and it was owned with lease company before (as I'm aware) so I'm wondering if that has something to do with it? (Previous drivers etc)
What can anyone recommend? What's the chances of this being covered under warranty?
I've phoned up some local garages, with quotes in the region of about £600 for just the clutch repair. I just don't want to spend a couple of hours at mini (so lets say £254 for 2 hours) then not get mini to fix (I don't fancy the expensive repair bill) and end up spending another £600 else where.