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      06-18-2013, 04:51 PM   #4
Bob UK
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United Kingdom
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Drives: 2013 X1 18d X-Drive
Join Date: May 2013
Location: England

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Quote:
Originally Posted by Duck View Post
That happen to N47D20 - might be chain or generator belt.
Advise you ask serviceman at official service.

If the reason of the noise is a chain - cost of fixing that might go to BMW as this is typical problem with N47.
According to the PUMA cars built after about mid 2011 have no risk of timing chain breaking as modified parts should already be fitted so unlikely to get any joy under warranty. I suspect the noise is actually an auxilliary belt and is normal but I'm keeping an ear on it for changes.