335d engine noise after break-in - BMW Forum - BimmerWerkz.com

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post #1 of 3 (permalink) Old 12-08-2011, 10:11 PM Thread Starter
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335d engine noise after break-in

Went and test drove two 335ds today.

The first one was a 2011 335d with 7,200 miles. This was my first time driving a 335d.

Later on that day I drove a 2010 335d with 23,500 miles. The 2010 with more miles was much louder than the 2011 335d. The 2011 you could barely hear, but even my girlfriend noticed how much louder the 2010 was. I am more interested in the 2010 because it has the sport package.

Want to confirm this is perfectly normal because of the extra mileage. My understanding is that as these engines break-in they become significantly louder than new. Just wanted to make sure even with just 15000 miles more the engine could be that much louder. Should I expect the engine to get any louder after 23K miles? They bothed performed the same.

Any information would be greatly appreciated!

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post #2 of 3 (permalink) Old 12-09-2011, 12:08 PM
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I wouldn't let it concern you too much, just make sure you get a comprehensive warranty with it (Or whichever one you choose)...
Maybe its due another service?

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post #3 of 3 (permalink) Old 11-05-2014, 08:37 PM
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Stay away from 2009-2011 diesels, I have a 2011 lots of problems with carbon build-up.You been warned!!
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