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Discussion Starter · #1 ·
I just purchased a 2011 335d with 45k miles. Its still under the factory warranty for a bit and I opted not to buy an extended warranty at the dealership without having researched companies and provided coverage.

I have now just discovered there are reoccuring issues with carbon build-up (CBU) among some owners. I've reviewed the warranty coverage printed on the original vehicle window sticker and it lists basic factory warranty coverage up to 50k and extended coverage up to 70k for emission related failures. Would CBU issues be covered under the emission warranty coverage?

Lastly, if anyone has a suggestion on an extended warranty coverage, it may turn out to be a huge help.

Best Regards
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