I had an issue where there was excessive cabin noice while driving especially under 30mph. Had it serviced and dealer said it was normal. It drove me nuts for a while. I finally asked the dealer to have one of the tech take a quick drive to describe the noise. Sure enough the tech agreed on the low pitch noise. He thinks it a hole in the firewall that is causing the engine or outside noise to come in.

So far its on the shop for 2 days and they are still yet to identify the issue. They did however find a small oil leak by the engine. Not sure yet where exactly.

Its a 2008 CPO with 43k miles. Original warranty expires in August. Does anyone here had any this kind of issue? It seems the oil leak is common. I just hope this is not a headache waiting to happen in the future.

Thans

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2008 E70 Space Gray 4.8i
2006 E53 Stratus Gray 3.0 (Retired)