Quote:
Originally Posted by Gamb1t
The N20 like all DI engines have noisy valve lifters during cold start-up. Something to do with emissions. It does quiet down after it is warmed up. I think the X1 without a hood dampener amplifies the sound more so.
There are numerous threads on the n20 noise in various BMW forums. Oil type is seldom the fix. It's just the nature of this DI engine and it is not a nice noise either.
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This. My wife's old 328 was the same way. I got so so used to that distinctive sound from hearing her's that I could tell from the sound when walking through a parking lot if a 328 was coming up from behind me.