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Why is my BMW 1 Series making a rattling noise when starting?

I recently purchased a used BMW 1 Series and noticed that when I start the car, there is a loud rattling noise coming from the engine. The noise goes away after a few seconds, but it's quite concerning. Is this normal or should I be worried?

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Hi Emily! It's always best to get any unusual noises checked out by a mechanic. It could potentially be a problem with the engine, such as a loose component or worn out part. Ignoring the noise could lead to bigger issues down the road.

S

Hello Emily, it's not uncommon for BMW engines to make a rattling noise during start-up. This is usually due to the pistons warming up and expanding. However, if the noise persists or gets louder, it's best to have a professional take a look.

M

Hey Emily, I had the same issue with my BMW 1 Series. Turned out to be a faulty valve cover gasket. I would recommend taking it to a trusted mechanic and having them check it out just in case.

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