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Why is my BMW 4 Series experiencing unusual engine noise?

I recently purchased a BMW 4 Series and have been noticing some strange noises coming from the engine. It seems to be louder than usual when I start the car and at low speeds. What could be causing this?

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Answers (2)

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Check your engine oil level. Low oil can cause engine noise and potentially damage your engine.

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Have you changed your air filter recently? A dirty air filter can lead to excessive engine noise.

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