Why does my BMW 3 Series have a loud engine noise?

I recently purchased a used BMW 3 Series and have noticed that the engine makes a loud noise when accelerating. It's quite bothersome and I'm wondering if this is a common issue or if there is something wrong with my car.

The loud engine noise could be due to a variety of factors, such as a faulty exhaust system, worn-out engine bearings, or even a simple issue like low engine oil. It's important to have a mechanic inspect your car to determine the exact cause of the noise.

I also have a BMW 3 Series and experienced a loud engine noise. After having it checked, I found out that one of the exhaust pipes was loose. It's a common issue with BMWs, so it's worth checking that first.