Hi, I am on the verge of purchasing a BMW 520d xDrive M Sport (2018). The car is on 121,000 miles. I was wondering if anyone with more knowledge than me can listen to the video on the following link of the engine and see if there are any abnormal sounds showing potential issues? https://streamable.com/j75uf3 I would be really grateful if someone can assist with this as I am a little torn about whether I should go ahead with the purchase. Thanks in advance.