2011 Mercedes E300 252hp petrol engine sound

Hello everyone,

I am considering buying a Mercedes E300 with the 252hp petrol version, but I am not sure if the engine sounds as it should. I have recorded a video of a cold start and 3 minutes of idle. I would appreciate any opinions.

Thank you!
Nico

https://youtu.be/JE3fVIA_9yU?si=-t2ZXeYiuGt3uUB8