This is an update from my previous post on rattle sound coming around or below the rear seat. I have changed the topic to get more feedback and opinions.

So I have just picked up my car after 4 days of work to replace the fuel pump. The service advisor explained to me that the new fuel pump will still make some noises in the early morning while pumping the fuel to the fuel line but should be as loud as the old one.

Do it make sense? Have you experience the same issue?