Hello there, I am Pauline's husband, I don't normally drive her Volvo, but she's been moaning about this knocking noise for months. So today she gave me the keys and said you try it.. This is my view, its a irregular knock a sort of du du coming from the offside, it seems more responding to suspension movement than wheel rotation, Pauline says it goes away after a time, I would disagree its just gets quieter to a point where its barely noticeable.She says Its got worst recently. Has she says, three different garages, including a Volvo dealer have checked the car over and found no fault.
I think you have bad spring seats in front shocks and bump stops thry make noise how you describe