Had it checked out today, exhaust OK, and springs and shocks all look ok. Checked spare wheel and is all secure. Only happens when over bumps, runs fine?
It hasent got the drop arms on the front roll bar like the vito has it, these will knock and make a right clatter when you go over bumps if the ball joints are warn. Sounds just like the exhaust banging on the underside of the car, cheap and easy to replace if it is that
Did you jack up the car and remove the rear wheels to inspect the rear springs? It's sometimes very difficult to see the breaks at the ends - MOT inspectors even miss them.