Strange Knocking

[AshCFC]

Every time I go over a bump, no matter how big or small, I get a knocking sound (sound like it's coming from passenger side front wheel area).

Took car to local garage. Mechanic took it out on a road test and could also hear the knocking so put the car up on the ramps, but after 30 minutes, could't find a thing (all free of charge).

Spoke to Lexus who said they could also do a road test but would charge 51 sheets to take a look on the ramps!!

2 questions, has anybody else experienced this knocking (it is Intermittent), and are Lexus right to charge £51 for me to be told that it's going to cost me hundreds to get fixed?

Many thanks

Ash

[Matus]

is it possible that the sound is coming from the dashboard?

[AshCFC]

is it possible that the sound is coming from the dashboard?

I dont think so, really seems to be coming from the passenger side, under car.

P.S. How on earth are you getting 41.9 MPG?

[Matus]

I rarely drive in traffic jam.

[PCM]

Bet it was a loose spare wheel.