This has been known issue with LR3. I tried really hard to get it pin pointed and fixed at various dealers but to no avail. Several parts in the front suspension were changed under warranty, including steering column, control A arms, and the sway bar (with revised bushings), but the knock or rattle feel is still there. I have really enjoyed my LR3 but this one thing has plagued the driving experience. I wonder if this has been fixed in LR4, or someone here has experienced it again with their LR4. I am interested in finding out because before i drop a big chunk of cash into purchasing my new car (LR4), i'd want to make sure that there are no known issues now as far as the front end. The knock/rattle/clunk noise (felt thru steering wheel) happens when you drive slowly over square edge bumps (like entering driveways, or small hard edged pot holes etc. There is a sweet spot, it doesnt occur if you drive faster or slower than what it takes. I just dropped in my LR3 for service and the shop foreman mentioned that he has heard some customer complaints about the same clunk/noise in LR4 as well. He said that Land Rover knows it but maybe its fix is not on the top of their list of priorities.