I own a base model 2010 LR4 and it has a rattle noise like something is loose whenever I hit a speedbump, pothole, etc when going over 15 mph. I have taken the car to the dealer several times and they cannot figure it out....right now they are saying its just how the car is but I refuse to take that as an answer. The dealer has acknowledged the fact that there is a rattle. I want to know if there is anyone else with a base model LR4 that either has this issue or can test it out. Note: The LR4 HSE does not do it as the dealer I took it to tested it out on that model. The reason why they have not tested on another base model is because they do not have any others. I'm really losing my patience with this issue and hope someone out there has some advice.