There IS a TSB (technical Service Bulletin) out for this on our cars. Its the bushings in the rear. They need to be replaced. If you do a search for Clunk or Thunk or something, you should find all the info you need, including part number to bring to the dealership. Agree its very annoying and definetly :bs: that the dealership/Mazda isn't a bit more diligent in trying to fix it when they know its there/very easy to find out what is wrong with a little research.
I don't understand why dealerships don't believe thier customers...Why would anyone go through the hassle of bringing their car in if there wasn't anything wrong? It baffles me...:bs:
I like this BS smiley...