Im having these massive clunking sounds/ knocking sounds from under the chassis when i apply the brake slighty at low speeds. It's like someone is hitting the car from under with a hammer. You can feel the whole car bump.

The dealer said a few customer has had such problems in traffic, but i mean WTF mate!

 

the title should be clunking, not clucking, chickens cluck, cars dont. Actually cars shouldnt be clunking as well..