All of it. The 10 percent figure you occasionally see is nonsense that a lot of people believe just because they've seen it so much.
Quick Answer. Some things that cause a vehicle's front end to make a clunking noise are worn ball joints, a damaged tie rod, broken or loose sway-bar links, hard or damaged shocks, and faulty shock mounts. An automotive professional can inspect the vehicle's front end to locate the source of the clunk. Continue Reading.
Full Answer. If the car makes a clunking sound when it is put into gear or when the gears are changed, this indicates a potential problem with the transmission. If the sound occurs when the wheel is turned, the problem is most likely with the wheel bearings.