Prius rattle Rattle from rear. I think it is from the tailgate. Only rattles on rough road surface.

SOURCE: Terrible rear end rattle

It's probably the rear sway bar links. If you can jack your car up and check right behind both rear wheels you will be abale to see the sway bar which is connected to short links about 5in long with ball joints.

If either of them are broken or not connected anymore it can cause some pretty loud noises when you ride on rough roads or hit bumps. They run about $35 per link so it's not a very expensive repair.

SOURCE: rattle noise in rear end both side...

shocks

SOURCE: front end rattle

It's a loose steering column. Remove the black plastic shield under the steering wheel. Lossen the bolt that holds the two shafts together, slide them together as far as they'll go, and re-tighten the bolt. It's that simple... to stop that annoying rattle.

SOURCE: Rear brake pads rattle

There are spring clips which keep the pads tight in the caliper. These spring clips are missing, or are broken, or have lost their tension, etc.

SOURCE: rattle in top of rear tailgate

replace the two stoppers on either side of the top hatch. bmw redesigned these as they were problematic