It's the bushing at the bottom of the rear wheel carrier assembly. It's where the outside end of the rear lower control arm (spring link) bolts to the carrier. It's hidden inside the control arm and difficult to see, or inspect. But they're usually shot before 20 years or 200kmi. Photos below. New bushings are maybe $30 each, plus the tool rental, and a few hours labor to R&R.




The bushing is callout #8 in the diagram below. The rear wheel carrier is callout #5: