All Model Ys in the US built since late 2022 have what's called Comfort Suspension, which provides improved ride comfort & reduced road harshness while maintaining steering & handling precision.

GPMD: @SawyerMerritt @Tesla @larsmoravy Yeah that’s part of the problem it rides like it’s going over these rocks even on a flat highway. Horrible suspension. Not sure why that wasn’t addressed.

via Twitter @Sawyer Merritt