NHTSA Complaint #11547286 — 2019 TESLA MODEL 3

Car seat is able to tip onto it's side during turns in the direction of the seat belt latch by sliding down the seat belt. My child's legs are caught between the seat belt and the back of the seat causing her injury. This occurs when installing as per manufacturer instructions without base using seat belt only. It only occurs in our vehicle where the handle does not touch either front seat and the seat material is low friction, both of which I believe contribute to the seat being able to tip. I have tried to contact Britax regarding this issue however their website contact form is non-functional. We have 2 of this model car seat and they both exhibit the same behavior.