Will a repossessed car be removed form your credit in 7 years?

It may or may not fall off your report in 7 years. This depends on the Statute of Limitations, which may vary from state to state. However, it usually will fall off your report along with other baddies* on your report...

* baddies: term referring to things on your credit report that bring your score down, like collections, repos, foreclosures, delinquencies, etc...