Does renter insurance cover theft if your car has been broken into?

It depends on the level of coverages you chose when you shopped your renters insurance rate. If you chose the cheapest rate available then you may have no coverage at all available through your renters policy.

If you elected coverage for off premise property, then certain household contents that may have been stolen from your vehicle can be covered.

But the auto itself no, That would be covered by the comprehensive portion of your auto insurance policy