After a crash and a good repair, your car is still worth less because it now has an accident on its record. In most states you can claim that lost value from the at-fault driver's insurer. Whether your own insurer pays it, how long you have, and what happens if you were partly at fault all depend on your state.
Fault rule: "Pure" means a share of blame cuts the claim but never bars it; "50% bar" and "51% bar" mean you get nothing at that share or more; "Contributory" means any fault can bar it.
Every fact on a state page is cited to a statute or court decision we read, with the date we checked it. Anything we could not check is marked "Not verified".
What doesn't change by state
You need someone else to be at fault to claim from their insurer. If you caused the crash, there's usually no one to claim against.
Insurers start low. Many use the "17c" formula, which caps the loss at 10% of the car's value and then cuts it for damage and mileage. Independent appraisals often come back two to three times higher.
Ask in writing, with proof. The repair invoice, listings for the same car with a clean history, and an appraisal if the numbers justify one.