Georgia is where the modern fight over lost value began. A diminished value claim in Georgia can go to your own insurer or to the at-fault driver's insurer, and courts back both routes.
Mabry Changed the Rules in 2001
In State Farm v. Mabry, the Georgia Supreme Court asked what "loss" means in a car policy. Its answer was that physical damage can lower a car's value even when the repair is good. State Farm had to assess that loss along with the damage itself.
The MWL survey of all 50 states reads the holding as a rule of public policy. Insurers in Georgia pay lost value as well as the cost of repair. They also have a duty to check every first-party damage claim for it.
The Formula That Came Out of Mabry
State Farm then needed a way to measure the loss. A federal appeals court opinion says the company built its own method, the 17c formula, and a Georgia trial court approved it. The odd name is just an address. J.D. Power notes that it sat in paragraph 17, section C of the order.
Today, Carfax says, many insurers use it. Owners in that federal case argued it was designed to produce low figures. You can see how its caps and multipliers work on our 17c formula breakdown.
The Commissioner Never Blessed a Formula
In a 2008 directive, the state insurance office said it had never endorsed any formula or method. Carriers must weigh all relevant information. Total reliance on one formula may not be appropriate, the directive added. So a 17c number is a starting offer, not the final word. Answer it with an independent appraisal.
Suing the Other Driver: Fault and the Statute of Limitations
Third-party claims rest on older case law. In Myers v. Thornton, from 1997, the Court of Appeals allowed repair cost and loss of use plus the value of any permanent impairment. That last item is the lost value, and the at-fault driver's insurer owes it.
Fault can block the claim. Under Ga. Code § 51-12-33, you receive nothing if you are 50 percent or more responsible. Under that line, your award drops by your share. You have four years to sue for injury to personal property under Ga. Code § 9-3-31.
Georgia's insurance commissioner requires the other driver to carry at least $25,000 per incident for property damage. That one sum pays the repair and the lost value together. Claims under $15,000 fit magistrate court, which works as the state's small claims court. If an insurer ignores Mabry, file a consumer complaint. Next door, Florida treats your own policy very differently.