Diminished value claims in Connecticut

Claims against the at-fault driver

In Littlejohn v. Elionsky (1944), the Connecticut Supreme Court held that the measure of damages is the difference in value before and after the loss, and that repair cost is proof of the loss only if the repairs substantially restore the car to its former condition. The court gave the example of a new car that is repaired to a sound state "and yet be worth much less than before the collision."

In Orlando v. Liburd (2026), the Connecticut Supreme Court said its case law clearly establishes a right to recover for loss of use and diminution in value, even if the vehicle has been repaired.

Connecticut Civil Jury Instruction 3.4-12, added in 2023, measures diminished value as the difference in fair market value before the accident and after it as repaired. It says an owner does not have to sell the car to receive the award, and the award is not reduced because the owner can still use the car.

Claims under your own policy

No Connecticut appellate decision was found on diminished value under an owner's own collision coverage. A 2007 report by the legislature's Office of Legislative Research said such claims are typically not covered because policies commonly exclude diminution in value, so check the wording of your own policy.

In Amica Mutual Insurance Co. v. Gilleran (2026), the Appellate Court held that a liability insurer had a duty to defend a third party's diminished value claim, because Connecticut damages for a damaged car may include repair costs and diminution in value.

Filing deadline

Conn. Gen. Stat. 52-584 gives two years from the date the injury to property is first sustained or discovered to sue over damage caused by negligence, and no more than three years from the act complained of.

That is the deadline for filing suit. A Connecticut attorney can confirm how it applies to your dates.

How diminished value claims tend to go in Connecticut

Connecticut runs a state arbitration program for auto physical damage and auto property damage liability claims where liability and coverage are not in dispute (Conn. Gen. Stat. 38a-9(b)). It is available after the Insurance Department's mediation has not resolved the dispute, and the insurer pays the undisputed amount when the case is referred.

When the owner's own insurer collects from the at-fault driver's insurer, that recovery draws on the same property damage limit. In Orlando v. Liburd, the owner's insurer's recovery used up the at-fault driver's limit, and the court allowed the owner's claim over that to go forward.

Many insurers answer a diminished value request with a formula rather than a market study. The best known is the 17c formula, which came out of the Georgia class actions over first-party claims that followed State Farm v. Mabry; its name comes from paragraph 17(c) of an injunction in one of them. It starts from a capped share of the car's value before the crash, then reduces it with damage and mileage modifiers. A law-firm survey notes it was built for that class action and has not been formally adopted for general use.

Adjusters commonly ask for proof that the repaired car is worth less, not only proof that it was damaged. Records that tend to matter: the final repair invoice and photos, the estimate showing any structural or frame work, the vehicle history report entry, and written market evidence such as dealer quotes or listings for the same car with and without an accident history.

Lost value is easiest to show once repairs are finished, because the value after repair is what gets compared with the value before the crash.

If you have a complaint about claim handling

The Connecticut Insurance Department takes consumer complaints and questions about how an insurer handled a claim, and runs the auto claim arbitration program. File with the Connecticut Insurance Department.

Next steps

• How Reclaim's diminished-value check works
• Estimate a figure with the diminished value calculator
• How to file a diminished value claim
• Diminished value claims in New Jersey
• Diminished value claims in Delaware
• Diminished value rules in every state