Who can claim diminished value in Montana
- Third-party claim (another driver caused the crash): diminished value is presented as part of your property-damage claim against that driver's liability insurer. Montana law on this specific item is unsettled, so expect pushback and bring evidence.
- First-party claim (your own collision coverage): standard collision wording promises repair or actual cash value, and insurers usually deny a separate DV payment. Read the exact wording of your policy.
Montana deadline: 2 years (Mont. Code Ann. § 27-2-207)
Two years for injury to personal property or for injuring goods or chattels. That is one of the shorter windows in the country, so do not let a slow claim run out the clock. If talks stall, get advice well before the two-year mark.
Fault: Mont. Code Ann. § 27-1-702
Modified comparative fault: you recover if your negligence was not greater than the combined negligence of those you are claiming against, and your damages are reduced by your percentage.
How Montana law treats diminished value
No Montana statute addresses diminished value directly, and third-party claims generally fall under ordinary property-damage law: the at-fault driver owes the loss caused, and you must prove its amount.
The Montana Supreme Court has touched the issue only in passing. In Hop v. Safeco Insurance Co. of Illinois, 2011 MT 215, 361 Mont. 510, 261 P.3d 981, an owner sought residual diminished value from the other driver's insurer as a class action. The court reversed class certification on procedural grounds and did not decide whether insurers must pay residual diminished value. Treat the question as open in Montana, not closed.
Because the law is unsettled, evidence carries more weight here than in many states. Show the final repair invoice and supplements, structural and frame work, any driver-assist recalibration, and comparable listings from Billings, Missoula, Bozeman or Great Falls with and without accident history. In thinner rural markets, explain how you chose your comparables.
How insurers value a totaled car in Montana
When a Montana insurer totals a car, what it owes is set by your policy's actual cash value wording (or, on a liability claim, by the car's market value). Insurers generally declare a total loss by comparing repair cost plus salvage value with the car's actual cash value, and the value usually comes from a vendor report (CCC ONE, Mitchell or Audatex).
Ask for the full vendor report. Check that each comparable truly matches your trim, drivetrain and options (four-wheel drive and towing packages matter in Montana), that mileage adjustments are reasonable, and that condition deductions are specific to your vehicle rather than a blanket figure. Long distances mean comparables may come from far away, so confirm where each one was listed.
Questions or complaints about how an insurer handled a total loss go to the Office of the Montana State Auditor, Commissioner of Securities and Insurance, which accepts insurance complaints online.
The appraisal clause in Montana
Many Montana auto policies include an appraisal clause for disputes over the amount of a covered physical-damage loss. You and the insurer each choose an appraiser, the two pick an umpire if they disagree, and a written agreement by two of them sets the figure. It decides value only, not coverage or fault.
Appraisal is part of your own policy. It applies to a total loss under your collision or comprehensive coverage, not to a diminished-value claim against the other driver's insurer.
What else matters in Montana
- Montana gives third-party claimants a statutory claim-handling remedy, but with a timing rule. Under Mont. Code Ann. § 33-18-242(7)(b), a third-party claimant may not sue an insurer under that section until the underlying claim has been settled or a judgment entered, and under subsection (8)(b) the suit must follow within one year of that settlement or judgment. This is the rule that ended the class action in Hop.
- Montana small claims court hears money claims of up to $7,000 (Mont. Code Ann. § 25-35-502), which can fit a diminished-value dispute on many vehicles.
- Gravel roads and hail are common sources of body and glass damage in Montana. Keep photos of the crash damage itself, so a buyer-facing history report can be tied to the specific repair.
What to gather for a Montana diminished value claim
- The final repair invoice, with every supplement
- Photos of the damage before repair, and of the car after repair
- Proof of the car's condition before the crash: service records, earlier photos, mileage, trim and options
- A diminished value appraisal: a written valuation of what the accident did to your car's resale value
- The crash report and the claim number on the at-fault driver's policy
For the appraisal, a formula figure is not market evidence. What holds up is a comparison of your car against Montana-market listings with and without accident history.
How to ask the at-fault insurer in writing
- Get the claim number and adjuster for the property-damage claim on the at-fault driver's policy. It is a separate claim from anything on your own policy.
- Write a short letter or email: the date of loss, the claim number, your car (year, make, model and VIN), that you are claiming diminished value, the amount, and how it was worked out.
- Attach the appraisal, the final repair invoice and the photos. Keep the originals.
- Ask for a written response, and if the insurer disagrees, ask for its own valuation in writing.
- Send it in a way you can prove, such as email to the adjuster plus certified mail, and keep a copy of everything you send and receive.
- Watch the 2-year deadline under Mont. Code Ann. § 27-2-207. An open insurance claim does not stop it.
You send the request yourself. If it needs to go further, that is a decision for you or your attorney. General information, not legal advice.