Hawaii will allow for the recovery of diminished value as a third-party claim if you can prove the loss in resale value due to an accident not your fault; however, most insurance policies will exclude first-party diminished value claims. Chapter 431:10C
Richards v. Kailua Auto Machine Service, 10 Haw. App. 613, 622 (Haw. Ct. App. 1994)
The general rule in measuring damages is `to give a sum of money to the person wronged which as nearly as possible, will restore him [or her] to the position he [or she] would be in if the wrong had not been committed.
Courts have applied various measures of damages to personal property. D. DOBBS, supra, § 5.10 at 379; C. McCORMICK, supra, § 124 at 471-72; Measure and Elements of Damage, supra, § 2. But “[a]ll [of] the [different] measures [for damages to personal property] are merely `guides to common sense,’ and the question in each case is ultimately a question of fully compensating the [injured party]. Thus, the various measures should be adjusted as required to meet the goal of compensation.” D. DOBBS, supra, § 5.10 at 379 (footnote omitted).
Some courts have found that damages for tortious property damage to an automobile include costs of [corrective] repair and the difference in value of the automobile before the accident and after the repairs are completed, so long as the sum does not exceed the decline in market value [immediately after injury], and does not exceed the pre-accident [or pre-injury] market value of the vehicle.