re: Diminished value claim to new vehicle after being rear-ended

A note from your dealer saying how much value your vehicle has lost because of the bad Carfax won't work because the insurance adjuster will say that the dealer gave you a high figure sso he could buy the car cheap. Get a diminished value appraisal from a legit company. As to the amount of diminished value, if it was just minor damage, the DV could be just a few thousand but if there was frame or unibody repairs involved, the value could drop as much as 50%.