I am not a dealer, but just a simple car owner who has tried to trade his vehicle in for a new one. Here is my take on this new history impact feature. Sure, its new and no one at CARFAX wants to share how they are coming up with this impact number. If it truly were an accurate reflection of what the vehicle history impact had against the trade in value or retail value, I think it would seriously help to correct the biggest flaw with these type of reports. These type of reports, more often than not, create a false value of a vehicle. Take for instance the SUV I want to trade in. It was involved in an accident 6 months after I bought it new.(I rear ended a car doing about 5 MPH, after almost stopping)I needed a new hood,radiator,grille, lights, etc. There was no frame damage and the car has driven perfect from that time almost 3 years ago. Yet, I go to the dealer and they want to heavily penalize me because the CARFAX report says there was an accident? Because the buyer of a used car wants the car heavily discounted for an accident? The car drives perfect! I paid the deductible, the insurance paid for the car to be repaired, I have been and will keep paying insurance surcharges and now a hefty "accident deduction" off my trade in? This is the true problem here. Everyone is trying to heavily discount the vehicles value, not on the "impact of the vehicles accident history" but on the word "accident". I am not saying that this impact value that CARFAX has come up with is a true indicator of the vehicles +/- value, just that something like this needs has to be done to correct the monster that these reports create.