Its a little heard for me to follow w/ the kilometers. What I see happening alot w/ carfax ALOTis when a dealer services the car and it had 89,000 miles. When it comes time for the tech or service advisor to input the info into the computer they will in most cases work from memory. So 89,000 becomes 98,000 easily. Compare the carfax and service history and if it seems that it is only one time where the miles were reported wrong and it looks like a logical mistake. It may be.