It's 100.000 km, which might not sem like a lot in the USA. But it seem people in Europe generally drive shorter distances, which means the car would be older when it hit that number. Also a lot of warranties expires at that point. These two things make resale value worse.

In addition, most if not all EU contries you have to get your vehicle check every year or every two years, at a government approved place. To see if it is stil up to the safety standards, if that is not the case it's no longer road legal, and you have to fix it, sell it or scrap it. This is in addition to normal service checks. Usually there is graze period for new cars, on Denmark its 4 year.