By Veronika Bondarenko Over a 10-year period, a BMW will cost 25.34% of its value to maintain. While the decades-old jokes and debates usually relate to boat upkeep (Bring Out Another Thousand), a flashy car with expensive parts can be no less of a financial strain long after the initial purchase has been paid off. Maintenance costs are also not always directly related to the flashiness of the car itself — a recent analysis of maintenance and parts data by car resale platform ClunkerJunker found that cargo vans like Stellantis’ (FCAU) – Get Free Report RAM Promaster City and the Kia (KIMTF) R…