With diesel bans spreading through Germany cities, 71% of the 51,500 used cars registered in Ukraine last month were diesels. Volkswagen, Opel, Audi and BMW accounted for about half of the imported used cars. Further depressing prices of Germany’s 15 million diesel cars, manufacturers are offering trade in deals, offering new, lower emission for older models. In coming years, diesel bans are expected to take effect for the city centers of Athens, Copenhagen, Paris, and Madrid.