File picture shows a German car manufacturer Daimler's characteristic Mercedes-Benz star on a snow covered vehicle in Bucharest February 10, 2012. German carmaker Daimler said on October 25, 2012 it aimed to improve its operating profit margin in 2013, albeit not as much as initially planned, in a market that has been growing tougher. The profit margin at Daimler's Mercedes-Benz Car unit was 7.8 percent in the first nine months of 2012. Picture taken February 10, 2012. REUTERS/Radu Sigheti/file (ROMANIA - Tags: BUSINESS TRANSPORT) Published: Říj. 25, 2012, 8:55 dop. | Foto: Reuters