As of 2013, Daimler owns or has shares in a number of car, bus and truck marques including Mercedes-Benz , Mercedes-AMG , Smart Automobile , Freightliner , Western Star , Thomas Built Buses , Setra , BharatBenz , Mitsubishi Fuso , as well as shares in Denza , KAMAZ , Beijing Automotive Group , Tesla Motors , and Renault-Nissan Alliance .