Volkswagen saw sales jump 16% in December for its namesake brand, propelled by a big increase in China, Volkswagen's biggest market. Global sales rose to 567,900 from 487,700 despite the damage to the company's reputation from its scandal over cars rigged to cheat on diesel emissions tests. Results were boosted by a 29% jump in China. Sales in its home market, Germany, slumped 14% for the month. U.S. sales were up 20%. For the full year, sales rose 2.8%.