American EV giant Tesla Inc. (NASDAQ:TSLA) witnessed a 31% jump in new car registrations in September in the European Union, marking a comeback from the drop in registrations throughout the year, according to data from the European Automobile Manufacturers Association (ACEA) released on Tuesday. What Happened: The auto industry body said that 31,555 new Tesla cars were registered in the EU, marking a growth of 31% from the corresponding period last year, thereby increasing the company’s market share to 3.9%. The rise in registrations, though significant, is not yet sufficient to make up for th…