STOCKHOLM, Jan 2 (Reuters) - New registrations of Tesla cars in Sweden increased in December from a year earlier and the car maker's market share grew, industry data showed on Tuesday, despite union action against the company hampering imports.

Data from Swedish auto industry association Mobility Sweden showed 1,789 new Tesla cars were registered in December, up from 1,645 in the same month of 2022. The U.S. company's market share grew to 6.1% from 4.6%. (Reporting by Anna Ringstrom, editing by Terje Solsvik)