Complex sentence: In China, over 680,000 Mazda, including Mazda6 made between September 2008 and January 2016, are recalled due to faulty Takata air bags, an earlier recall of 280,000 Mazda 6 models made between 2003 and 2008 for a similar issue.
Split into simpler sentences: In China, over 680,000 Mazdas, including Mazda6 made between September 2008 and January 2016, were recalled due to faulty Takata air bags. An earlier recall involved 280,000 Mazda6 models made between 2003 and 2008 for a similar issue.