Benz Group AG saw car sales slump in China in the third quarter as weak consumer sentiment in their biggest market weighed on luxury spending.Deliveries of BMW and Mini-branded cars fell 30%, the steepest drop in more than four years.

BMW and Mercedes-Benz have seen their sales and profits drop significantly in China since the beginning of the year.

German sports car maker Porsche on Friday posted a 29% nine-month sales drop in China, joining peers BMW and Mercedes in reporting weaker results in the country. The slump in China, the world's biggest car market,