Audi dealers in China are demanding 28 billion yuan to cover losses over the past three years that they blame on the automaker adding too many distributors, potentially worsening a sales decline that saw BMW and Mercedes-Benz overtake the luxury brand last month. The dealers met Thursday in Sanya, China, and issued a statement saying their newly formed group would oppose Audi’s planned formation of a second joint venture in China until the German maker managed to reach 1 million in annual sales in the country.