上汽乘用车回应筹备大乘用车营销公司：未对外公布，以公告为准

Group 1 - The core viewpoint of the article is that SAIC Motor is reportedly preparing to establish a "large passenger vehicle marketing company," but the company has not officially confirmed this information and advises to refer to formal announcements [1][2]. - SAIC Motor's retail sales for the first half of the year reached over 442,000 units, reflecting a year-on-year growth of 5% [3].