港股汽车股集体走低，广汽集团跌超4%

Group 1 - The core viewpoint of the article indicates a collective decline in Hong Kong automotive stocks, with significant drops observed in major companies [1] Group 2 - GAC Group experienced a decline of over 4% [1] - Li Auto saw a decrease of over 3% [1] - NIO and Xpeng Motors both fell nearly 3% [1]