汽车服务板块12月23日跌1.95%，德众汽车领跌，主力资金净流出3774.42万元

Group 1 - The automotive service sector experienced a decline of 1.95% on December 23, with 德众汽车 leading the drop [1] - The Shanghai Composite Index closed at 3919.98, up 0.07%, while the Shenzhen Component Index closed at 13368.99, up 0.27% [1] - A detailed table of individual stock performance within the automotive service sector is provided [1] Group 2 - In terms of capital flow, the automotive service sector saw a net outflow of 37.74 million yuan from main funds and a net outflow of 18.17 million yuan from speculative funds, while retail investors contributed a net inflow of 55.91 million yuan [2] - A detailed table of capital flow for individual stocks in the automotive service sector is included [2]