试驾不要开音响，关注降档的异响，关注论坛的质量贴，也可以看以下网址
http://a.mp.uc.cn/article.html?uc_param_str=frdnsnpfvecpntnwprdssskt&client=ucweb&wm_cid=185644226359330816&wm_id=a0adfc154b4b4326a324dd9618d21fc2&title_type=1&pagetype=share&app=smds-iflow&btifl=100&wm_aid=1cda4ccd5f4b4573aa318e8b77923042