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Message: <blockquote data-quote="jeffreychung" data-source="post: 16700" data-attributes="member: 16808"><p>Is the x6 sound proof that bad ? ? ? Also i had just travel from KL ---> Penang ---> Grik ---> KL ---> in my cousin new x6 . the sound proof is really bad so is the wind proof . . when the car speed is over 110km/h , we started to hear the wind sound .When the speed at over 160-180 sound like we are driving a proton car . DAMN it . We've made a call to Auto Sapura they told us X6 is using a single layer window . . I am not sure if its true . I told my cousin they are giving us excuses  . . Any1 know about this or experienced this . . Please let me know . . A 700k car shouldnt have this problem .</p></blockquote><p></p>