Some VX's have an inherent problem with the windows binding. There have been members that have had their window tracks modified, fixed and or replaced. While others have had no problems whatsoever. I (knock on wood) am of the lucky ones. I do notice the windows getting slow once in awhile especially when it's cold out but, solve it by using a quality silicone spray in the window tracks. (If you have window tint, make sure to let it dry before rolling up your windows or risk having your tint lossen at the edges)