Actually, the road noise annoyance appeared from when it was new....Buick and Cadillac thru eons have been known as "sofas-on-wheels"...And with whisper-quiet interior....The only time interior is quiet is when driving over black asphalt having no sand/gravel particles exposed....By comparison our little 2000 Nissan Sentra is "whisper quiet" driven over any surface !!!....See additional complaints ....