if interior noise is your issue, then I suggest the audi or Lexus SUVs. Audi interior and trim quality is quite high and you should give the their Q7 a try.

BMW seemed to have focused more on sporty hums and the sporty feel rather than blocking out all of the noise.

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2007 4.8i Space Grey, 20", black nevada interior
All options with no 3rd row, rear entertainment,
handling pkg.