Noisy? That is one thing that I love about my HCH, it is much quieter than a regular Civic and many other small cars. Drive some other cars and see. I drive new cars 3-5 times a week moving them from dealer to dealer and I find my HCH very good compared to others. Could it be made more quiet? Sure it could, but there would be more weight.
The surface of some roads cause a great deal of noise compared to other surfaces. I suppose there would be some tires that would help. Maybe you need to get a Chevy Silverado truck or a Cadillac if you are after noise. Both are very quiet, maybe a little more than the HCH. Now talk about noise, my 2001 Honda CRV is noisy, but that is another story.