Its a good bit louder than my wife's '17 Q7. Maybe slightly louder than my old '14 Grand Cherokee. Not nearly as loud as my '09 Wrangler was.
Nice. I'm a JAG up at Fort Lee.
Last month I did 2 14-hour trips in the RR. Was great. I was getting around 19 mpg. It seemed to me that I got better economy around 70mph(which sucks cause I wanna go fasssttt).
I was very comfortable as the driver. Had my 1 year old in the back in his car seat and didn't hear any complaints...