LOL.
Unlike the CX-9, the CX-5 must not have exceeded its weight loss objectives, so engineers did not end up with extra weight to add and so the CX-5 is just slightly louder than other CUV's (except for subaru, which is also light and makes the CX-5 feel like a lexus)
Mine is not as loud as a 2016 CR-V EX. A big reason I did not buy the Honda.