A. J. Cyr 
2012 Toyota Prius Hatchback Five 4dr Hatchback (1.8L 4cyl gas/electric hybrid CVT)
Prius Cabin Noise
 Bought a 2016 Prius V to travel around the US after I retire this year. Have been very satisfied with the fuel economy, but very disappointed in the road/wind noise in the vehicle at highway speeds. I find this annoying, loud noise, unacceptable, to try to drive 20 k miles around the country.  As it is, I would need ear protection to drive this 4, 5 or 6 hours a day on the highways.  Not a good idea when traveling with your wife.  I will attempt to install sound deadening mats or fabric to see if this will help to reduce cabin noise, but, the noise seems to come from the windows. Not sure if mats will help.  Also looking at other hybrids to trade up to. Too bad. Excellent mileage, but wicked bad cabin noise. Toyota should have put more effort in sound control in this cab when they retooled the model in 2016.