My 2012 Prius v has only 21k miles on it. Even better; I live in the sun belt with no rust and road salt. I work from my home based consultant business.
The 2010 model V is equipped with 17 " wheels with less sidewalls to absorb shock and road noise. That alone will make the car ride harsher. The 2015 model 4 is equipped with 15 " wheels with more sidewalls to absorb shock so it's ride should be cushier, but as a trade-off won't handle as well. Congrats on your new to you Prius purchase.
Funny thing, it's not just the wheels. The steering feel, handling, and so on is different, on the 17" wheel models. At least 2010~2011 years. Turning radius is larger, a downside, but overall the car feels more "planted". Even with 15" snow tires. Yeah I think @PriusGuy32 bad impressions were mostly down to a particular set of tires. Maybe overinflated too? The recommended pressure for the 17" is a bit lower (see driver's doorwell decal). Even then yeah, the ride is firmer, you're on a first-name basis with all the speedbumps and potholes on your regular routes.
