2015 with KDSS here. No real vibration issues in general. I did have a few temporary instances of vibration every now and then for different reasons. Here's what to look for:

1. Wheels/ tires, brakes and bearings: could be defective, unbalanced, or worn out. Unlikely at low mileage, but worth looking into. Bad rotors or brake pads can also cause vibration, especially while braking. IMO 90% of vibration issues are somewhere here

2. UCA/ LCA bushings: my LCA bushings wore out at 70k km. it did start some vibration for some time, followed by occasional 'clunks'. You can replace the OEM bushings without swapping the whole LCA, but Toyota will not tell you this

3. Suspension issue: Again, unlikely at low mileage. A horribly worn out or blown damper/ spring will feel like you're driving a bouncy sponge. Visually inspect the shocks for leaks.

4. Alignment: Needs to be DONE RIGHT by someone who knows what they're doing. A bad wheel alignment can cause vibration or it pulls to the sides. Hitting a curb, offroad use...etc. can throw off the wheel alignment

Good luck!