2011 Camry Vibrates during acceleration?

I test drove a 2011 Camry V6 yesterday. I like the car, its clean, no visible rust, and performed very well during my test drive.

The one thing I did notice is that whenever I was accelerating there was an obvious vibration. It went away once I reached the desired speed and was just maintaining a set speed.

It happened throughout the range of speeds, not just within a certain range.

I've found info online about the 2012-14 models having problems with torque converters, but no definitive answer on whether the issues affected the 2011 models. I'm also finding a lot of info that suggests it could be a bad CV axle.

The car is a good price and would fit my needs so I'm willing to buy it and spend a bit of money to fix it if I know for sure what the problem is.

I'm trying to arrange the details to take the car to a mechanic for an inspection and diagnosis before I commit to buying it.

I'm curious what the Toyota experts on this forum think. Did the 2011 model have the same torque converter problems? Is a bad CV axle sound like a possible source of this? Is there something else that I should have the mechanics look for?