I just purchased my TCH on 5/4. I'm still well into my first tank of gas.

I was out of town most of last week, and I've only driven it on my regular commute now about 3 times. Other times have been driving for the sake of driving or taking the family somewhere because of the 'newness' of the car the kids want to drive it instead of the Highlander Hybrid we also got.

I'm not sensing what I would describe as a shudder at all. Sure you can pick up the vibration of all that metal in the ICE flipping on, but nothing that shakes the passengers. You can feel the gas pedal vibrate a bit, etc.

Not sure what you got goin on.