My TCH was built the last week in February in KY and I now have about 3500 miles on it. I have occasionaly experienced a severe shudder (almost like an engine dieselizing) on a few occassions. Most of this time it is very slight and happens only when starting from a complete stop. After the car is moving I can detect very little when the ICE starts if in EV mode. If I am on a downhill grade and start from a complete stop in EV mode, I never feel a shudder. Only when the ICE kicks in form the stop.