I did have a scary engine shaking on the very code weather day when start and the engine kick on. MY wife so scare to take the trip on that day. It was noisy and shake drastically. Also, when driving on the local street and start to slow down for traffic light we heard the buzzing sound coming...

I've noticed that when I start my CT on cold days and drive it out of the garage it takes about 3-5 minutes before the auto climate control engages (I typically have the auto temp at 25c). This is not very good since the windows start fogging up and it takes too long for the auto climate control...