Shake at cold start
I have an 2014 Jeep Compass 2.0L automatic. It is on 1500 miles only.
When I cold start the car, the engine shakes a bit at park or neutral.
Nothing while drive. Also the idle is stable, no up and down on gauge.
It works normal when its warmed up.
I asked to my dealer, told me that this can happen if I use premium gas.
In my country(Turkey) we have two kind of fuel, one is 95 octane( regular, it makes 91 octane in US) and 97 octane(premium)