Power loss due to extremely low temperatures

Hello, this morning it had a good -6 degree. had to be free-crazen and ran the car by the way. When I then drove and direction Bundestraße I noticed that my fiesta had trouble to come on tours, unless I would have kicked him full but should not be with a cold engine. I used to drive the track more often in the same driving style but this morning nothing went, simply sluggish. also at the end of the week on the car he had had trouble to come on tours more than 15 0kmh lt tacho were not in it. normal white he always runs quite well for his 60ps. But I also have to add that the car was moved very little in the last few weeks, even a few days not even every day only 4km city traffic in the morning and evening to the Park&Right parking spaces and the engine doesn’t even get really warm. Does anyone know what? PS: spark plugs, oil change with filter was executed at the beginning september Greeting Jens