I found out the hard way when I bought my Focus. That was a really bad winter here in the N.E. We had one major snow storm after another, I am still stumped how bad this car is in snow, unless I put snow tires on all fours.
The Focus is just a rebadged and naturally much improved Ford Escort. But I remember my 84 Escort, with all season Michelins, that car was a tank in the snow.