The northeast was just pummeled with three back to back snow storms this past week and a half and was the first time I got to try out the IS250 AWD (2007 model) in snow. So I just wanted to compare my results with other owners of IS (any model is fine from any year).
Overall with my vehicle, I haven't had any problems getting stuck. Even when I intentionally dropped in the car into several inches of snow, it drove right back out. Through turns, the traction control goes off quite a bit (usually just flashing without the beeping) and goes through without a problem. I've test the car out with and without traction control and with and without the snow ECT button. The best configuration I found was to have both of these functions set to OFF. I personally found when any sort of sliding or oversteer occurs, the traction control corrects it, only to put you in understeer in mid-corners. As for snow ECT, it didn't do anything but slow your throttle response down. I guess this is only useful in EXTREME snow conditions. I then took it into large parking lots to test it further and I found through bends, even with heavy sliding, slight counter-steering would bring it back straight, feeling very composed. If anything, I found the brakes to be lacking the snow. The ABS tends to be too sensitive for my tastes. I had it go off in snowy roads non-stop unless I pressed the brakes VERY slowly. Compared to many other cars I've driven, this car's highly recommended in the snow.
Overall with my vehicle, I haven't had any problems getting stuck. Even when I intentionally dropped in the car into several inches of snow, it drove right back out. Through turns, the traction control goes off quite a bit (usually just flashing without the beeping) and goes through without a problem. I've test the car out with and without traction control and with and without the snow ECT button. The best configuration I found was to have both of these functions set to OFF. I personally found when any sort of sliding or oversteer occurs, the traction control corrects it, only to put you in understeer in mid-corners. As for snow ECT, it didn't do anything but slow your throttle response down. I guess this is only useful in EXTREME snow conditions. I then took it into large parking lots to test it further and I found through bends, even with heavy sliding, slight counter-steering would bring it back straight, feeling very composed. If anything, I found the brakes to be lacking the snow. The ABS tends to be too sensitive for my tastes. I had it go off in snowy roads non-stop unless I pressed the brakes VERY slowly. Compared to many other cars I've driven, this car's highly recommended in the snow.