Get a set of dedicated winter tires. And for petes sake don't mash the throttle!! I can't tell you how many times I've seen that uphill, on an icy bridge.
With the right tires it will be fine.I drive RWD Mercedes all winter long including a 6.9 from time to time,just don't get on it when turning onto another street or you may slide into things.
I agree with nutz; its not all about the car , and definately lots about the drivers skill.
Put an egg between yer toe and the gas pedal.............
4WD will get you down the road faster, but you still cannot stop any better than any other car.
And what are you thinking of taking a beautiful Benz out in the snow for anyway ?? get a beater ........ say a 300D ...... oh , right , thats a benz too ..... LOL .
http://www.youtube.com/watch?v=i6VDE55pXR0
Someone already posted what AWD with traction control and ABS can do when it does have brainless driver behind the wheel.
In my years back in Poland I've been driving professionally with no ABS, no traction control, no chains (!) and no air bags.
Very often road crews took 3 days to plow main city streets.
The people have been friendly and always helped to push.
Bottom line >>>> it is about 3/4 up to the driver.