Remember there are no guarantees as to make/model/type of vehicle so not something to count on. 4WD only helps with getting going and doesn't really help stopping and turning (wrecking the vehicle if you don't have snow tires may void insurance). I got a Jeep from SIXT at LAX earlier this year. It wasn't until I was on a dirt road in a national park did I realise it was 2WD only. I used to think all Jeeps were 4WD and were Rubicon trail-certified (might have been until the mid-'90s).