I tried the "snow mode" on a level bit of highway and found when its engaged you need to push the accelerator down a heap more than you normally would for the same acceleration in the "normal" (not snow mode) of driving. There is a stretch of road we drive on a regular basis each week where I have the cruise control set. There is this one slight bump (hill) in the road that lasts for about 200m and is a sweeping right hand curve, and in "D" with speed set, the Kluger drops 2 gears and revs the crapper out of the engine with a massive overshoot of the set speed just over the crest to maintain the set speed. Apart from that 1 hill the Kluger performs in cruise excellently (if thats a word). After my previous experiment with the snow mode, I decided that on the approach to this slight incline, on the above stretch of road, I would engage the "snow mode". It resulted in a much more gradual acceleration and the Kluger and it only dropped one gear to get up the incline instead of the usual 2.....didnt have the usual gross overshoot of the set cruise speed either. Not sure what it would do to fuel economy except that it does curb the "lead foot" action so I guess that must be good. The only real check would be to get the beast on one of those dynamometers, like I think they have at ultra tune, and check the economy guage readings whilst switching between the modes!