It's not the performance varient just all wheel drive as the main consideration for purchasing had been
1) low cost, it's electric It's rubbish as I love the Sound of a decent petrol engine so was only trying it out originally to scratch the itch. It has free supercharging which is a gimmick but been Handy. Also the car was dirt cheap, cost only around 40k (though it was around 5 years old when I purchased it) and whilst I am sure it has suffered depreciation has a long warranty, has cost zero tax, low insurance and zero running costs So far. Not bad.
2) most importantly range, apparently the non performance Versionsnummer got longer range so that made sense. Still pulls well enough and even though I think it's very limited as an all round package I have to give credit to it being great in the snow and makes going skiing etc easy as you can put one seat down and still go with friends etc.
As said before when I'm back in Switzerland and have more time in the new year im going to start a thread up of what I has, what I currently have and also to make sure I make good choices as to what's next on the list.