The wife's 1 Series has a start button.
Put the "key" in (which is a fat credit card thiny) and push the start stop thingy on the dash.
Pointless I think.
Plus, confuses the hell out of me.
I use it more than I use the Zed, so I get in the Zed, put the key in they try to press the non existent button on the dash!
Or... WORST than that... first time I drove into a car park, the barrier said "Push button for ticket" so I pushed the one on the dash and stopped the car