There’s no doubt that when BMW promises, it delivers. Last year we reported from the Paris Motor Show on the unveiling of the Concept X1, which BMW promised to have to market in 12 months. And, sure enough, one year later here it is: BMW’s first compact SUV (essentially it’s an X5 shrunk to a more city-friendly size) with a choice of two- or four-wheel drive and the first in the X series to have Auto Start-Stop...