The term SUV has changed so much from when SUVs started hitting the road and so has their shape. We now have SUV crossovers, compact SUVs, and SAVs. But what does that mean? SAV stand for sport activity vehicle, so it is not a big SUV or a compact SUV. It is right in the middle and ready for any adventure. So why not explore in style? Which is exactly what you will do in 2018 BMW X5.