The X1 with larger nav can have hud display as an option
HUD isn’t available as a stand alone option on the X1. It is only available as part of the Technology Pack 2, which is bundled with the BMW Navigation Plus (biggest Sat Nav at 10.25”). You can’t get one without the other, unfortunately, so if you want the HUD (as I do) you have to have a bigger Sat Nav than the 8.8” system that now comes as standard. Equally, you cannot have the biggest Sat Nav without HUD.