The disclosure includes embodiments for providing occlusion adjustment for an in-vehicle augmented reality system. A system may include a three-dimensional heads-up display unit (“3D HUD”) installed in a vehicle. The system may include a memory storing instructions that, when executed, cause the system to: display, on the 3D HUD, a first graphic that is viewable by a driver of the vehicle as overlaying the interested object when the driver is looking at the 3D HUD; determine that at least a portion of the interested object is occluded by an occluding object; turn off the first graphic so that the first graphic is not displayed on the 3D HUD; and display, on the 3D HUD, a second graphic that does not overlay the occluding object and visually indicates to the driver the location of the interested object behind the occluding object when the driver is looking at the 3D HUD.