Like any emergency rescue vehicle, the X3 is fitted with a special roof-mounted alarm system, including a blue light, an electronic siren, and an LED display with the word NOTARZT ("emergency doctor"). Furthermore, there are two flashing lights are inside the boot, which when opened, provide sufficient warning to oncoming traffic.
Inside, the X3's cabin has been converted for medical use featuring among other things, a sturdy metal dividing frame between the luggage space and passenger cabin, a mounting for the radio device, which includes a power supply and a rest for the hand unit, as well as a charging point in the luggage area.