I was up there on a dirt bike and was able to make it to the 7km before I turned around at a good sized washout. The road is partially washed out around the 3km mark where a high clearance 4wd is likely needed. The trailhead is at about 4km, from 4 to 5km recent efforts have been made to clear the brushed in sections. Many brushed in sections past 5km
The road is rough and takes a capable 4wd. There was a Jeep at 5km but that was as far as I could see a full size vehicle getting unless you don't care about the paint