My opinion agrees with this…
“The road to the summit is a well-maintained gravel road. It’s an easy driving without any serious difficulties for conventional cars, in dry conditions. However, after heavy rainstorms, potentially muddy conditions may prevent cars without AWD or 4WD from reaching the pass. Approaching the pass, the gravel and dirt road starts to wind, and with plenty of tight turns. The road to the summit is very steep, hitting a 12% of maximum gradient through some of the ramps. Starting at US-550 (Million Dollar Highway), the ascent is 23.17km (14.4 miles) long. Over this distance the elevation gain is 967 meters. The average gradient is 4.17%.”
However, I enjoy challenging drives.