Sotnikov covered the distance of 337 km in 2 hours 58 minutes 47 seconds.
Another KamAZ-master crew, led by Andrey Karginov, finished second.
The third place was taken by the Belarusian Aleksey Vishnevsky, representing MAZ Sportauto.
Earlier it was reported that Sergey Vyazovich won the third stage of the Dakar in the category of trucks.