For Tihomir Stratiev and Dobrin Borisov rally "Sliven" 2017 is of great importance for maintaining the leading position in national rally championship. The two of them achieved their first victory in a round of the national championship in Tvarditsa and will be looking for a new good clasification. Marina Motorsport's crew will have to cope with strong national competition in the face of Miroslav Angelov / Nedyalko Sivov, Grigor Grigorov / Daniel Milenkov and Daniel Popov / Dilyan Popov, as well as the strong Turkish crew Ferhat Tanribilir / Kutay Ertugrul.

The other strong native crew who sent entry form was Grigor Grigorov / Daniel Milenkov from Grigorov Racing Team. They are ranked fourth in the overall standings of national championship, and in the last round in Tvarditsa they also recorded their first podium, finishing third. Grigorov has shown that he is very close to the leaders in the championship in Tvarditsa and will try to consolidate his upward form in the upcoming rally "Sliven" 2017.