March 27 (Reuters) - Indian auto parts maker Motherson Sumi Systems Ltd (MSSL) said on Monday it had completed the buyout of Finland's PKC Group for 571 million euros ($619.4 million).

Motherson is now the controlling shareholder of PKC Group, holding 93.75 percent of PKC's outstanding shares and stock options. (http://bit.ly/2nYp6nk)

"There is a great synergy between MSSL & PKC and a complementary geographical presence to serve the customers in all regions," Motherson said in a statement.

Shares of Motherson, which have gained 12 percent since the deal was made public on Jan. 20, were trading slightly higher on Monday. ($1 = 0.9219 euros) (Reporting By Darshana Sankararaman in Bengaluru; Editing by Amrutha Gayathri)