Sebastien Loeb of France won the Rally Bulgaria on Sunday to clinch his fourth victory in this season's world championship. The reigning six-time world champion led the 354-kilometer all-asphalt rally from beginning to end and finished 29.5 seconds ahead of his Spanish teammate Dani Sordo, who was second in a Citroen C4 car. The final day saw a tense battle for second between Sordo and Petter Solberg of Norway, who was also driving a Citroen. Solberg finished third, 6.8 seconds behind Sordo. French driver Sebastien Ogier finished in fourth place to secure the leading four positions for Citroen -- the best world championship result for a carmaker since Toyota posted a similar result at the 1993 Safari Rally. Finnish pair Mikko Hirvonen and Jari-Matti Latvala, who were both driving a Ford Focus, came in fifth and sixth respectively Loeb's victory saw him extend his lead in the overall standings. 