FRANKFURT, Germany — Continental AG, the auto parts and tire maker, lifted its full-year outlook after revenue soared 38 percent in the first half of the year as market conditions improved, the Wall Street Journal reported.

Revenue jumped to about €12.5 billion (US$15.7 billion) in the first six months compared with €9.1 billion in the same period last year, WSJ reported.

Continental is due to release detailed earnings for the second quarter on July 29.

"Based upon these preliminary results...we believe that an increase of approximately 15 percent in consolidated sales over last year's figure of close to €20 billion is being realistic for 2010," Continental Chief Executive Elmar Degenhart said in a statement.