LONDON (MarketWatch) -- Porsche Automobil Holding de:pah003 said it's finalized negotiations for a fresh 10 billion euro ($13 billion) credit line, that can be extended to as much as 12.5 billion euros in coming weeks. "In the wake of the extremely difficult global economic environment and the turbulences in the bond market, banks needed additional assessment, thus resulting in a need for extra time. In addition to that, the new consortium includes banks that so far not have been counterparts of Porsche with respect to credit lines," Porsche said. There are 15 banks in the consortium.