The evaluation of bids for General Motors Corp.'s (GM) German unit Adam Opel GmbH, should be carried out quickly, a person familiar with the matter told Dow Jones Thursday.

The German government is currently evaluating the bids, the person said, adding there is no fixed deadline.

General Motors Europe said late Wednesday Italy's Fiat (F.MI), Canadian autoparts maker Magna International Inc. (MGA) and RHJ International Ltd. (RHJI.BT) are in the running to take over its Opel unit. Germany said it will choose a preferred suitor early next week.

-By Andreas Kissler, Dow Jones Newswires; +49 69 29 725 500; djnews.frankfurt@dowjones.com