Berlin - The heads of German carmaker Opel are meeting Monday with German Economics Minister Karl-Theodor zu Guttenberg, to discuss a survival strategy for the ailing General Motors (GM) offshoot.

The meeting in Berlin includes GM's European head Carl-Peter Forster, Opel's Chief Executive Hans Demant and the head of the workers' council Klaus Peter Franz.

Opel had previously said the manufacturer needs 3.3 billion euros in state aid. Over the weekend however, Guttenberg said many questions remained unanswered.

In the coming days, the federal government is due to continue discussions with those German states where Opel has plants.

State guarantees and credits are both being considered.

German Chancellor Angela Merkel has previously said state assistance could be considered once Opel presents a viable strategy for the future. (dpa)