BERLIN - Italy's Fiat and Canadian supplier Magna International must significantly improve their offers for German carmaker Opel, Economy Minister Karl-Theodor zu Guttenberg said on Wednesday.

Guttenberg said he expected no agreement on one preferred Opel bidder at a government meeting later on Wednesday.

Guttenberg also said the government needed more details on a Chinese bid for Opel, which was currently only two pages long.

(Reporting by Gernot Heller)