BERLIN, Jan 31 (Reuters) - The exchange rate of the euro against the dollar is less of a worry for Germany's auto sector than that of the euro against the yen, German Economy Minister Michael Glos said on Wednesday. Speaking at a news conference in Berlin, Glos also said that German economic expansion could be stronger next year than in 2007. The government on Wednesday raised its growth forecast for this year to 1.7 percent from 1.4 percent.