AAFES Announces Fuel Prices for Jan. 12-18 Published Jan. 10, 2008 Mainz Kastel, Germany -- The Army and Air Force Exchange Service is adjusting gasoline prices effective Jan. 12 based on the current weekly U.S. Department of Energy average price plus incremental costs associated with providing gasoline overseas. The DoE average price for unleaded grades of fuel and diesel increased. As a result gas prices for Germany will be as follows: Regular -- $3.293 Mid Grade -- $3.369 Premium -- $3.520 Diesel -- $3.785