AAFES announces fuel prices for Sept. 29 - Oct. 5 Published Sept. 28, 2007 Mainz Kastel, Germany -- The Army and Air Force Exchange Service is adjusting gasoline prices effective Sept. 22 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 -- $2.979 Mid Grade -- $3.084 Premium -- $3.196 Diesel -- $3.199