NAPLES, Italy — Gas coupon prices for diesel fuel for November will increase, while the price for unleaded fuel will remain the same as in October, a U.S. Navy official said.

The cost for a 100-liter booklet of diesel increases from $87 to $92, the first change in diesel prices since August, said Bart Di Muccio, manager of the Tax-Free Office, which administers the program in Italy.

The cost for a 100-liter unleaded-fuel coupon book remains unchanged at $92, he said.

Though the industrial cost for unleaded fuel decreased, the tax-free office had to maintain its coupon price because of the weak dollar-to-euro exchange rate, Di Muccio said.

Each month, the Tax-Free Office sets prices for fuel coupons by calculating changes in the barrel price of fuel, fluctuations in the currency exchange rate between the U.S. dollar and the euro, and any gains or losses the Navy Exchange and Army and Air Force Exchange Service incurred in the previous month’s sales.

U.S. and NATO servicemembers serving in Italy have seen a steady increase in fuel prices as the year has passed, from January prices of $66 per 100-liter booklet for unleaded and $75 for diesel, to the November cost now of $92 for both.

There are no fuel stations to fill up private vehicles on bases in Italy, so customers buy the booklets from Navy Exchange or AAFES outlets, and can redeem the coupons at any Agip or Esso gas station in Italy.

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