noun
fuel expenses; cost of fuel
Refers to the money spent on fuel, such as gasoline, heating oil, or other energy sources. Commonly used in household budgets, transportation, and business accounting.
今月の燃料費が高くなった。
This month's fuel expenses have increased.
燃料費の節約のために、エアコンの使用を控えている。
To save on fuel costs, I'm cutting back on using the air conditioner.
ガソリン代 is specifically the cost of gasoline for vehicles, whereas 燃料費 is a broader term that can include heating oil, kerosene, and other fuels.
Compound of 燃料 (fuel) and 費 (expense, cost).