The increased demand for diesel, driven by the ongoing winter, is a key factor in the price surge, as many Europeans rely on heating oil.

In the past month alone, diesel prices have increased by 8.1 cents per liter, while SP-95 E10 prices have risen by 5.8 cents per liter.

Fuel prices have surged recently, marking the largest weekly increase since 2022, with diesel now priced at 1.699 euros per liter and gasoline at 1.781 euros per liter.

Since the start of 2025, fuel prices have risen significantly, reaching levels comparable to those seen in the summer of 2024.

In response to the rising international prices, the Association of Fuel Resellers (ANAREC) has urged the government to implement measures to protect consumers.

The price of Brent crude oil has climbed to over 78.60 euros per barrel, up from 71.70 euros at the beginning of the year, reflecting heightened concerns about supply due to geopolitical factors.

Since late December 2024, diesel prices have increased by 7 cents, while gasoline prices have risen by 5 cents.

Price fluctuations in the energy sector are primarily driven by investor profitability, independent of political decisions.

The recent price hikes are largely attributed to rising international oil prices, exacerbated by new U.S. sanctions on Russian hydrocarbons aimed at limiting Russia's revenue and military capabilities.

Cold weather in the Northern Hemisphere has further contributed to rising fuel prices, as increased demand for diesel for heating is observed in Central Europe.

As of January 1, 2025, the Portuguese government increased the ISP tax by 3 cents on gasoline and 3.4 cents on diesel, although it claims this will be offset by a reduction in the carbon tax.

The Ministry of Ecological Transition has reported that diesel and gasoline prices have been on the rise in recent weeks.