Portuguese drivers should prepare for a significant increase in fuel costs next week, as gasoline and diesel prices are projected to climb sharply between August 17 and 23, according to a report from Contas Poupança.
The outlet, which tracks fuel price trends, indicates that the upcoming adjustment will be notably steep. This follows a period of relative stability, as a separate report from the Automóvel Club de Portugal (ACP) covered fuel prices for the prior week, from August 10 to 16, suggesting a shift in momentum for the coming days.
The price movement coincides with a government decision to increase the discount on the ISP (Imposto sobre Produtos Petrolíferos), Portugal's fuel tax, for both diesel and gasoline, as reported by RTP. This means the tax relief will be expanded, though the underlying market costs are still pushing prices upward.
The combination of rising international oil prices and the adjusted tax measure will determine the final cost at the pump. While the increased ISP discount offers some relief, it is not expected to fully offset the surge in wholesale prices, according to the reports.

Consumers filling up next week will likely feel the impact of this hike, which comes after the previous week's pricing was outlined by ACP. The exact per-liter figures were not detailed in the available summaries, but the consensus across the outlets is that the increase will be substantial.
For now, drivers may want to consider fueling up before the new prices take effect on Monday, August 17. The situation remains fluid, and further updates from Contas Poupança and other trackers will clarify the precise impact on household budgets.






