Lisbon, Aug. 28, 2026 (Lusa) - Diesel is expected to fall by around six cents a litre and petrol to rise by one cent a litre next week, according to estimates from the National Association of Fuel Retailers (Anarec).

The estimates, provided to Lusa and based on Thursday's closing prices, point to a 6.0-cent-per-litre fall in diesel and a 1.0-cent-per-litre rise in petrol.

Based on the average prices per litre of petrol and diesel on Thursday, as calculated by the Directorate-General for Energy and Geology (DGEG), the average price of regular diesel is expected to fall to €2.011 per litre, whilst that of regular 95-octane petrol is expected to reach €1.999 per litre.

The final average will only be confirmed at the end of the day and may still be subject to change due to developments in international oil prices; the final price at the pump may vary by petrol station, brand and location.

An update to the discount on the Tax on Petroleum Products (ISP) may also alter the forecast figures.

Fuel prices continue to be affected by the war in Iran, geopolitical tensions in the Middle East and the resulting closure of the Strait of Hormuz, through which 20% of oil and natural gas trade passes.

At 9:10 a.m. Lisbon time, the price of Brent crude, the benchmark in Europe, had fallen by 0.61% to $89.15 (around €76.50) per barrel, whilst West Texas Intermediate (WTI) crude, the benchmark in the US, had dropped by 0.63% to $83.00 per barrel.

JO/ADB // ADB.

Lusa