Diesel prices at Portuguese fuel stations have remained above the regulatory reference price for 42 consecutive days, according to data cited by Jornal de Negócios.
The prolonged gap between pump prices and the regulator's benchmark underscores a structural asymmetry in how retail fuel prices adjust to wholesale market movements.
The data indicates that fuel retailers are quicker to reflect increases in raw material costs than they are to pass on decreases.
This pricing behavior suggests that downstream margins have been supported by higher input costs, allowing stations to maintain elevated retail prices even as wholesale benchmarks fluctuate.
For consumers, this means the cost of transport and logistics remains sticky despite potential softening in global crude markets.
This development adds to a broader pattern of energy cost volatility affecting European consumers.