The "Preço Combustível Portugal" extension is designed to assist users in locating the lowest fuel prices based on brand, district, and municipality. This tool is compatible with Google Chrome and Opera, providing an intuitive interface that streamlines the search for affordable fuel options.

Key features include constantly updated fuel prices, the ability to filter results by brand, district, and municipality, and automatic saving of filter preferences for ease of use. Users can select their preferred criteria and quickly access the lowest prices, with the option to view the fuel station's location on Google Maps by clicking on the station's name.