On this post I share a link to a dashboard depicting the fuel prices thoughout Brazil. The dataset used to generate the plots is provided by the brazillian government through ANP (Agência Nacional do Petróleo, Gás Natural e Biocombustíveis).
The dashboard is WIP and at the moment tries to address three questions:
The dataset is modestly sized, with information about 554 municipalities, 252 distributors, 25459 fuel stations, and for a period between 2004 and 2018.
Some of the plots regarding NGV fuel may seem incomplete for different states. I can only suspect that either these states have not sold NGV in the past, or the dataset provided by ANP is missing data.
Also, and since DIESEL S10 was only introduced in 2013, the respective plots only show data for the period between 2013 and 2018.