With the advent of the energy reform, apps are now appearing that are similar to GasBuddy in the U.S. There are three that I know of, one (Gasoapp) is sponsored by Profeco (BBB), one (Guia Pemex) by Pemex for Pemex only stations and the third is Zenzzer.
All are available at the Google Play store. All three pretty much work the same. stations within in a specific range, prices, ratings by user, distance and routing to get to a specific station.
I haven´t downloaded any apps yet because my phone is full. I´m anxious to try it as we saw prices yesterday in Monterrey with a range of 35 centavos. May not sound like much but for the SUV a tank could mean a savings of 33 pesos or more. Like in the U.S., you wouldn´t drive miles out of your way but if you see a station on your route that has a better price I´m sure you would take it.
