The Fuel Station is a location in all games that allows the player to refuel.
Spintires and Mudrunner[]

Fuel station in Mudrunner
In Spintires and Mudrunner, Fuel Stations will automatically refuel all vehicles for free, up to their maximum capacity. Fuel Stations additionally have the ability to drain or fill add-ons manually, being the only way of resupplying them.
SnowRunner[]

Fuel station on Smithville Dam, Michigan
In SnowRunner, the player has to interact with the fuel station in order to refill. They can choose the amount of fuel to refill. Some fuel stations also supplies the fuel cargo type in a separate loading zone that are only used with certain missions and behave like all other types of cargo. Usually, the necessity of Fuel Stations are diminished as Garages and the Trailer Store can also fully refuel vehicles, and they only really come into play if refueling elsewhere isn't convenient.
In Hard Mode, Fuel Stations have area-specific refueling costs, alongside the fact that Garages and Trailer Stores no longer provide fuel, necessitating the use of free fuel provided in various tankers around the map and during missions.