Each train engine has base cost, shown in depot on the vehicle purchase tab and on the info tab in the train window. Base cost is shown '''doubled''' if [[Game Settings|fuel cost]] is set to '''Higher'''.  How often you pay this base cost determines the true cost of running an engine or vehicle: see [[Vehicle Aging]] for the full explanation. === Notes ===* Operating cost applies only to the engine, the wagons are (at this time) maintenance free. In the case of multi-engine train, the * The operating cost applies to each engine in a train separately and independently. There are no costs or discounts for double-heading, for instance: you just have to pay twice as much for using two locomotives.* Engines only cost money and resources when they are running. Not when stopped.