Powertrain system for a vehicle

A powertrain system for a vehicle, the powertrain system comprising:

• an internal combustion engine operable on a gaseous fuel;
• a gaseous fuel tank system having a set of gaseous fuel tanks for storing pressurized gaseous fuel, the gaseous fuel tank system being configured to be in fluid communication with the engine;
• and
• a compressor assembly for pressurizing gaseous fuel, wherein the powertrain system is operable in a first powertrain operational mode where gaseous fuel is supplied from at least one of the gaseous fuel tanks to the engine in a non-operational mode of the compressor assembly, and in a second powertrain operational mode where gaseous fuel from at least one of the gaseous fuel tanks is pressurized by the compressor assembly in an operational mode of the compressor assembly and supplied to the engine;
• wherein the powertrain system further comprises a controller configured to:
• predict an expected operational change of the powertrain system based on route information describing at least one route segment for an intended route of the vehicle;
• and,
• determine to control the compressor assembly based on the predicted expected operational change.