System and method for determining the energy requirement of a vehicle for a journey

A system for determining an energy requirement of a vehicle for a journey, the system adapted to:

• obtain journey data relating to the journey;
• obtain vehicle data associated with the vehicle;
• and
• the system comprising:
• a predictor mechanism to predict, using an energy prediction algorithm, a vehicle energy requirement for the journey from the journey data and vehicle data;
• an updater mechanism configured to adjust the energy prediction algorithm for the vehicle by:
• determining for each of a number of historical journeys undertaken by the vehicle, an error between an actual vehicle energy usage for the historical journey and a predicted energy usage derived using the energy prediction algorithm for the historical journey from historical journey data and historical vehicle data, each historical journey of the number of historical journeys being associated with a respective error of a set of errors;
• determining an aggregate error from the set of errors;
• and
• adjusting the energy prediction algorithm to reduce the aggregate error.