Distance and duration is the fastest route calculated using the Mapbox API.
Fuel usage is based on a figure of 33.1 litres of fuel per 100km.
Fuel cost is based on a figure of €1.24 per litre.
CO2 emissions are based on a figure of 59.25g/tkm and a reference load of 16t. (mean of groups 5 and 10 regional delivery and long haul reference loads)
Source: Analysis of VECTO data for Heavy-Duty Vehicles (HDV) CO2 emission targets.