Truck emissions are increasingly requested in tenders, customer reports and internal comparisons. A practical planning estimate starts with trip distance and realistic fuel consumption.
Calculate litres first
Distance and l/100 km give the expected litres used. Real fleet data is better than a catalogue figure because payload, terrain, weather, speed and idling all affect fuel use.
Convert fuel into emissions
The litres consumed are multiplied by the selected emissions factor. Depending on the purpose, this can represent direct CO₂ or broader CO₂e.
Keep TTW and WTW consistent
Tank-to-wheel covers fuel use in the vehicle. Well-to-wheel also includes upstream fuel-supply emissions. Use the same boundary and factor source when comparing jobs.
Use g/t-km for transport efficiency
g/t-km relates emissions to tonnes moved and distance. Empty kilometres increase emissions without moving additional freight, so they can worsen the intensity of a job.
Consider emissions together with payload, loading metres