Global
Courier Land emission factor trends — Global
"Across the global courier landscape, the courier_land emission factor for diesel delivery vans (up to 3.5 tonnes) per kilometre is showing a downward trend. UK Department for Energy Security and Net Zero historic data indicate the factor fell from about 0.2690 kg CO2e per km in 2015 to around 0.2316 kg CO2e per km in 2024, a decline of roughly 14%, reflecting fleet renewal with more efficient engines, improved route optimization, and broader decarbonisation policies in freight. As the IEA notes, 'improving energy efficiency and electrification of road freight are critical to reducing emissions per kilometre' (IEA, 2023), while UK DESNZ adds that 'emissions per kilometre are falling as fleets modernise and adopt cleaner technologies' (UK DESNZ, 2024). Given the all-geography scope, these UK trends suggest similar improvements may occur globally as fleets turnover and cleaner technologies proliferate."