WLTP
Published 8 November 2026, 22:53
WLTP — Worldwide Harmonised Light Vehicles Test Procedure (worldwide test procedure for cars)
A method of measuring a car's fuel consumption and CO2 emissions that has been compulsory in the EU for new cars since September 2018. It is closer to real-world driving than the earlier NEDC, so its figures come out higher. In Portugal, ISV and IUC depend on these figures, and the tax tables have separate, higher thresholds for WLTP.
Where you come across it. Car documents (COC, DUA), working out ISV and IUC, sale listings.
The same car “emits” more under WLTP than under NEDC. Only compare figures from the same procedure.