5 November 2018, London
A new standard for measuring emissions, energy consumption and range has been introduced for all vehicle manufacturers. The WLTP test (Worldwide Harmonised Light Vehicle Test Procedure) replaces the NEDC (New European Driving Cycle) that has been used since 1992 and is designed to produce figures more representative of real-world driving. The two sets of figures are simply different ways of measuring the economy and emissions of the same vehicle.
Can I expect the achieve the new economy figures?
The test is designed to provide official figures closer to what drivers could achieve in the real-world, but the main purpose is still to enable comparisons between different vehicles. Fuel and electricity consumption will vary during real-world driving due to the huge number of variables involved; such as weather, traffic, equipment used, number of passengers on-board and so on, as well as driver behaviour. To learn more about how to maximise your fuel savings, watch our video.
These new WLTP figures are shown alongside the existing NEDC ones in the Technical Specification; this is because vehicle taxation is still calculated based on the NEDC figures, but it also enables you to compare like for like NEDC figures with older vehicles.
In the future, the new WLTP figures will be used for tax purposes for all newly registered vehicles and the old NEDC standard will be discontinued.
The new procedure changes the way lab tests are conducted, reflecting the improved capabilities of modern test-facilities. A real-world testing element has also been introduced for the first time, measuring actual emissions from the tailpipe using portable equipment.
If you’d like to know more about the new WLTP test: