What is WLTP?

Posted 25 July 2018

What is WLTP?

In 1992, the New European Driving Cycle (NEDC) was introduced. Since then, this procedure has been used to determine the fuel consumption and emission values of vehicles.

From September 2018 a new driving cycle called Worldwide Harmonized Light Vehicles Test Procedure (WLTP) will be introduced to replace the NEDC. This laboratory test will also be supplemented by an emissions test that measures pollutants directly on the road: Real Driving Emissions (RDE).

The new test procedures will enable consumers to better estimate their vehicle's fuel consumption and emissions in the future.

The new testing procedure of WLTP is based on an approximation of the test conditions to real-world circumstances, which means that the values determined will also have a greater relevance to reality. Among the changes this involves are redefined, significantly stricter test conditions and higher speeds together with a substantially longer test duration (30 instead of 20 minutes). 

To obtain a more precise determination of CO2 emissions, the new test procedure includes not only standard equipment – as was previously the case – but also all optional equipment of a vehicle. This produces two values for each type of vehicle: the lowest and highest possible standard consumption value according to aerodynamics, weight and rolling resistance.



WLTP: AT A GLANCE. Find out about the relevant facts on the transition to the new WLTP.



WLTP: AT A GLANCE. Find out about the relevant facts on the transition to the new WLTP.

The BMW Group has now published revised fuel economy and emissions data for its entire range of vehicles in accordance with the new test procedure (WLTP). This means the full range of BMW and MINI vehicles sold in the UK is now fully compliant with the new test regime well ahead of the deadline.

Despite the more stringent test requirements, the BMW range has increased on average by just 8g/km*. BMW’s market-leading electric and plug-in hybrid range performed particularly well with the top-selling BMW 530e Saloon increasing by just 3 grams to 49g/km.

Fleet buyers can have confidence that the full range of BMW Group vehicles is compliant with the new testing requirements and that the figures supplied for all our vehicles are future-proof providing certainty in terms of future cost.