Decoding WLTP

Need to know about WLTP and RDE? Watch Renault’s useful guide to the new testing procedures.

The New European Drive Cycle (NEDC), previously used to determine fuel consumption and CO2 figures for new cars, has been replaced by the Worldwide Harmonised Light Vehicles Test Procedure (WLTP), which is designed to better represent ‘real-world’ performance.

The WLTP test aims to offer a more representative fuel economy figure thanks to a more stringent testing regime. Firstly, it will take into account optional equipment fitted to cars, such as bigger alloy wheels, a sunroof, etc. Although the tests are still conducted in a laboratory, they now include a variety of driving phases, braking phases and acceleration, which emulate real-world driving. For a certain car type, each powertrain configuration is tested for the car’s lightest and heaviest version.

For light commercial vehicles, WLTP testing procedures will be introduced from September 2019.

What is it?

From September 2019, all new cars will be subject to Real Driving Emissions (RDE) testing. RDE will complement laboratory tests by measuring pollutants in real conditions on the road.


The car is driven over a wide range of different conditions, with equipment installed on the vehicle to verify that levels for pollutants such as NOx are not exceeded.


“At Renault, we are committed to making the process as transparent and easy-to-understand for our fleet customers,” said Head of Fleet and Remarketing Mark Dickens. “Consequently, this film has been produced explaining what the changes mean. And of course, we will be consulting with our customers through the next few months so they can be confident of exactly what they are getting with any Renault car or van.”

WLTP: Renault’s Position

Bradley Gooder, WLTP Project Leader, Groupe Renault

“Given the environmental challenges, the EURO standards that regulate vehicle’s polluting emissions are changing at an unprecedented rate. To meet these challenges, Groupe Renault’s combustion engines will benefit from new technologies that reduce polluting emissions. Our customers will benefit from a renewed engine range with higher performance levels and optimised consumption.”


“To meet the EURO 6D-Temp standard that is more representative of real driving conditions, all Groupe Renault diesel engines will adopt an emission control strategy including Selective Catalytic Reduction technology which works with an injection of AdBlue®, whilst the new direct injection petrol engines will benefit from a particulate filter, also known as a ‘GPF’. Groupe Renault is further supporting the change in emission standards with a new, more attractive range positioning.”

Position of the range

Renault has recently announced a new line-up for its Clio, Captur, and Mégane ranges, with the option of three easy to understand trim levels – Play, Iconic and GT Line – available on each model. Scenic will also benefit from a new simplified range comprising of Play, Iconic and Signature trim levels, whilst Koleos will be available in Iconic and GT Line. The new line-up symbolises Renault’s EasyLife philosophy – simplifying choice and improving specification whilst offering an extremely visually appealing vehicle at every price point.

The new line-ups provide desirable comfort, convenience and styling features whilst simplifying price walks. The new range line-up enables EasyLife for our customers with a simple choice of models that offer enhanced looks, specification and value, representing a saving compared to its equivalent outgoing version.


Customers looking for more information can visit: www.wltpfacts.eu