If you haven't heard about the new test method for fuel economy and emissions, then this may be something to read up about, as Snows reveal all...

Since the 1980's we have been used to having our emissions and fuel economy tested using the New European Driving Cycle (NEDC) but now times have changed. Please welcome, WLTP...

The European Union developed the Worldwide Harmonized Light Vehicles Test procedure (WLTP) to give both car buyers and owners a more realistic understanding of a car's performance, coming into effect on 1st September 2017.

Working in conjunction with WLTP will be an emissions test that also measures pollutants directly on the road - Real Driving Emissions (RDE) - which has been brought in to provide a closer representation of 'real world' fuel consumption and provide model specific values at the point of sale. This takes place on real roads, the RDE test compliments lab tests by measuring that a car delivers low pollutant emissions on the road.

"Everyday tests, realistic results"

Toyota, in particular, are a car manufacturer that has welcomed the change to WLT, as it follows their strong values in clean mobility. WLTP helps the movement driven by Toyota, towards a low carbon society, after the company spending decades researching how to make vehicles kinder to the environment and introducing hybrid technology.

Laboratory Tests for Passenger Cars
Laboratory Tests for Passenger Cars Explanation

So what's changed?

Due to the advances in vehicle technology and changes in driving conditions, the nearly 40 year old NEDC driving cycle test is no longer as accurate. As a result, governments have decided to replace the previous method of fuel consumption and emissions testing with a much more reliable procedure. Changes introduced by WLTP will include:

Test Cycle

​Dynamic tests which are more representative of real-driving behaviour

Cycle Distance

​23.25 kilometres long, over twice the old distance

Average & Maximum Speeds 

​Average speed is 46.5km/h (an increase of 12.5km/h) while top speed is raised to 131km/h

Optional Equipment

Additional vehicle options (impacting CO2 and consumption) are taken into account

Cycle Time

Test lasts 30 minutes, an increase of 10 minutes

Driving Phases

More dynamic phases: 52% urban and 48% non-urban

Gear Shifts

Each vehicle has different, rather than fixed, gear shift points

Test Temperatures

Measurements now taken at 23ºC (and CO2 values corrected to 14ºC) vs 20-30ºC.

What does this mean for me?

• From September 2017, all new model introductions will be subject to WLTP type approval and Real Driving Emissions (RDE) testing.

• From September 2018, all new registrations will need to comply to WLTP type approval.

• From September 2019, all new registrations will be need to comply to RDE testing. Light Commercial Vehicles (Category N1)

• From September 2018, all new Light Commercial vehicle model introductions will be subject to WLTP type approval and Real Driving Emissions (RDE) testing.

• From September 2019, all new registrations of Light Commercial Vehicles will need to comply to type approval under WLTP and all new registrations will be subject to RDE testing.

To find out more information about the introduction of WLTP and what this will mean for you, do not hesitate to contact us directly or make an online enquiry to receive further details: ​​

Contact SnowsMake an Enquiry

Snows has 45 franchised dealerships across the South of England, stretching from Plymouth to Guildford, and including the Isle of Wight. The Group prides itself on its reputation and dedication to delivering excellent customer service, and is rewarded by the fact that over half of its business comes from returning customers. With Snows, driving becomes an experience, rather than a chore.

Author: Sophie Taylor

Please contact Sophie Taylor using or 02380 707750 with all press enquiries.

Posted on 18/05/2018