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WLTP fuel economy and WLTP emission test

The Worldwide Harmonised Light Vehicle Test Procedure (or WLTP test) was created to give you a more realistic understanding of your vehicle's fuel consumption and CO2 emissions, compared with previous tests.

Introduction to WLTP

What is WLTP?

A WLTP test is conducted in a laboratory, where realistic driving conditions (defined by EU law) are mimicked to measure fuel consumption, emissions and electric driving range. When comparing WLTP values between different cars, you can expect greater precision from performance insights to assess real-world driving ability. These values should not be compared to NEDC metrics.

What is WLTP?

WLTP cycle and RDE tests

A WLTP test simulates an average car journey in a laboratory on a rolling road. This differentiates it from a Real Driving Emissions test (RDE), which measures pollutants released during real-world driving conditions. Both tests complement each other's purpose.

WLTP cycle and RDE tests

When was WLTP introduced?

The WLTP test procedure replaced the previous NEDC test and came into effect between September 2017 and September 2018 for all newly registered vehicles.

When was WLTP introduced?

Finding current WLTP test figures

You'll find the current WLTP test figures for Toyota vehicles listed on our Model pages, sitting under the Build section. Your vehicle's WLTP information can be found in the vehicle's Certificate of Conformity (CoC-Paper).

Finding current WLTP test figures

What does WLTP mean practically?

Detailed consumption and emissions data

WLTP provides emissions and fuel consumption data that are more realistic than before, allowing comparison of Toyota vehicles with other manufacturers’ cars tested with the same procedure, and between Toyota vehicles. Since WLTP figures offer a clearer representation of potential performance, they empower well-informed purchases.

Personalised vehicle consumption figures

The benefit of the WLTP test cycle is that it considers your car's personalised accessories, such as winter tyres or a sunroof, to create more realistic fuel consumption and emissions figures based on the configuration of your vehicle.

More accurate WLTP performance data

Since the WLTP has stricter testing parameters than the previous NEDC laboratory test, metrics from the two tests are unhelpful to compare. You'll find most WLTP car consumption and emission values appear higher beside NEDC procedure figures.

What is the difference between WLTP and NEDC?

The key difference between WLTP and NEDC is that WLTP test parameters are significantly more realistic in evaluating the real-world emissions impact, driving range and fuel consumption of a vehicle. Pre-2017 vehicles are advertised with certified NEDC values.

  •                                                               
                                                                  
    Introduction year
    Test duration & distance
    Maximum speed
    Driving phases
    Test temperature
    Impact of optional equipment

  • NEDC

    1980s
    Approximately 20 minutes, 11 km
    120 km/h
    2 phases: urban and extra-urban
    20-30ºC
    Not taken into account

  • WLTP

    2017
    Approximately 30 minutes, 23.25 km
    131 km/h
    4 phases*: low, medium, high and extra high
    23ºC, CO2 values corrected to 14ºC^
    Taken into account

    * plus ‘City’ for EV and PHEV
    ^ cold engine start

FAQS

Car emissions are tested because all new vehicles must undergo strict official measurement of their CO2 and air quality emissions before they are approved for sale.

The WLTP test cycle operates under strict conditions in a government-approved test facility, and is witnessed by a government-appointed independent approval agency in correspondence with EU law.

The old NEDC procedure was less representative of real usage conditions, so the measurements used in WLTP testing are much closer to vehicles' actual consumption values.

While WLTP testing offers higher accuracy in assessment standards, driving style and factors such as traffic, car condition, tyre pressure, load etc. may vary, so the actual results you experience may still differ from those measured by WLTP.

Yes, in fact WLTP is also used to measure substances such as carbon monoxide (CO), hydrocarbons (HC), nitrogen oxides (NOx) and particulate matter (PM/PN).

Electric vehicles and plug-in hybrids undergo dedicated WLTP testing to reflect their unique characteristics. In particular, plug-in hybrids will have to repeat the WLTP test several times, starting with a full battery and repeating the test until the battery is empty. Another assessment will be carried out with a completely flat battery, providing practical recommendation on the fuel economy real drivers can expect.

Useful link

For more WLTP information and guidance, please visit:
Learn more (Opens in new window)

Learn more about homologation standards

 

Further information on WLTP testing transparency according to the Regulation (EU) 2017/1151 as amended by 2023/443 Point 5.9 of Annex II of the European Union can be requested by contacting your local retailer.

All Toyota vehicles now comply with Worldwide Harmonised Light Vehicle Test Procedure (WLTP) standards. This new testing method obtains more realistic results in accordance with WLTP. The fuel consumption, CO and noise values are measured in a controlled environment on a representative production vehicle, in accordance with the requirements of European law published by the European Commission.

However, driving behaviour as well as other factors (such as road conditions, traffic, vehicle condition, installed equipment, wheels, load, number of passengers...) may affect fuel consumption and emissions data, and therefore actual results may differ from those measured.

Where to next

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