Cleaner Vehicle Checker

You can help improve London's air quality by driving a less polluting vehicle, and we can help you make an informed choice when buying a new ULEZ-compliant car or van.

Our Cleaner Vehicle Checker below lists cars and vans that meet the ULEZ standards, as well as the nitrogen oxides (NOx) pollution they emit in real-world driving conditions - low, moderate or high - not just during compliance testing in labs.

Check if your vehicle is compliant with TfL's ULEZ.


Why can't I find my car?

It probably hasn’t been tested yet. New ratings are added to the Cleaner Vehicle Checker as more models are tested, so you might want to check again at a later date. 

Electric vehicles are not included in the Cleaner Vehicle Checker because they do not produce tailpipe emissions. Learn more about how you can choose an even cleaner vehicle by going electric

Why can I see two different NOx ratings for my car?

If you can see two different NOx emission ratings for your car with no distinguishable features, you will need to find out the Euro standard from the manufacturer or dealer to see which one applies.

  • the TRUE data included on the Cleaner Vehicle Checker covers ULEZ-compliant Euro 4 and 5 models
  • the EQUA data included covers Euro 6 models

Why does my car fit into two model year brackets?

The emissions data provided on the Cleaner Vehicle Checker has been grouped by Euro standards.

TRUE provide our Euro 4 and Euro 5 data and EQUA Index provides information for the Euro 6 vehicles.

Generally, Euro 4 covers model years 2005-2010, Euro 5 covers model years 2009-2015, and Euro 6 covers model years 2014 to present. However, due to the way emissions standards are phased in and manufacturers building to future standards before they are legally required to do so, the model year alone is not always enough to determine the Euro standard.

If you are unsure which rating applies to your vehicle, you will need to find out the Euro standard from the manufacturer or dealer to see which one applies.


About the information in this tool

The information contained in the Cleaner Vehicle Checker is for general information purposes only. We try to keep the information up to date and correct, however, we make no representations or warranties of any kind, express or implied, about the completeness, accuracy, reliability, suitability or availability with respect to the website or the information, services, or related graphics contained on the website for any purpose. 

Data is provided from the EQUA Index and TRUE, owned by Emissions Analytics Limited and the TRUE Initiative respectively.

Emissions Analytics Limited actively tests new vehicles and will keep ratings for the Euro 6 models up to date. To date, more than 400 vehicles have been tested, covering a range of makes, models and engine types. Where a specific model has not been tested, Emissions Analytics can show results for the nearest equivalent model. 

In addition to carrying out periodic roadside emissions testing programmes, the TRUE Initiative utilises the European CONOX database as well as other data sources to determine real-world emissions of in-use vehicles. Additional data collected may influence the ratings for the Euro 4 and Euro 5 vehicles on the Cleaner Vehicle Checker. The TRUE Initiative strives to maintain up-to-date emissions data for vehicles, ensuring that the TRUE Ratings reflect the latest test results available to them.  

In no event will the GLA be liable for any loss or damage including without limitation, indirect loss or damage, or any loss or damage whatsoever arising from loss of data or profits arising out of, or in connection with, the use of this website. 


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