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EIR - ULEZ emission standards [Aug 2023]

Key information

Request reference number: MGLA070823-3660

Date of response:

Summary of request

Your request

Provide the ULEZ allowable emission parameter figures, in order that I can make empirical evidential comparison with my vehicle’s recent MOT pass emissions figures, in order that I can determine if vehicle is demonstrably emission non-compliant. 

Our response

As noted on the Transport for London website, to meet the ULEZ standards your vehicle must meet the required Euro standard for your vehicle and emission type.

The ULEZ conformity standard for positive ignition (petrol) engines is that the vehicle does not emit more than 0.08g/km nitrogen oxides (NOx) on the type-approval type 1 test.

These emissions are measured at the time the vehicle is approved for sale in Europe. That level of NOx emission is equivalent to Euro 4.

If you have any further questions relating to this matter, please contact us, quoting 
reference MGLA070823-3660.

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