Friday 23 June 2023

Porsche 911 996 ULEZ Compliance/Exemption Process


Porsche 996/986 ULEZ Compliance for London

What are the NOx requirements for ULEZ Exemption?

The ULEZ or Ultra Low Emission Zone is an area of London where you are charged for using your vehicle every day if it doesn’t meet certain standards. However the rules for these standards as applied to ULEZ are unclear and misleading if you look at the TFL website. It’s stated that cars have to meet the Euro4 standard for petrol and Euro6 for diesels which means petrol cars built after 2006 and diesels after 2015 comply. However this isn’t the full picture.

The actual requirement is that the vehicle only need to have Nitrogen Oxide (known as NOx) emissions at or below the Euro4 level of 0.08 g/km.
Porsche 986/996 ULEZ Compliance Exemption requirements
Porsche 986/996 ULEZ Compliance Exemption requirements

Cars older than 2006 can be classed as exempt if that is true although I’ve found it can be quite a battle with TFL to get that done. I've also added this info about ULEZ Exemption as a video on YouTube

Euro 4 emissions standards (petrol)

CO: 1.0g/km
THC: 0.10g/km
NOx: 0.08g/km

It’s very hard to find the actual rules and values that TFL apply but the petrol car Euro4 NOx level is 0.08 g/km so if your vehicle is lower than this you can apply to TFL to be marked as exempt from ULEZ charges. If your car isn’t recorded as Euro4 by DVLA then it probably will show as not compliant and you’ll need to contact TFL to get it changed. To do this you’ll need to contact the manufacturer of the vehicle to get something called a Certificate of Conformity to show the emissions data when it was new. For my 1998 Porsche 911 this was free but other companies may charge.

Porsche 996 911 ULEZ Exemption
Porsche 996 911 ULEZ Exemption

The Certificate of Conformity will show all the vehicle data and the key figure you're looking for is the NOx level which needs to be below 0.08 g/km which is the Euro4 limit. The other data is irrelevant for ULEZ purposes even if the car only meets the Euro3 or Euro2 standard overall.

With this data you can submit a request to TFL to get the vehicle exempted from paying the ULEZ charges. Be aware that you may receive several knockbacks denying the request as their staff appear to not understand the rules but persevere and eventually you should get the vehicle marked as compliant.

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