Free Traffic Legal Advice

If you're moving to Canada, I think you can safely ignore them because they cannot enforce in Canada

What vehicle? CAZ and ULEZ should be the same. Have you put on or removed a cherished plate recently?

It’s a 2002 Toyota Yaris Verso petrol that I bought as part of the scrappage scheme to become exempt from ULEZ (and is definitely ULEZ exempt in the TFL database)

From my understanding exemption is generally based on Euro 4 standard, but that didn’t exist before 2006, but they manually whitelist some older vehicles in their database.

My V5C lists emissions that seem to be slightly higher than the euro 4 standard: CO 1.02, HC 0.12, NOx 0.09

The important value being NOx, the euro 4 standard being 0.08 I think? So on that basis it should not even be ulez compliant?

Very confusing, and maybe at least a reasonable basis for appeal?

What answer do you get with this:

Pl post the PCN.

When will you be moving to Canada and for how long?

Then IMO you should include with your reps against the PCN the following:

The authority should note that you will be moving to Canada on *** for an indeterminate period. All correspondence initiated after ** May* to the following address:

Your name
*****
CANADA

They would be obliged to comply with this instruction which would be enough to put them off IMO if accompanied by reps which focus on your account i.e. being clear for ULEZ. If they did not, then IMO this would be improper.

* - this date should count back two working days for service. For example, if you were to move on Mon. 18 May then the effective date would be Thur. 14th May(Sat and Sun are excluded in the calculation).