• I can confirm that the earliest engines pass the target that TFL has for the ULEZ, it's been documented by a few owners now. I'm in the process of doing it myself, but I've kept forgetting to post the form.

    The issue was that the Euro4 test didn't exist when the cars were in production, so they could never pass it (for obvious reasons).

  • The issue was that the Euro4 test didn't exist when the cars were in production

    Yeah, it's happily Euro 3 apparently, but the bigger engined versions later on did conform ok so I was hoping this would too.

    Ok - that's cool, thanks very much. Are you using the same certificate in the link above? TFL say to contact the 'Porsche Homologation Department', which is a bit of a reach to get to.

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