Earlier quoted context omitted.
> Your statement would be true if test performance varied from real-world performance due to environmental factors, but that's not the case. ..or due to engine temperature, speed, gear, gas pedal position and tons of other variables WHICH IS the case. That's why emission requirements are (and must be) test-specific.
I'm sorry but you're wrong, and since I know you read my comment (you quoted it) it almost seems like you're deliberately wrong. Yes, testing varies from the real world based on a number of factors. Environmental, driving style, etc. And the current tests don't care about that, which is a completely separate problem . The problem that VW got in trouble for is specifically designing their cars to cheat on the existing…
Nope. When doing business, the only thing that counts is formal, verifiable spec. Crying "You have cheated since I wanted somehing else" should be irrelevant in any country that honors rule of law.
> specifically designing their cars to cheat on the existing test.
Test is a predicate. It can pass or fail, but you can't cheat it.
> actively circumvent the purpose of the test
Hmm, that's probably closest to something I can accept as an argument. Nice. But to circumvent the purpose requires an actual purpose. If the purpose is formal, it's the test itself. And if it's not formal, then it's IMO impossible or very hard to prove that it has been circumvented.