have a 2000 Mazda 6, it was one of the latest models and they've already released the new model. The question is, when I go to the MOT for the smoke test, what should the limit be to pass the smoke opacity test? They've been lowering it more and more in recent years, and I don't know if it's legal since I'm Euro 3, I think. I'm in Spain.
Thanks.

 

I did say I would come to this thread you started and read it... unfortunately
Can't help you but maybe someone from Spain knows the laws there and can respond to your question.