Originally Posted by yianni64
I think the old engine from the Z8 and M5 doesnt pass smog test anymore, that's why they stopped production on both of those like a year ago. I think.
The E39 M5 died along with the rest of the E39 5-series. The Z8 was always intended to be a limited run.
That doesn't mean the motor can't pass smog any more, but those cars would have died anyway.