I have no insight on emission, but I have owned a couple of both T7 and T8 cars and my friends have owned quite a few together and what I do know is real life testing. And at no time, has non of these cars failed to start on e75 (winter e85) no mater the temperature... The ethanol calculation is also quite fast and very accurate, the cars never misfires or behave strange in any way and you can mix up the ethanol/gasoline mixture how ever you desire.
If you look at the Golf MultiFuel for example that one don't even start on pure e75 at +5°C, then the emission on cold start play a very small roll for the one not coming to work
Does it really? It depends on how you define good. In Sweden, car manufacturers were not forced to run emission testing on more than one fuel type (prior release of a model) when qualifying the engine if the car used multiple fuel types. Saab did their qualification (NEDC pattern) on regular petrol (naturally) but later it was tested in T7 by external institutes also on E85 with not so impressive results so either the cold start sequence is really poorly programmed by Saab from an emission point of view, or the system is not really suited for it. During normal driving conditions however, with normal engine tempearures (80-90°C) it works well.
