Ill make some personal comments being more of and old car bmw fan rather than new ones
.
The 8 proportions look very good.
Front stilling not liking it at all. Headlights more specific i get the image of the ford mondeo. Kidney grills very disappointed in the design- hideous in my eyes.
Front bumper a lot of styling, to busy not good in any way, just plastic shapes anybody can do.
On the back i like the the shape, the taillights.
Rear bumper is to busy with shapes. It is plastic, can be made easily any shape.
Adding so many shapes is like trying to please to many people and loosing personality.
Interior i prefer the 6 over the 8. Dash lines are not a good design, dials ....its nothing racing or sporty looking at them, steering wheel to many buttons on a boring layout.
Center console i see range rover like type.
Conclusion great looking shape, disappointing details and interior.
This is just my opinion formed looking at media information.
I am sure in real life the car looks a little better due to enthusiasm