The interior has a ton of parts taken from Chrysler, which a few people have mentioned. Its the same Uconnect/touchscreen nav setup as in my dad's new 14' cherokee summit. In fact, a lot of the parts in the car are similar. It's not "super tacky" but it definitely doesn't have the fit and finish of its true maserati brethren.
I drove one in December, its really nice to be behind the wheel of and the exhaust sounds AMAZING. Way better than any of the videos I've seen of the m3/m4 so far.
This video is way too long but just listen to the revs at the beginning, its pure sex. . .