I'll go with 2 things I don't like about my 5-BW after about 800 miles:
1) The interior is definately subpar. My last car was a jaguar f pace svr(it's a powerful SUV). That interior was *much* nicer. No comparison really. In fact the car is getting ppf now so I have a rental for several days, and honestly the Kia Forte rental they gave me(a car that I'm guessing cost 20 percent of the blackwing) isn't that much worse than the BW. It's definately not the interior of a 100k car. The seats are pretty good if you sprung for even the 2750 extra option(and obviously if you could get the carbon fiber seats, I couldn't), but the rest of the interior just isn't there. It just doesn't feel special in any way. The area where all that hard plastic is where they do the AC and controls in that area(below the screen by a good bit) is most pronounced as bad. And I thought the ceiling was alcantara or suede or something....but it's not(if it is it's a really low quality version that doesn't feel plush at all. The only high quality feeling alcantara type material on the inside is that top part of the inside of the doors).
2) I have a manual(so I don't know if the auto is different), but if you really want to hit it quickly, the car
just doesn't feel safe/stable in starting out. So on a trip I had gotten on the on ramp on interstate and thought ok this is a perfect time to accelerate from 10/15 mph to like 60 or 70 very very quickly. So I florred
it quickly in 2nd gear and once I did for a brief second the steering wheel felt very unstable(it twisted/contorted in a different direction) and the car itself swerved violently as it was trying to gain traction I guess. I anticipated this when stopped because of the AWD, but I didn't know if I was already going like 15 mph that wouldnt be enough traction to grip the road and accelerate quickly. In the F pace svr this was never an issue- I could floor it from 15 to 60 in such a situation and feel that rush with total stability. This car's specs say it should be a lot more powerful and have more torque than that f pace svr, but if I don't feel safe flooring it then what's the point? I'm afraid if I try that again I will lose control.....so in the end I end up going much slower and it ends up feeling much less powerful than the svr.
It has a number of good points, but those two are big. because honestly if you are paying 100k for a cadillac you want it to at least have a cool party trick(in this case that rushing feeling in your stomach when trying to accelerate hard), but if it's not stable enough to do that I'll end up taking it easier and the car thus isn't as meaningfully powerful as the 686.....