Thing 1: New taillights are ugly. They remind me of that waffle-iron thing Pontiac did in like 1992.
Thing 2: Vertical grille slats still look ridiculous on a beautiful, low-slung car. The last grille was perfection. Naturally, they only punish you with the ugly grille if you pony up for an AMG.
Other than that, it is mostly flawless and remains probably my favorite car on sale today.