Knock on wood, nothing major.

A battery at about 100k miles. And the rear air springs (air bags) at 120k miles. The battery was about $600. Next time I will do it myself. I bought the bavarian technical cable that can register it. The airbags I did myself. Very easy job , about an hour and no special tools. It cost about 400 for the pair.
The I only other thing is regular maintenance.
brake pads every 35k, very easy to replace.it will Need rotors next time. I also change the oil and filter every 7500 miles since New. Spark plugs at 100k miles. 6 of them are easy, the last 2 are a PIA. Coolant replacement at 100k miles. And again at 129k miles when I did the water pump. All in all not bad. We'll see about the AC.

It's been a great car and driven very aggressively. The V8 and sport package make it enjoyable.