The guys over at youwager.com have made placed odds on which car manufacturer is most likely to have the next recall. While there's no actual study to back this up. It's still nice to look at. Although the list does seem like its pretty accurate. Hopefully the Regal isn't going to be part of any recall.
Considering how the 2011 Buick Regal is just a rebadged Opel with a different exterior. If they were going to have a recall for it they would've probably found the problem already by now since its been out in the UK for a while.