Whilst I don't have stats on hand, it's FAR more likely in your state for a plea bargain than in the UK, since that's the way each legal system is structured.

So, in the UK, you can pretty much guarantee you're going to be in trouble. In the US, there's a reasonable chance you'll get off.

That completely changes the risk balance judgement you make before you go and drink-drive. (obviously that's speculation, but I think it's a reasonable statement).