It was and it is still a moderate success in Europe. Sales have been steady for a couple of years now and 2017 seems to be mostly a repeat of 2016 which is great considering how the updated version carries over the previous generation Prius engine and is up against BMW 1-series, Audi A3, MB A-class which all offer several engine choices, diesels and have received more significant updates since 2011 than the CT. The lack of updates is also why I'm holding on to my old CT. There is no real reason to trade for a new one.
The CT still outsells the RX in Europe, while the NX is the sales champion. Perhaps the RX-L will be the break-through success that Lexus has been waiting for?