To be pedantic, it was not an official recall. PSA replaced it with an updated unit under warranty IF you were to face the issue within the warranty period. The issue was discovered by owners after crossing about 50k - 60k kilometers.
That's the sad part as there were many owners who didn't do that mileage within the warranty period.
It was a BMW-PSA joint venture project from 2006. The engine did have a recall for a timing chain and tensioner issue (both parts were designed by BMW, they had issues with Timing chains in their diesels and other petrol engines as well from that era, most famous was the N47).
The engine was a good design; lightweight, compact, had good low down torque, made good power, smooth and economical for the power outputs it offered in various tunes. On the RCZ-R, It was tuned for 270hp and it had the highest HP per Litre ratio of any production car, until the Yaris GR came along about 5 years later.
The main flaw being that the piston rings were fragile in the earlier years and gave way very quickly. Similar issue to what the Honda Fit GP1s faced. They resolved the issue with better quality rings on the later THP engines.
How bad is the oil burn in yours? Does it drink more than 1L per 2500km or so? Lot of white smoke? Rough running and noise?