Knock when turning sharp at low speed.
www.seatcupra.net/forums/showthread.php?t=315436
Solution in the link above.
might be worth editing this to indicate knocking/clunking in a variety of situations (driving at low speeds, turning, driving on an incline, etc)
I had the same noise but ignored this fix because it would only happen when accelerating/decelerating (not while turning). also it would stop once the car warmed up a little so it was really hard to reproduce/identify it.
bright side is I had the spacers fitted today and problem solved!