The Advertising Standards Authority has ruled a Super City advertisement placed by the Greater Wellington Regional Council (GWRC) was "misleading" and "likely to exploit" the reader.
The authority has partly upheld a complaint from the Hutt City Council against the regional council, finding that five statements made in an advertisement placed in The Hutt News had "not been prepared with a due sense of social responsibility".
The board ruled that in certain statements the regional council had presented its own assumptions and opinions as facts, which was likely to exploit the "lack of knowledge of the reader".
It also found the regional council had misrepresented and misquoted the commission's draft proposal.
However, the authority ruled three other statements listed in the complaint were not in breach of its code of ethics.