Stuff Fibre has been warned by the Commerce Commission over its unsubstantiated broadband speed claims.
NZ Fibre Communications Limited, which trades as Stuff Fibre, likely breached the Fair Trading Act because it didn't have reasonable grounds for making the claim that it is "Probably NZ's Fastest Internet", the regulator said in a statement.
Stuff Fibre hadn't done any broadband speed comparisons with competitors and admitted it didn't know if its broadband services were actually faster than its competitors.
The commission took the view that the caveat "probably" was not effective to prevent customers from being misled, it said.
"The internet speed claim is a matter of scientific fact that consumers would expect to be known and verified," commissioner Anna Rawlings said.