Hat-tricks to Adam Dickinson and Manel Exposito laid the foundation for City's win over the New Caledonians. Three goals in the opening nine minutes ended any challenge for Mont-Dore who trailed 9-0 at halftime. They produced a little better in the second half, scoring twice and restricting the hosts to just three goals.
"I think we played fantastically well in the first half," said City coach Ramon Tribulietx.
"We were good enough to put the first few chances away and Mont-Dore then lost the plot a little bit, which was understandable with the way we played."
Captain Jake Butler's header from a corner just before halftime was enough to get Waitakere home at Stade Pater.
Fijian side Ba and Vanuatu champions Amicale continued their domination of group A with 2-0 home wins over Hekari United and Solomon Warriors. The unbeaten teams first clash in Port Vila on Saturday with the return in Port Vila a week later.
The top two teams in each group progress to the May 4/11 home and away semifinals with the winners meeting, in Auckland, on May 19 in the final with the winner going on to represent Oceania in Fifa's Club World Cup in Morocco in December and with it a guaranteed minimum US$500,000 pay day.