Playing in their first game in Australia, the expansion club extended their winning streak to four matches when Guillermo May scored in the 34th minute at Allianz Stadium on Sunday.
Two points clear of the pack, Auckland are the only team to have won all their fixtures.
Making the feat more impressive, Steve Corica's 'Black Knights' have also kept a clean sheet across the opening five rounds.
The Bulls remain seventh after their third loss, sitting outside the top six by three points.
.— Isuzu UTE A-League (@aleaguemen) @fc_auckland score their first goal on Aussie shores and it's a ������ move 🔵👌Guillermo May opens his A-Leagues account, finishing off some great counter-attacking football from Steve Corica's side!Watch #MACvAKL live and exclusive NOW on Paramount+ 📺 pic.twitter.com/YN7oRyhgcdNovember 24, 2024
Macarthur left-back Walter Scott paid the price for a poor pass in Auckland's attacking half, opening the door for May to score in the first half.
Scott had intended for captain Valere Germain to receive the ball but Kiwi defender Francis De Vries intercepted to hand off to Liam Gillion and start the chain for their goal.
Kealey Adamson almost levelled the scores in the 67th minute but his long-range attempt went wide.
Ariath Piol who nailed a stunning bicycle kick goal in the Bulls' 2-1 win against Sydney FC last round, tried his luck two minutes later but was denied by goalkeeper Alex Paulsen.
Macarthur enjoyed early dominance and were cheered on by a union of Bulls fans and Wellington faithful who stayed back from the previous fixture.
— Macarthur FC (@mfcbulls) @WgtnPhoenixFC� Us #MACvAKL #WeAreTheBulls https://t.co/pTQw161j8fNovember 24, 2024
Piol had sounded a warning after earning a starting position in the Bulls line-up, flaunting his pace to easily outrun defender Dan Hall and unleash towards goal.
Had it not been for an impeccable save by Paulsen, Piol would have opened the scoring in the 17th minute.
Germain missed a chance to break the deadlock after a superb cross from Scott, his header just off target in the 24th minute.
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