The $200,000 feature race, the Sistema Railway Stakes, was won by Fleur de Lune - a first group one win for the mare and trainer Lee Somervell, upsetting the pre-race favourite, glamour horse Burgundy.
Mr Somervell was lost for words after the win, saying he was "over the moon" and "could not have asked for a better New Year's Day present".
Auckland Racing Club chief executive Cameron George said it was a phenomenal day of racing.
"The weather turned it on for Auckland, delivering a crowd of around 8000 and we're delighted with this number," he said.
A club spokeswoman said the crowd at Ellerslie yesterday was up by about 30 per cent from last year and attributed it to the sunshine and "near-perfect weather".
She said Boxing Day was traditionally the "big day" for racing, but numbers attending the New Year's event were "getting right up there".
However, unlike Boxing Day, there was no fashion component on and off the racetracks, but that was intentional in order to make yesterday a family event, the spokeswoman said.
Instead, there was free family entertainment, a kids' zone, popsicle planet, giant games and a swingball park.
The meeting began with a minute's silence to mark the death of jockey Ashlee Mundy after a crash on the track in race seven at Kurow, in North Canterbury, at the weekend.