Auckland's Starship Hospital has received $2000 raised by Tui Headquarters' Mangatainoka Motors event.
Donor partnerships team member Sarah Woodhams said Starship had received the money on February 4.
"I am delighted to confirm that the $2000 so generously donated by Tui Brewery yesterday will go toward the Starship national air ambulance service," Ms Woodhams said.
The air ambulance service flies top medical experts to life-threatening emergencies around the country. Once children are stabilised they are taken to Starship.
Vintage and classic cars and motorbike owners paid $15 to register in the annual display and were judged by Tui girls in nine different categories.
Winners received prizes in a special ceremony.
Tui manager Jenny Holmes said more than 500 classic cars and 500 bikes were on show but only 168 had actually registered. "A lot of people just came for the outing to show their cars/bikes off to the public without registering their car/bike," Mrs Holmes said.
She said the entry fee per car or bike included a donation to the Starship Foundation but also went towards prizes.
"So $500 went towards spot prizes and $2000 to Starship.
"At the end of the day, it's up to us what we do with it, but we felt the foundation definitely gets more than the prizes," Mrs Holmes said.