Jill de Buisson has watched the Tauranga Toy Run more than double in size since the first group of hot rods congregated 13 years ago.
About 100 cars cruised through Tauranga in 2004 and de Buisson, one of the event organisers, said she was expecting more than 225 this year.
The annual charity run collects new toys for the Child Cancer Foundation and money donations for Waipuna Hospice.
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This year's event will be held on Friday and de Buisson said all hot rods, classics, street machines and muscle cars were welcome to join in.