By law you must use a child car restraint for all children under 7 every time they travel by car. For more information from the Land Transport Agency NZ GOVT click here http://www.nzta.govt.nz/assets/resources/factsheets/07/docs/07-child-restraints.pdf
Restraints must be suitable for the child’s height, weight and age
Child restraints are sold in shops that specialise in baby supplies, department stores and larger toy shops. You can rent child restraints from the Plunket Society, other community groups and some companies.
The cost of renting child restraints can vary. Sometimes Work and Income New Zealand can provide financial assistance.
More information on renting, buying and installing child restraints is available from car seat retailers and at Plunket, other hire outlets and child restraint retailers.