In Victoria a Certificate of Roadworthiness is generally required when a vehicle is sold or if a used vehicle is to be re-registered. This helps minimise the number of poorly maintained vehicles on the road. In some cases a Certificate of Roadworthiness is also required to clear a Vehicle Defect...
How Often your car needs a Tune Up varies from one vehicle to another. Most older vehicles with non-electronic ignitions should be tuned every 10,000 to 15,000 kilometres s or every year, whichever comes first.