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QUALITY DECLARATION - SUMMARY
The Motor Vehicle Census collates vehicles which were registered with a motor vehicle registration authority at 31 March 2008. The data is collected under the legislation of each state and territory for the purposes of licensing vehicles to drive on public roads and the collection of third party insurance.
The Motor Vehicle Census includes all vehicles registered with a state, territory or other government motor vehicle registry for unrestricted use on public roads with the following exceptions:
Vehicles on register are defined as those vehicles registered at the date of the census, or had registration expire less than one month before that date. Data reflects the information as recorded in registration documents.
Motor Vehicle Censuses have been conducted regularly since 1971 but not every year and not always at the same time of the year. Refer to paragraph 2 of the Explanatory Notes for a list of snapshot dates from 1971.
The snapshot date for the annual Motor Vehicle Census is currently 31 March of the reference year. The statistics are generally released within 8 months of the snapshot being taken.
The size of the registered motor vehicle fleet (above 15 million vehicles) dictates that quality assurance of each record is not possible. Considerable effort is made by the ABS, to improve data quality with consistency checks and comparisons but records are not queried with the motor vehicle registries.
Care should be taken when comparing data items across jurisdictions as there is variation in the reporting from different states and territories.
In addition, data items where conversions eg fuel type or reconfigurations of vehicles have occurred, may not be accurately reported or recorded at the Registry.
For vehicles manufactured during or after 1990, the statistics eg identifying make and model information are based on procedures using the VIN, adopted by state and territory motor vehicle registration authorities.
The types of fuel being used for motor vehicles has undergone some change in recent years. Leaded petrol is no longer available for sale, however, some older vehicles are still recorded as this fuel type by the MVRs. Hybrid vehicles are increasing, however, not all state and territory MVRs are identifying these vehicles separately.
Statistics from the annual MVC are comparable to previous censuses.
Data from the MVC when categorised by year of manufacture can be confronted with Sales of New Motor Vehicles, Australia, cat. no. 9314.0. In addition, the MVC is used as a frame for the Survey of Motor Vehicle Use, Australia cat. no. 9208.0.
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