From 1 July 2017, the following car threshold amounts apply.
There’s an upper limit on the cost you use to work out the depreciation for the business use of your car or station wagon (including four-wheel drives). You use the car limit of $57,581 that applies to the year you first use or lease the car.
Goods and services tax (GST)
Generally, if you purchase a car and the price is more than the car limit, the maximum amount of GST credit you can claim is one-eleventh of the car limit amount.
You cannot claim a GST credit for any luxury car tax you pay when you purchase a luxury car, regardless of how much you use the car in carrying on your business.
Luxury car tax
The luxury car tax threshold for luxury cars has increased to $65,094.
The threshold for fuel efficient luxury cars for the 2017–18 financial year remains at $75,526.
In general, the value of a car includes the value of any parts, accessories or attachments supplied or imported at the same time as the car.
(Reference: Australia Taxation Office)