## Yes, in [tag:new-south-wales] ##

The New South Wales [*Crimes Act 1900*][1] says:

> 86 KIDNAPPING
>
>(1) Basic offence A person who takes or detains a person, without the person's consent--
>
>(1) ...
>
>(a1) with the intention of committing a serious indictable offence, or
>
>(b) ...
>
>is liable to imprisonment for 14 years.

Stealing a car is a “serious indictable offence” so this is kidnapping.


  [1]: https://www.legislation.nsw.gov.au/view/html/inforce/current/act-1900-040