Welcome to Just Commodores, a site specifically designed for all people who share the same passion as yourself.
take your $800 from the fortnight and go grab an early 90's camry. itll last you ages while you either save a decent deposit or keep saving and buy the car outright a bit later. i see too many young people get sucked into a loan just because we are in a "now" society.
With a bit of luck youll end up with getting paid better by the time you are able to buy and be in an even better position.
Nothing wrong with having a loan. As long as it is manageable. If you can afford to make the repayments without forgoing your quality of life then do it. I have over 300k in loans but there are also 3 houses involved. It is all manageable and I don't miss out on my Tim Tams. When I was 18 it was much harder to get a loan so I saved and payed cash. It wasn't until I got my first house that the lenders wanted to throw money at me. Talk to someone in the know ie: Financial Advisor, and see what you can comfortably afford if you want to go down that road.