I was looking for an inexpensive car rental option last night and checked out Bargain Rent a Car - Nudgee (Brisbane).
They provide car rentals for older cars as well as newer cars.
managed to get a mazda 3 for 6 days for $116 - 10% discount.
This seems an automatic discount for new customers how ever it only happens for your first search.
I.E. :
how this was done was when on my first date search on the site it showed a "10% discount" against the total amount.
I tried a second search of other dates but then it showed the "regular" price -$129.
I cleared my browsers history and cookies (just because) and started up a VPN.
searched again and again got the "10% discount" against the total amount.
I booked that.
I then did a second search for the same dates and it showed the "regular" price again -i.e. no 10 % discount.
got it?