Novated Lease can work if you are on a high tax bracket and do quite a few Kms per year. I've done this in the past.
If you have to borrow money, the small LOR option is good if you have the right banking setup (ie. you do not need to pay loan est. fees etc..) as you can then bargain a good deal on your terms.
If you use the dealer loans, their 'unbelievably' low rates, then use your head... it is unbelievable because your not getting the 'best' deal up front and they have a stake in the finance deal as well. It is all shims and mirrors...
Oh, one further lot of 2 cents, if you buy at the 'end of the month' you may get a better deal from a dealer if they have had a slow month (to get their quota up) and end of FY is good timing, as is model change-over time. These considerations alone can save you the amount of interest you will pay on your loan.
A final point if I may indulge. Most people don't properly consider the
through life cost of their vehicle. Rego, insurance, maintenance, running costs (fuel, lubricants, type of tyres etc..), depreciation, warranty periods, etc.. are just a few things one should consider in order to determine the cost of ownership per Km. If you actually do this, you might think twice about a potential purchase.
If you're concerned about your loan interest rate, then you should be more concerned about these points as well, as they can comparatively cost you far more than the loan itself.
My 2 cents....or maybe a bit more