This might be of interest: I am getting finance with Macquarie at 4.99% (went up today, awesome, dude where's my car) and for me it is still heaps cheaper than getting a novated lease. Here are my sums in case you are interested:
Macquarie @ 4.99% for an M3 RWD is $13,600 per year over 4 years = 54,480 plus residual of $15,00 = $69,480 total. (That is already minus the 3k rebate.)
Novated lease on vehicle only: $15,500 per year over 4 years = $62,000. Plus a residual of $25,000 = $87,000. 87k is how much you pay for a 65k car through Smartleasing. What the actual fudge. It's pretty horrific interest - they hide how much they are charging through all the post-tax pre-tax crap but when you strip it back, the figures speak for themselves.
A $50k Nissan Leaf gets you $9k off in FBT savings, so let's say FBT gets you $12k off the Tesla = $75k for the car - it's still cheaper to go Macquarie. It's really opened my eyes to how these leasing companies operate. Plus with Macquarie, it doesn't get complicated if you leave your job and can't get continue your lease - if that happens, you have to pay it out and it gets complex.
(Btw in the interests of clarity I just compared the cost of the vehicle leasing with the cost of the vehicle on finance. Obviously in novated leasing you also get petrol, tyres, etc all bundled in for a set cost. That figure is higher that the one I have given, but isn't any better value since most of the pre-tax savings are on petrol, servicing, etc and that doesn't apply as much, so the savings are much less significant).
Every situation is different obviously, but for me, it's a no brainer.