The novated lease company are used to answering these questions - you could contact them.

We have always done it - DH does very high kms and it also reduces his taxable salary. BUT - the rules have changed recently and once this lease runs out we won't be doing it again, as there will no longer be a tax benefit.

One tip though - our novated lease company always rolls the insurance cost into the quote. We always pull it out and get our own insurance as they seem to charge an absolute fortune for insurance, and we manage to get it ourselves a whole lot cheaper. They still 'pay' for it though - we just send in the receipt.