Hey all, this is an older question but it seems to still get a lot of attention on PointHacks. I’ve written a comprehensive car rental insurance guide over on RideHacks that deals with all the options of the rental insurance policies.
You can visit the article here
With respect to this question, the best option by far is the Amex Platinum Charge card. It’s benefits are outstanding, generous and with less conditions than many of the other cards.
However the high-end cards from each of these banks also have a policy (mostly all the same one except for ANZ):
- St George
- Bank of South Australia
- Bank of Melbourne
Note that any card with international insurance generally has a rental excess cover included for overseas travel. Those cards above are specific to domestic rentals. There is also a product by CBA on their high-end cards but it really wasn't competitive when I did the analysis.
Once again, the full review is here
Otherwise, happy to answer any follow up questions here.