Bank of Montreal proposes comprehensive cover and third-party car insurance policies, such as BMO MasterCard rental car insurance, which can be useful for traveling abroad.
For car rental insurance you should apply for BMO World Elite MasterCard. In such a case the rental vehicle will be covered for any damage or being stolen, but it doesn’t cover third-party liability or personal injury insurance. You are required only to pay for the rental using your credit card.
To quote for BMO car insurance, please use the link.