Rental car insurance and credit cards: Many Canadian credit cards include rental car insurance coverage, but there is something very important to know about this. It DOES NOT cover 3rd party liability, meaning that if you damage somebody’s else property, it is not covered. This type of insurance is called a damage/collision wavier, and, as opposed to a real car insurance policy, it is only good for covering scratches/damages on the rental car itself.
Insurers determine your rates based on the year, make, model, engine size, and age of a vehicle. More expensive cars, less safe cars, and commonly stolen cars can cost more, as insurance is based partly on how likely your car is to get stolen, how much it would cost to replace it, and the cost to repair it after a crash. Vehicles with the highest safety ratings have lower insurance rates.
If you're male and under 25 in Ontario, you're going to get dinged hard. It sucks, but it's the way the system's setup. Other than complaining to your MPP about enacting change, you're mostly out of luck. If you're in a large urban area like Toronto, it's also going to hurt since you're paying for other people's accidents. Here's a map from Kanetix to give you an idea of insurance rate differences across Ontario.
To begin with, you (and all drivers you wish to include in the policy) must have a valid driver's license and be a resident of Canada. Next, insurance companies will look at your prior driving record to determine eligibility and rates. However, rates will vary depending on whether you are looking for a new insurance policy altogether or if you wish to renew an existing one. Other eligibility restrictions may arise from past convictions. This too, will vary depending on when your last conviction occurred and the nature of the conviction.