Rental car companies maintain a black list of customers that they do not want to rent cars to. These people are placed on a rental car "Do Not Rent" list or DNR.
It's quite easy to end up on these lists. For example, it can happen when a rental car company deems you to be an increased risk due to contract violations or unpaid bills.
On rare occasions, we hear from AutoSlash users who landed on a rental car Do Not Rent list- but luckily this is somewhat unusual because the lists can be out of our hands and are often owned by the rental companies themselves. To prevent yourself from showing up on the list again, you may want to look at a few things. For instance, we can help you with mitigating risks and give advice on adapting better security measures.
You will not be on the Rent Blacklist if you follow the rules. But if, let's say, you put 1200 miles on a rental car over a weekend when your contract did not include unlimited mileage then there could be a problem. We never use the "Do Not Rent" list.