"Rental coverage" refers to a type of insurance that helps cover the cost of renting a vehicle if your own car is being repaired after an accident or is temporarily unavailable for use.
There are several different levels of rental coverage depending on what you are looking for. (rentersinsurance.net)
Consider whether you'd like your policy to include rental coverage for when your car is stolen or otherwise disabled, or roadside assistance. (pocketsense.com)