Here are some of the things to consider:
Driving Experience: 18-year-olds are relatively new drivers and may not have the same level of experience and judgment as older drivers. They may be less likely to recognize and react to potential hazards on the road, and may be more prone to risky behaviors such as speeding or distracted driving.
Vehicle Type: Some rental cars may be more difficult to drive than others, especially for inexperienced drivers. For example, a larger vehicle or one with a more powerful engine may be more challenging to control. Consider choosing a smaller, easier-to-drive car for an 18-year-old driver.
Insurance: Most rental car companies require drivers to be at least 21 years old. However, some companies may allow younger drivers to rent vehicles if they have proof of insurance and meet certain other requirements. It's important to understand the terms and conditions of the rental agreement before booking a car for an 18-year-old driver.
Driving Conditions: The driving conditions in which an 18-year-old will be driving are also important to consider. If they will be driving in unfamiliar or challenging conditions, such as heavy traffic or bad weather, it may be best to err on the side of caution and choose a more experienced driver.
Ultimately, whether it is safe for an 18-year-old to drive a rental car is a decision that should be made on a case-by-case basis, taking into account all of the relevant factors. If you have concerns about an 18-year-old driving, it is best to discuss them with the young person and decide whether it is in their best interest to rent a car.