New cars cost more to insure because they have a higher market value than old cars. This higher value means that the actual cash value (ACV) is also higher. Insurers face more risk with new cars because they'll pay more to replace them than they would with an older car.
If you're buying a new car, consider getting collision and comprehensive insurance. These coverages, also known as full coverage insurance, help pay for repairs and can even replace your car, which can be beneficial as new cars are more expensive to fix. If you're financing the car, think about gap insurance. It can cover the difference between what you owe on your loan and what your insurance pays if you have an accident.