The insurance for a car registered by a business tends to cost more than insurance registered with an individual. A vehicle registered under a business name will not qualify for coverage on a personal auto policy in most cases.
The cost of insurance can have a lot to do with where the car is driven, how much it is driven, and the level of asset protection required. There is a higher likelihood of an accident if a car is driven to several locations per day that the driver is not familiar with, or if the commuting distance is significantly longer than average. While the recommended liability limits of a personal policy are $100,000 per person and $300,000 per occurrence, a business is more likely to be sued for a much higher amount and may require protection in the millions.
To learn more about how to protect your company car, check out this article: https://getjerry.com/advice/how-to-insure-the-company-car-for-your-business-by-cheryl-knight.