In order for insurance to cover an accident when the insured is not present, there will need to be comprehensive auto coverage. The facts of each such case definitely matter. If the driver is a relative, then most likely the absent insured’s insurance will cover the accident. The driver also needs to have had permission, express or implied, or the insured’s insurance may not cover the claim, unless the vehicle was stolen. Individual insurance companies and policies may vary in regard to these rules.
Auto insurance premiums depend on the insured party's driving record. A record free of accidents or serious traffic violations typically results in a lower premium. Drivers with histories of accidents or serious traffic violations may pay higher premiums. Likewise, because mature drivers tend to have fewer accidents than less-experienced drivers, insurers typically charge more for drivers below age 25.
When the policy of the vehicle owner and the policy of the permissive user have different limits, the matter becomes even more complicated. If the damages caused by the permissive user’s negligence exceed the owner’s liability limits, the policy of the permissive user might be tapped as secondary coverage, but usually only where the permissive user’s liability limits are higher than the owner’s liability limits.
While an “insured vehicle” may include a friend or neighbor’s vehicle or a rental car, if the vehicle was available for regular use, it might be excluded. A “replacement” vehicle will probably be covered, but in some cases only under circumstances where the insured’s vehicle cannot be operated for some specific reason, such as a repair. Coverage might not follow anyone if the insured is driving a vehicle other than a “private passenger vehicle not owned and listed on the insured’s policy.” There really is no such thing as a standard auto policy anymore and coverage for non-owned autos will be different under some policies and non-existent under others.
In the states with no-fault insurance, insured drivers are typically paid for medical expenses by their own insurers, regardless of who caused the accident. Nonetheless, BI liability coverage is still required in no-fault states because if injuries are bad, the at-fault driver may be sued by the injured party. If that happens, your BI coverage can help cover your liability expenses.
When an insured allows other drivers to drive his vehicle, then, and only then, does the question of whether insurance follows the car or the vehicle become even awkwardly relevant. The right question to be asking is not whether insurance follows the car or the driver, but whether or not other drivers will be covered by the insured’s auto insurance.