The cheapest car insurance, period, will likely carry the minimum coverage required in your state. In most states, this is liability insurance only, which covers property damage and medical bills for others due to accidents you cause. Some states also require uninsured and underinsured motorist coverage, which pay for your injuries or damage if an at-fault driver doesn’t have enough insurance.
Car insurance rates vary greatly depending on age. Your risk profile as a driver will change throughout your life, so you may be eligible for discounts at some points in your life while other times you may see your car insurance premium increase. This is why you want to keep shopping for car insurance throughout your life so you ensure the best value.