For 20-year-old drivers, Nationwide offers the cheapest car insurance option when added to a family policy, at an average monthly rate of $181 and an annual rate of $2,170. This compares favorably to the average car insurance cost of $2,419 per month or $202 per month when added to a family policy.
Twenty-year-old drivers have lower premiums compared to teenagers due to increased driving experience, leading to potentially fewer risks. However, rates for 20-year-olds are still higher than those of older drivers because the former are considered more likely to be involved in accidents than drivers who are in their mid-twenties and beyond.