Auto insurance premiums are calculated using multiple factors: base rate, driver age, driving record, vehicle type, location, coverage level, credit score, and annual mileage. Each factor multiplies the base rate to determine final premium.
- Drivers under 25 face a 1.5× multiplier; rates drop an average of 20% at age 25
- A single at-fault accident can increase premiums by 20–50% for 3–5 years
- Urban ZIP codes average 25–40% higher premiums than rural areas due to theft and collision rates
- Credit-based insurance scores affect rates in 47 states; poor credit can add 40–80% to premiums