Speeding ticket. When you get a quote for illinois auto insurance from allstate, you may be eligible for discounts that could help you save. All drivers must keep proof of insurance in the vehicle to show law enforcement upon request. What is the average cost of auto insurance in illinois? What are the best car insurance companies in illinois? But in illinois, companies can also consider your age, gender, credit history, marital status, and more when setting premiums. S data of car insurance in illinois, based on the profiles of a 40-year male and female. This service is cheaper than the AAA roadside service plan. If you get stuck on the side of the road, the service will send a tow truck to your home, or take you to a repair shop. " U003ematt is a senior insurance writer at valuepenguin who works on distilling the complex details of insurance into accessible advice.