A gravel road runs between corn fields at sunset, with tall corn stalks in close-up on the right and the sun low on the horizon under orange and gray clouds.

Multi-Car Insurance — Illinois

Illinois requires 25/50/20 liability coverage and is an at-fault state.

Compare my rates

Free to compare

Illinois at a Glance

25/50/20

Minimum liability limits, in thousands of dollars (per person / per accident / property)

At-fault

The at-fault driver's insurance pays for the damage they cause

Required

Uninsured motorist coverage must be on every policy

Source: state DMV, insurance department and statute records, verified July 2026

Multi-Car Liability Requirements in Illinois

Uninsured motorist coverage is also required on each vehicle. The multi-car discount applies when all vehicles sit on the same policy and typically share a garaging address, but each vehicle can carry its own coverage level above the minimum.

Bodily Injury Liability

Every vehicle on your Illinois multi-car policy must carry at least 25/50 bodily injury liability to cover injuries you cause to others in an accident. You can raise limits on individual vehicles—one car at 100/300, another at the 25/50 minimum—while keeping all vehicles on the same policy for the multi-car discount. State Farm, Allstate, and Progressive all write multi-car policies in Illinois and allow per-vehicle limit customization.

Property Damage Liability

The multi-car discount applies to the entire policy regardless of which vehicles carry higher limits.

Uninsured Motorist Coverage

Illinois requires uninsured motorist coverage on every vehicle you insure, protecting you when the at-fault driver has no insurance. You can reject it in writing, but most multi-car households keep it on all vehicles.

Multi-Car Discount Eligibility

The multi-car discount in Illinois requires all vehicles to sit on one policy and typically share a garaging address. Adding a vehicle mid-term re-rates the entire policy rather than adding a flat amount, so the discount adjusts with each vehicle added or removed. Geico, Progressive, State Farm, and Allstate all offer multi-car discounts in Illinois, but the structure and amount vary by carrier.

Full Coverage Per Vehicle

Each vehicle on your Illinois multi-car policy can carry its own collision and comprehensive coverage—full coverage on a financed car, liability only on an older paid-off vehicle—while the entire policy earns the multi-car discount. Collision and comprehensive each carry their own deductible per vehicle, and you choose the deductible amount when you add the coverage to that specific car.

What Shapes Multi-Car Costs in Illinois

about $96/mo

Average car insurance spending in Illinois

Rate data: NAIC Auto Insurance Database, 2023

What Affects Your Rate

  • Each vehicle's year, make, model, and value—newer financed vehicles with full coverage cost more than older paid-off cars with liability only, even on the same Illinois multi-car policy.
  • Each driver's age, record, and claims history—adding a teen driver or a driver with a recent violation raises the entire policy premium, though the multi-car discount still applies.
  • The coverage level selected per vehicle—one car with 100/300/100 and full coverage, another with 25/50/20 liability only—shapes the total premium while the multi-car discount applies to the combined cost.
  • The multi-car discount structure—most Illinois carriers require all vehicles on the same policy and the same garaging address, and the discount amount varies by carrier.
  • The garaging ZIP code—urban Illinois ZIP codes with higher theft rates (Illinois had 303.1 motor vehicle thefts per 100,000 population in 2024) and traffic density cost more than rural areas, even with the multi-car discount applied.
  • Annual mileage per vehicle—low-mileage households can reduce cost by reporting accurate annual mileage for each vehicle, and some carriers in Illinois offer telematics or pay-per-mile programs that reward low mileage on multi-car policies.
A man in a cap, dark hooded jacket, jeans and boots leans against the side of a dark pickup truck parked on gravel, with dry grass and distant hills lit by a low sun behind him.

Pay for the Miles You Actually Drive

Get My Low-Mileage Insurance Quote

Frequently Asked Questions

How does the multi-car discount work in Illinois?

The multi-car discount in Illinois applies when you put two or more vehicles on one policy and typically requires all vehicles to share a garaging address. Adding a vehicle mid-term re-rates the entire policy rather than adding a flat amount, so the discount adjusts with each vehicle added or removed. Geico, Progressive, State Farm, and Allstate all offer multi-car discounts in Illinois, but the structure and amount vary by carrier.

Can I put two cars on one policy in Illinois if they have different coverage levels?

Yes. Each vehicle on an Illinois multi-car policy can carry its own coverage level—one with 100/300/100 and full coverage, another with the 25/50/20 minimum and liability only—while the entire policy earns the multi-car discount. The discount applies to the combined premium regardless of which vehicles carry higher limits or full coverage.

Which carriers in Illinois give the best multi-car discount?

State Farm, Geico, Progressive, and Allstate all write multi-car policies in Illinois and offer multi-car discounts, but the discount structure and amount vary by carrier. Some carriers give a larger discount when three or more vehicles sit on one policy, and most require all vehicles to share a garaging address. Compare carriers to find the best multi-car discount for your household.

Does adding a vehicle to my Illinois policy change the multi-car discount?

Adding a vehicle mid-term re-rates your entire Illinois policy rather than adding a flat monthly amount, so the multi-car discount adjusts with the new vehicle. The new vehicle's coverage level—liability only or full coverage—shapes the re-rated premium, and most carriers in Illinois apply the multi-car discount immediately when the vehicle is added to the existing policy.

Can I combine two separate Illinois policies into one multi-car policy?

Yes. Combining two separate Illinois policies into one multi-car policy after marriage or a household move earns the multi-car discount if all vehicles share a garaging address and all drivers are listed on the policy. The combined policy cost depends on each driver's record and each vehicle's coverage level, and some carriers in Illinois give a larger discount when three or more vehicles sit on one policy.

Do low-mileage vehicles on a multi-car Illinois policy cost less?

Many carriers in Illinois allow you to report accurate annual mileage for each vehicle on a multi-car policy, and some offer telematics or pay-per-mile programs that reward low mileage. Low-mileage households can reduce cost by verifying that each vehicle's mileage is reflected in the policy, and the multi-car discount still applies to the combined premium.

Find Your City in Illinois

Chicago

urbanUrban ZIP codes in Chicago typically cost more than suburban or rural Illinois areas due to higher theft and accident rates, even with the multi-car discount applied.

Chicago's urban density and 303.1 motor vehicle thefts per 100,000 population statewide in 2024 make comprehensive coverage common on multi-car policies, though the multi-car discount still applies when all vehicles sit on one policy.

Aurora

suburbanSuburban Aurora ZIP codes typically cost less than Chicago but more than rural Illinois, with the multi-car discount reducing the combined premium for two or more vehicles on one policy.

Aurora households with multiple vehicles often combine policies after marriage or household moves, earning the multi-car discount when all vehicles share a garaging address and all drivers are listed on the Illinois policy.

Joliet

suburbanJoliet's mix of urban and suburban driving conditions shapes multi-car policy cost, with the multi-car discount applying when all vehicles sit on one policy and share a garaging address.

Joliet households with low-mileage vehicles can reduce multi-car policy cost by reporting accurate annual mileage for each vehicle, and some carriers in Illinois offer telematics programs that reward low mileage on multi-car policies.

Naperville

suburbanNaperville's lower accident and theft rates compared to Chicago typically result in lower premiums for multi-car policies, though cost still depends on the vehicles and drivers on the policy.

Naperville's suburban commute patterns and lower theft rates compared to Chicago make it common for multi-car households to carry full coverage on one vehicle and liability only on another, with the multi-car discount applied to the entire policy.

Rockford

urbanRockford ZIP codes typically cost less than Chicago or suburban Cook County for multi-car policies, with cost shaped by each vehicle's coverage level and each driver's record.

Rockford's lower population density compared to Chicago typically results in lower multi-car policy premiums, though the multi-car discount structure and amount vary by carrier writing in Illinois.

Elgin

suburban

Springfield

suburban

Peoria

urban

Waukegan

suburban

Champaign

urban

Cicero

urban

Evanston

suburban