The Multi-Car Collision Decision
You own two or more cars in Illinois, and you're looking at your policy trying to figure out whether you need collision coverage on all of them. One vehicle is newer, financed, and clearly needs it. The other is older, paid off, and you're not sure. You've heard that dropping coverage from one car might affect your multi-car discount or change what you pay for the other vehicles, and you want to know what's actually true.
Collision coverage pays to repair or replace your vehicle after an accident with another car or object, regardless of fault. Illinois does not require it — the state mandates only liability minimums of $25,000 per person, $50,000 per accident for bodily injury, and $20,000 for property damage, plus uninsured motorist coverage. Collision is optional, but lenders require it on financed vehicles. On a multi-car policy, you choose collision separately for each vehicle. The question is whether that choice affects the rest of your policy.
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Get Your Free QuoteIllinois Liability Minimums
$25,000/$50,000/$20,000
Illinois requires $25,000 per person and $50,000 per accident for bodily injury liability, plus $20,000 for property damage. Collision coverage is not part of this requirement and remains optional for vehicles you own outright.
Illinois Secretary of State
Collision Coverage Does Not Control the Multi-Car Discount
The multi-car discount applies when you insure two or more vehicles on the same policy. The discount reduces the base premium for each car, and it does not disappear when you drop collision from one of them. What triggers the discount is the number of vehicles on the policy and whether they share a garaging address, not the coverage selections you make for each car.
Dropping collision from an older vehicle changes the premium for that vehicle only. The newer car with collision still receives the multi-car discount, and the older car without collision still receives it. The discount percentage stays the same. What changes is the base premium the discount applies to — a car without collision has a lower base, so the dollar amount of the discount is smaller, but the percentage reduction remains consistent across all vehicles on the policy.
Some households assume that removing collision from one car downgrades the entire policy or removes the multi-car benefit. That is not how multi-car policies work in Illinois. Each vehicle carries its own coverage selections, and the multi-car discount applies to the total policy regardless of whether every car carries the same coverages.
Dropping collision from one vehicle on a multi-car policy does not forfeit the multi-car discount — the discount applies to the policy, not to individual coverage selections.
When Collision Makes Sense on a Multi-Car Policy
Collision coverage makes sense when the vehicle's value justifies the premium. A common rule of thumb: if the car is worth less than ten times the annual collision premium, the coverage costs more over time than the car is worth. For a financed or leased vehicle, the lender requires collision until the loan is paid off. For a newer vehicle you own outright, collision protects an asset you cannot easily replace.
On a multi-car policy, you choose a deductible for each vehicle separately. A higher deductible lowers the collision premium but increases what you pay out of pocket after an accident. If you carry collision on two cars, you can set a $500 deductible on the newer one and a $1,000 deductible on the older one to balance premium and risk. Some carriers let you set different deductibles per vehicle; others require the same deductible across all cars with collision. Check your policy's deductible structure before you adjust coverage.
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How Dropping Collision Affects Your Premium
Removing collision from one vehicle lowers the premium for that car immediately. The reduction depends on the car's age, value, and your deductible, but collision typically accounts for a significant portion of the total premium on older vehicles. When you drop it, the base premium for that car falls, and the multi-car discount applies to the new lower base. The premium for your other vehicles does not change unless you adjust their coverages at the same time.
Illinois carriers re-rate the policy when you add or remove a vehicle or change coverage mid-term. Dropping collision from one car triggers a re-rating for that vehicle only, not for the entire policy. If you drop collision from an older car and add a newer car with collision in the same term, the carrier re-rates both changes together, and the multi-car discount applies to the updated policy structure.
Some households drop collision from a rarely-driven vehicle and keep it on the daily drivers. That strategy works on a multi-car policy as long as you understand the risk: if the rarely-driven car is damaged in an accident, you pay the full repair or replacement cost out of pocket. The multi-car discount does not compensate for that exposure — it only reduces the premium for the coverages you carry.
Illinois Uninsured Motorist Rate
15.2%
15.2% of Illinois motorists drive uninsured. Uninsured motorist coverage is required in Illinois and protects you when an at-fault driver has no insurance. Collision coverage is separate and pays regardless of the other driver's insurance status.
Insurance Information Institute, 2023
Collision vs Comprehensive on a Multi-Car Policy
Collision and comprehensive are separate coverages, and you choose them independently for each vehicle. Collision pays for damage from accidents with other cars or objects. Comprehensive pays for damage from theft, vandalism, weather, fire, and animal strikes. On a multi-car policy, many Illinois households keep comprehensive on all vehicles because it costs less than collision and covers risks that do not depend on the car's age or value — a hailstorm damages a ten-year-old car as easily as a new one.
Dropping collision but keeping comprehensive is a common strategy for older vehicles. Comprehensive premiums are lower, and the coverage protects against total-loss events like theft or storm damage that can happen regardless of how often you drive the car. If you drop both collision and comprehensive, you carry liability-only coverage on that vehicle, which meets Illinois's legal requirements but leaves you with no protection for damage to your own car.
Compare Carriers That Write Multi-Car Policies in Illinois
Illinois households insuring multiple vehicles have access to carriers that specialize in multi-car policies and offer flexible coverage options. State Farm, GEICO, Progressive, Allstate, and Farmers all write multi-car policies in Illinois and let you set collision coverage separately for each vehicle. Some carriers offer better multi-car discounts than others, and some let you mix coverage levels more flexibly across vehicles on the same policy.
When you compare carriers, ask whether the multi-car discount applies to the total policy or to each vehicle individually, and whether you can set different deductibles per car. Some carriers require the same deductible across all vehicles with collision; others let you customize. The structure matters when you're deciding whether to keep collision on an older car or drop it and carry it only on the newer ones. Compare quotes with collision on all vehicles, then compare again with collision dropped from the older car to see the actual premium difference. The multi-car discount applies in both scenarios — the question is whether the collision premium justifies the coverage for each specific vehicle.