Why Multi-Vehicle Policies Cost More Than They Should
You added a second or third car to your Montana policy and the premium jumped more than you expected. You are paying for coverage symmetry your household does not need.
Montana law requires $25,000 per person and $50,000 per accident in bodily injury liability, plus $20,000 in property damage liability. Those minimums apply to the policy, not to each vehicle. Collision and comprehensive are optional, and you can structure them differently for each car on the same policy. Most households do not, and that is where the waste lives.
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Get Your Free QuoteMontana Liability Minimums
$25,000 / $50,000 / $20,000
Bodily injury per person, bodily injury per accident, and property damage. These limits anchor every Montana auto policy and cannot be reduced. Collision and comprehensive sit on top of this base and can be tailored per vehicle.
Montana Code Annotated 61-6-103
The Coverage-Symmetry Trap
When you add a vehicle to an existing policy, most carriers default to matching the collision deductible and comprehensive coverage across all cars. If your first car carries a $500 collision deductible, the second car gets the same $500 deductible automatically.
The structural reality: collision and comprehensive are vehicle-specific coverages. Liability protects you from claims by others and applies at the policy level. Collision and comprehensive protect your own vehicle and can be set independently for each car. A 2015 sedan and a 2023 SUV on the same policy can carry different deductibles, and one can drop collision entirely while the other keeps it.
Montana's average annual auto insurance expenditure per insured vehicle was $1,154.92 in 2023. Households with multiple vehicles pay more in total, but the per-vehicle cost drops when you structure coverage to match each car's actual value and use pattern rather than applying a one-size template.
How to Restructure Coverage Across Your Vehicles
Request a quote from your current carrier with collision removed from the lowest-value vehicle. Most carriers let you adjust coverage mid-term; the change re-rates the policy and refunds the difference. If the vehicle is financed, the lender requires collision and comprehensive until the loan is paid off. If you own it outright, collision is optional. Compare the six-month collision premium to the vehicle's current market value minus your deductible. That math works.
For vehicles you keep with collision, raise the deductible on older cars and lower it on newer ones. A $1,000 deductible on a 2016 vehicle cuts premium more than the same deductible increase on a 2022 vehicle, because the collision premium is already lower on the older car. The deductible is what you pay out of pocket at claim time; the premium is what you pay every six months whether you file a claim or not. You break even if you file a collision claim once every three years. Most households do not.
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Liability Stays the Same, Comprehensive Follows Use Pattern
Liability coverage applies at the policy level and must meet Montana's $25,000/$50,000/$20,000 minimums on every vehicle. You cannot lower liability on one car and raise it on another. Comprehensive works differently. It pays for theft, vandalism, weather damage, and animal strikes. If one vehicle is garaged in a rural area with high deer-collision rates and another is garaged in town, the rural vehicle's comprehensive premium is higher. If the rural vehicle is also older and worth less, you can drop comprehensive on that car and keep it on the in-town vehicle.
Montana recorded 165.5 motor vehicle thefts per 100,000 population in 2024. Theft risk varies by county and by vehicle type. Comprehensive premium reflects that risk. If you own a vehicle that is rarely driven and garaged at a second property, comprehensive may cost more than the coverage is worth. Compare six months of comprehensive premium to the vehicle's current value. That is a reasonable ratio. The math tilts toward dropping it.
Uninsured motorist coverage is optional in Montana but recommended. Seven point two percent of Montana motorists were uninsured in 2023. Uninsured motorist coverage pays your medical bills and lost wages when an at-fault driver has no insurance. It applies at the policy level like liability, and the cost is modest compared to collision and comprehensive. Keep it.
Montana Uninsured Motorist Rate
7.2%
Approximately one in fourteen Montana drivers carries no insurance. Uninsured motorist coverage protects your household when an at-fault driver cannot pay. The premium is lower than collision and applies across all vehicles on the policy.
Insurance Research Council, 2023
When to Compare Carriers and When to Stay
Restructuring coverage on your current policy cuts premium immediately. Switching carriers adds a second variable. Compare carriers after you have restructured coverage, not before. If you switch carriers with the old coverage structure still in place, you are comparing quotes that carry the same waste. Get a quote from your current carrier with collision removed or deductibles raised on the vehicles where that makes sense, then get quotes from other carriers with the same restructured coverage. Fifteen carriers write auto insurance in Montana, including standard-tier carriers that write multi-vehicle policies. State Farm, Geico, Progressive, Allstate, and Farmers all write households with two or more vehicles.
When you request quotes, specify the coverage structure you want for each vehicle. Do not let the carrier default to symmetry. If you want $500 collision on the 2022 vehicle, $1,000 collision on the 2018 vehicle, and no collision on the 2014 vehicle, state that in the quote request. Carriers can structure coverage that way; they just do not volunteer it.
What Happens Next
Call your current carrier or log into your account portal. Request a quote with collision removed from the lowest-value vehicle you own outright, or with the deductible raised to $1,000 on older vehicles. The carrier will re-rate the policy and show the new premium. If the savings justify the change, authorize it. The change takes effect immediately, and the carrier refunds the prorated difference for the current term. If you financed any vehicle, confirm the lender's coverage requirements before dropping collision or comprehensive. Most lenders require both until the loan is paid off. Once you have restructured coverage on your current policy, compare that restructured premium to quotes from other Montana carriers writing multi-vehicle households.