Pennsylvania Does Not Require Uninsured Motorist Coverage
You are adding a second vehicle to your Pennsylvania auto policy and your carrier asks whether you want uninsured motorist coverage on the new car. You already declined it on your first vehicle. Now you learn that if you want UM on the second car, you must add it to both—or drop it from both. Pennsylvania does not require uninsured motorist coverage, but the decision you make applies to every vehicle on your policy, not just the one you are adding.
This structural reality catches multi-car households by surprise. One in nine Pennsylvania drivers carries no insurance. Your liability coverage pays the other driver when you cause a crash. Uninsured motorist coverage pays you when an uninsured driver hits you and cannot cover your medical bills or vehicle damage. Because Pennsylvania treats UM as optional, you choose whether to buy it. But once you insure multiple vehicles on the same policy, that choice becomes household-wide.
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Get Your Free QuotePennsylvania Uninsured Driver Rate
11%
One in nine drivers on Pennsylvania roads carries no liability insurance. When an uninsured driver causes a crash, your own uninsured motorist coverage is the only source of payment for your medical bills and vehicle damage if you bought it.
Insurance Research Council, 2023
How Uninsured Motorist Coverage Works Across Multiple Vehicles
Uninsured motorist coverage has two components: UM bodily injury pays your medical expenses when an uninsured driver injures you, and UM property damage pays to repair your vehicle. Pennsylvania law requires carriers to offer both. You may accept or reject each component in writing. Most carriers bundle the two as a single UM package.
When you add a second or third vehicle, the carrier applies your UM election uniformly. If you rejected UM on your first car, the second car is added without UM unless you affirmatively change your election for the entire policy. If you accepted UM on your first car, the second car receives the same UM limits automatically. You cannot insure one vehicle with UM and another without it on the same policy.
This all-or-nothing structure exists because UM coverage follows the injured person, not the damaged vehicle. If an uninsured driver hits you while you are driving your second car, your UM bodily injury coverage pays your medical bills regardless of which vehicle you listed when you bought the policy. The carrier cannot track which vehicle was in the crash and apply different UM limits based on that vehicle's individual election. The policy covers you and your household members across all listed vehicles.
The practical consequence: when you add a vehicle, you choose between adding UM to every car on the policy or leaving every car without it. There is no middle option.
You cannot mix UM and non-UM vehicles on one policy. Adding a second car forces a household-wide UM decision.
What Happens When You Add a Vehicle Mid-Term
When you call your carrier to add a second vehicle, the underwriter re-rates your policy based on the new vehicle's year, make, model, garaging address, and the drivers in your household who will operate it. The carrier also confirms your uninsured motorist election. If you rejected UM when you bought your first vehicle, the system applies that rejection to the second vehicle automatically unless you affirmatively request UM coverage. If you request UM for the new vehicle, the carrier adds it to both vehicles and adjusts your premium accordingly. The UM premium is calculated per vehicle, so adding UM mid-term increases your cost for every car on the policy, not just the one you are adding.
If you accepted UM on your first vehicle, the second vehicle receives the same UM limits without additional paperwork. The carrier applies your existing UM bodily injury and UM property damage limits to the new vehicle and charges the incremental UM premium for that vehicle only. Your total premium rises, but the UM election itself does not change. This is the simpler path: your household-wide UM decision was made at policy inception, and the second vehicle inherits it.
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Changing Your UM Election After You Add a Vehicle
You can change your uninsured motorist election at any time by submitting a written request to your carrier. Pennsylvania law requires the rejection or acceptance of UM coverage to be documented in writing. If you initially rejected UM and later decide you want it, the carrier will add it to every vehicle on your policy effective the date you sign the election form. Your premium increases retroactively to that date, and you owe the additional premium for the period since the election change.
If you initially accepted UM and later decide to remove it, the carrier requires a written rejection form. Removing UM reduces your premium, but you lose the protection across all vehicles. The rejection applies household-wide. You cannot remove UM from one vehicle and keep it on another.
Most Pennsylvania carriers offer UM limits that match your liability limits. Some carriers allow you to buy higher UM limits than your liability limits. When you add a vehicle, the UM limits you selected for your first vehicle apply to the second vehicle unless you request a change for the entire policy.
Pennsylvania Minimum Liability Limits
$15,000 / $30,000 / $5,000
Pennsylvania requires $15,000 bodily injury per person, $30,000 bodily injury per accident, and $5,000 property damage. These minimums do not include uninsured motorist coverage, which is optional. UM limits are chosen separately and typically match or exceed your liability limits.
Pennsylvania Department of Transportation
Why the Household-Wide Rule Matters for Multi-Car Policies
The household-wide UM rule creates a structural decision point when you add a second vehicle. If your first vehicle is an older car you drive occasionally and your second vehicle is a newer car you drive daily, you might assume you can buy UM for the newer car only. Pennsylvania law does not permit that structure. You buy UM for both or neither.
This matters most when your household includes drivers with different risk profiles. A household with a teen driver and an experienced adult driver pays the same UM premium structure across both vehicles, even though the teen's crash risk is higher. The UM coverage does not adjust by driver. It covers every household member across every listed vehicle. If the teen driver is hit by an uninsured motorist while driving either vehicle, the UM coverage applies. If the adult driver is hit while driving either vehicle, the same UM coverage applies. The policy does not distinguish.
Compare Carriers That Write Multi-Vehicle Policies in Pennsylvania
When you add a second or third vehicle, compare how carriers price uninsured motorist coverage across multiple cars. Some carriers charge a flat per-vehicle UM premium. Others calculate UM cost as a percentage of your liability premium, which varies by vehicle and driver. A carrier that charges a lower base rate but a higher UM percentage may cost more for a multi-car household that elects UM than a carrier with a higher base rate and a lower UM percentage.
Pennsylvania law requires every carrier writing auto insurance in the state to offer UM coverage. The price and the underwriting rules vary. Use the comparison tool on this site to see which carriers write policies for households with multiple vehicles in your county. Enter each vehicle separately. The tool shows you which carriers will insure all of your vehicles on one policy and how each prices uninsured motorist coverage when you add it to the household.