Do Safety Features Lower Car Insurance?

Often yes, but modestly. The Texas Department of Insurance lists airbags, antilock brakes, and antitheft devices among the things that might earn you a discount, and it adds the part that matters: each company decides what discounts to offer and the amount. Safety feature discounts are also tied to specific coverages rather than the whole premium, so an airbag discount trims the injury portion of your bill and an anti-theft discount trims only comprehensive. The savings are real, but they are a slice of a slice, and the feature you were counting on may already be priced into your rate.

Which feature touches which coverage

Discounts follow the risk the feature reduces. Florida's insurance statute is the clearest public example of how that mapping works, because it spells it out. Under Florida law, rate filings for liability, personal injury protection, and collision coverage must include a premium discount if the insured vehicle has factory-installed four-wheel antilock brakes. Rate filings for personal injury protection and medical payments coverage must include a discount if the vehicle has one or more factory-installed air bags. And every insurer writing comprehensive coverage in Florida must include discount provisions for comprehensive coverage tied to an anti-theft device or vehicle recovery system that is factory installed or approved by the state. Those are Florida's rules, but they mirror how insurers elsewhere tend to slot these discounts.

• Air bags and other passive restraints: discounts on injury coverages such as personal injury protection and medical payments
• Anti-lock brakes: discounts on liability and collision, the coverages that pay when a crash is not avoided
• Anti-theft devices and recovery systems: discounts on comprehensive only, the coverage that pays if the car is stolen
• Collision-avoidance and automated driving systems: Florida law allows, but does not require, discounts on liability, personal injury protection, and collision for factory-installed or retrofitted systems that meet federal standards

Why the savings are smaller than they sound

A discount that applies to one coverage cannot lower the others. If most of your premium is liability, an anti-theft discount on comprehensive barely moves the total. The reverse is also true: if you carry only liability, an airbag discount aimed at medical payments has nothing to attach to.

Factory features are also often baked into the rate before any discount is applied. Insurers know your car's year, make, and model, and the vehicle's own history of injury and theft claims already shapes the base price. Asking for the discount is still worth it, because a line item on your declarations page is easier to verify than a rate class, but do not expect the discount to be large on a car whose safety record is already reflected in the base rate.

Newer driver-assistance features are the murkiest. Whether automatic emergency braking or lane keeping earns a separate line-item discount varies by insurer, and some states, like Florida, permit such discounts without requiring them. The only way to know is to ask your company what it does with those features and to compare that answer across quotes.

How to make sure you are getting credit

The Texas Department of Insurance's advice on its safe car discount applies to every feature on this list: if you have anti-theft devices or add them after you buy a policy, tell your company. Factory equipment is usually identified from the vehicle identification number, but aftermarket equipment is invisible to the insurer until you report it.

• List the safety and security equipment on the car, from the window sticker or owner's manual, before you call
• Ask your insurer for an itemized list of every discount currently applied to the policy, and which coverage each one reduces
• Report aftermarket equipment such as an alarm, immobilizer, or tracking device, and keep the installation receipt
• Re-ask at renewal and when you shop, since the Texas Department of Insurance notes that each company sets its own discounts and amounts

The discounts that actually move the bill

Safety features are a bonus, not a strategy. The Texas Department of Insurance's list of possible discounts also includes completing a defensive driving or driver education course, having more than one car on a policy, holding other policies with the same company, and having no claims and a good driving record. Its saving-money tips add good driver, low-mileage, and good student discounts. Those apply to larger pieces of the premium, and a clean record or a higher deductible tends to do more than any single piece of equipment.

The bottom line: airbags, anti-lock brakes, and anti-theft devices can lower car insurance, but only on the coverage each one affects and only by the amount your company chooses. Tell your insurer what the car has, get the discounts itemized, and then put your energy into the driving record and shopping habits that move the whole bill.