Modified Car Insurance

Modified car insurance covers vehicles modified from their original factory specifications, especially through custom parts or equipment. It comes as a custom parts and equipment (CPE) add-on to a standard car insurance policy, though specialty providers offer it as a separate policy. Standard car insurance policies often exclude or limit coverage for modifications, making specialized coverage essential to protect your investment.

A modified car is any vehicle changed from its original factory specifications, and what qualifies as a modification varies by insurer. Disclose any changes to your insurer before or immediately after making them. An undisclosed modification can void your policy or result in a denied claim. Modifications range from performance upgrades like engine tuning and suspension kits to aesthetic changes like body kits and aftermarket wheels, as well as interior additions and accessibility features. Not all modifications increase your car's value. Some lower its actual cash value, which reduces what your insurer pays if the car is totaled.

Each insurer applies its own guidelines for what counts as a modification. Performance upgrades tend to raise premiums because they increase risk exposure. Aesthetic changes may or may not affect your rate depending on whether they change the vehicle's value. Accessibility equipment is often treated separately, and some insurers exclude it from surcharges entirely.

Modifying a car increases insurance costs because upgrades change how insurers assess the vehicle's value and risk profile. High-value modifications attract theft, and performance upgrades signal higher risk at speed. Modifications can raise or lower your car's actual cash value depending on the type, which affects your payout if the car is totaled. Tell your insurer about any change before you make it.

Riskier or more expensive modifications raise premiums. Tell your insurer before making changes — an undisclosed modification can get you dropped from your policy.

Modification types that push rates up:

• Custom parts increase theft risk because they make the vehicle a more valuable target.
• Aftermarket parts cost more to replace than factory components.
• Performance upgrades like engine tuning or exhaust systems raise your risk profile, particularly on sports cars.
• Specialty parts take longer to source, which extends repair timelines and increases claim costs.
• Value-boosting upgrades raise your car's actual cash value, which increases your insurer's exposure on a total loss claim.

Safety improvements and theft deterrents can qualify for car insurance discounts.

Modification types that bring rates down:

• Anti-theft systems, including GPS tracking, kill switches, immobilizers and steering wheel locks, reduce theft risk and can qualify for a discount.
• Safety upgrades like roll cages or racing harnesses reduce accident severity and may lower your rate depending on the insurer.
• Defensive technology such as backup cameras and collision avoidance systems lowers accident frequency and is recognized by most insurers as a rate factor.
• Value-reducing modifications lower the car's actual cash value, which reduces the insurer's payout ceiling on a total loss claim.

Standard car insurance won't cover modified car parts. You need custom parts coverage, which insurers offer as an add-on. Without it, you'll pay out of pocket when those parts are damaged or stolen.

Failing to disclose modifications can void your policy. Without valid coverage, you're responsible for damages, injuries and legal costs out of pocket. Insurers treat undisclosed modifications as material misrepresentation, which gives them grounds to cancel your policy or deny a claim regardless of fault. Deliberately withholding modification details to avoid a premium increase can constitute insurance fraud, which carries legal penalties and affects your ability to get coverage in the future.

The best insurance for modified cars is a policy with custom parts coverage. When shopping for auto insurance, look for companies that offer this add-on coverage. It covers damage to permanently installed custom parts.

Before purchasing a policy, review all terms and features included. Compare quotes from different modified car insurance companies to find the best coverage for your modifications and budget.

Standard policies aren't built for heavily modified or high-value vehicles. These specialty insurers cover what a standard carrier won't, from agreed value protection on classics to track day coverage for performance builds.

Check state laws before modifying a vehicle or buying one that's already been modified.

Standard policies exclude custom upgrades, but modified car insurance covers them. Performance upgrades, aesthetic changes and accessibility equipment all require disclosure and appropriate coverage. Tell your insurer what you've done before assuming you're covered.

Get quotes from at least three insurers. Custom parts coverage can be added to an existing policy or you can move to a specialty insurer that focuses on modified vehicles. Your coverage level should match your vehicle's true value after modifications.

MoneyGeek answers frequently asked questions to help you better understand auto insurance for modified cars.