# B-T11-M-01: How do NZ car insurers assess modified, imported or unusually valuable vehicles?

Collected 11 October 2026

[Car insurance study](https://nzbrands.ai/research/insurance/car-insurance)

## ChatGPT

Answer ID: 40eb12ae-512e-4242-9218-56dfe4872573

In New Zealand, insurers generally assess modified, imported and unusually valuable cars by looking at what the vehicle is, how much it would cost to replace or repair, how it is used, and how its modifications or history affect the risk.

The important distinction is that getting a car insured is not necessarily the same as getting it insured for its full value. An insurer might agree to cover a vehicle but apply a standard market-value settlement, exclude certain modifications, impose conditions, or require a specialist policy.

## 1. What insurers assess

Modified vehicles

Insurers consider engine upgrades, turbochargers, suspension changes, non-standard wheels, exhausts, body kits, custom paint and other alterations. They may accept the car with an additional premium, excess or special conditions, or decline it. Some require written approval. [Duty of Disclosure: What to Tell Your Insurer](https://www.icnz.org.nz/individuals/consumer-guides/things-you-need-to-tell-your-insurer/)[How Are Modified Vehicles Covered](https://www.ami.co.nz/faqs/how-are-modified-vehicles-covered)[Vehicle Policy Wording](https://starinsure.co.nz/policy-documents/vehicle-policy-wording/)

Imported vehicles

They assess the make, model, year, exact specification, parts availability, repair costs and local resale market. A rare Japanese import, grey import or model never officially sold in New Zealand may need extra documentation or specialist underwriting. These factors can affect both acceptance and valuation.

Unusually valuable or collectible cars

They may assess condition, originality, rarity, restoration quality, provenance, specialist valuations and comparable sales. A standard market-value policy may not reflect a collector car's true worth, so agreed-value, certified-value or specialist classic-car cover may be worth discussing. [Car insurance buying guide](https://www.consumer.org.nz/money/insurance/car-insurance/guide)[Vehicle Policy Wording](https://starinsure.co.nz/policy-documents/vehicle-policy-wording/)[Classic Vehicle Insurance Policy](https://www.aainsurance.co.nz/manage-policy/policy-documents/classic-vehicle-insurance-policy-document)

## 2. How they decide what the car is worth

Two common valuation methods are important in New Zealand. [Car insurance](https://www.consumerprotection.govt.nz/help-product-service/cars/paying-registering-insuring-car/car-insurance)[Car insurance buying guide](https://www.consumer.org.nz/money/insurance/car-insurance/guide)

| Method | How it works | What to watch |
| --- | --- | --- |
| Market value | The vehicle's value immediately before the loss, assessed under the policy's valuation rules. | Modifications and rarity may not add as much value as you expect. |
| Agreed value | You and the insurer agree on a value, recorded in the policy schedule. | Check whether modifications and accessories are included and whether the value changes at renewal. |
| Certified or fixed value | Some specialist policies offer a valuation-based or specified-value arrangement. | The insurer's definition, valuation requirements and settlement conditions determine what you actually receive. |

An agreed value is not necessarily a guarantee that every component, restoration expense or modification will be paid for separately. The policy wording still matters.

For example, AMI explains that its agreed value can be adjusted at renewal, while its sum-insured arrangements can be subject to a market-value limit. [Is My Car Insured For Agreed Value Or Market Value?](https://www.ami.co.nz/faqs/is-my-car-insured-for-agreed-value-or-market-value)[My Car Is Insured For Agreed Value. Does The Value Remain Unchanged?](https://www.ami.co.nz/faqs/i-have-my-vehicle-insured-for-agreed-value-does-the-value-remain-the-same-year-after-year)

## 3. What evidence might they request?

For a modified, imported or high-value car, prepare the following where relevant:

- Vehicle details: VIN, registration, year, exact model and variant, import history and specification.
- Modification list: Parts fitted, performance upgrades, installation invoices, receipts and any engineering or certification documents.
- Valuation evidence: A recent independent valuation, comparable NZ sales, purchase invoice or auction records.
- Condition and originality: Current photographs, service history, restoration records and evidence of rare factory options.
- Security and use: Where the vehicle is kept, anti-theft devices, annual mileage, intended use and who will drive it.

An insurer may not require every item. However, strong documentation helps establish both the risk and the amount of cover requested. The Insurance Council of New Zealand advises disclosing relevant information even if you are unsure whether the insurer specifically needs it. [Duty of Disclosure: What to Tell Your Insurer](https://www.icnz.org.nz/individuals/consumer-guides/things-you-need-to-tell-your-insurer/)[Motor Insurance: What You Need to Know](https://www.icnz.org.nz/individuals/motor/)

## 4. Road legality and insurance are separate

A car having a current Warrant of Fitness (WoF) does not, by itself, establish that an insurer has accepted its modifications.

New Zealand Transport Agency Waka Kotahi says certain modifications, including some engine, steering and suspension changes, require Low Volume Vehicle (LVV) certification. Imported modified vehicles may also need specialist certification before they can be registered for road use. [Modifying your vehicle](https://www.nzta.govt.nz/vehicles/warrants-and-certificates/modifying-your-vehicle)[Vehicle Inspection Portal](https://vehicleinspection.nzta.govt.nz/virms/entry-certification/i-and-c/required-documentation-and-registration/specialist-certification?SQ_DESIGN_NAME=print&SQ_PAINT_LAYOUT_NAME=print)[Scratchbuilt or modified vehicles](https://nzta.govt.nz/vehicles/importing-a-vehicle/2-complying-with-vehicle-standards-and-providing-evidence/scratchbuilt-or-modified-vehicles)

In practice, you should establish both that the vehicle meets applicable road requirements and that your insurer has accepted its actual specification.

## 5. What if a standard insurer will not cover it?

You can approach a specialist vehicle insurer or a broker experienced in modified, performance, classic or collector vehicles.

For example, Star Insure publishes specialist vehicle policy wording covering modifications and several different valuation arrangements. Check its current eligibility criteria and settlement terms rather than assuming every vehicle qualifies. [Vehicle Policy Wording](https://starinsure.co.nz/policy-documents/vehicle-policy-wording/)

Useful starting points:

- [Star Insure — vehicle policy wording](https://starinsure.co.nz/policy-documents/vehicle-policy-wording/)
- [AMI — how modified vehicles are covered](https://www.ami.co.nz/faqs/how-are-modified-vehicles-covered)
- [Consumer Protection NZ — car insurance guide](https://www.consumerprotection.govt.nz/help-product-service/cars/paying-registering-insuring-car/car-insurance)

## 6. Questions to ask before accepting a policy

When obtaining quotes, ask the insurer to confirm in writing:

1. Have you accepted the exact import specification and every listed modification?
2. Is the policy based on market value, agreed value, certified value or another arrangement?
3. Are the modifications and aftermarket parts included in the insured value, and are there any separate limits?
4. If the vehicle is written off, how will you value a rare model that has few comparable NZ sales?
5. Can repairs use genuine imported parts or specialist repairers, and are freight and overseas parts costs covered?
6. Are there restrictions on track days, motorsport, club events, storage or occasional use?
7. What happens to the cover and premium if I modify the car again or its value rises?

The key principle: get the insurer's written acceptance of the car as it actually exists, and make sure the settlement method reflects what it would genuinely cost to replace. A high sum insured alone does not guarantee that result.

## Gemini

Answer ID: 755d33d2-5b3e-4724-94e8-a966094f491d

In New Zealand, standard car insurance policies are generally designed for factory-standard vehicles driven for everyday use. When a vehicle falls outside these parameters—whether it is modified, imported, or unusually valuable (such as a classic, exotic, or collector car)—New Zealand insurers apply specific assessment criteria to evaluate risk, determine premiums, and structure payouts.

---

### 1. Modified Vehicles
Insurers define a modification as any change from the manufacturer's original specification (including engine tuning, suspension drops, body kits, custom paint/wraps, or aftermarket wheels). 
* **Full Disclosure Obligation:** Owners must declare all non-standard changes. Undisclosed modifications can lead to a claim being declined or a policy being voided.
* **Road Legality & LVV Certification:** New Zealand Transport Agency (NZTA) rules dictate that significant modifications (such as structural, steering, or suspension alterations) require a **Low Volume Vehicle (LVV) certification** to legally obtain a Warrant of Fitness (WoF). Insurers routinely check that a modified vehicle is legally compliant for New Zealand roads; an uncertified or unroadworthy modification can breach policy terms.
* **Listing and Valuation:** Insurers typically require modifications to be explicitly listed on the policy schedule. Policies may cover the car itself while excluding or capping payout limits on aftermarket parts unless an "accessories and modifications" extension is added and paid for.

### 2. Imported Vehicles
Grey imports (frequently Japanese domestic market or JDM vehicles) and personal imports are common in New Zealand, but they introduce unique underwriting risks.
* **Compliance and Entry Certification:** Insurers verify that the vehicle has successfully completed official NZTA entry certification and registration. 
* **Theft Risk and Security:** Many imported models lack factory-fitted immobilisers approved to New Zealand standards. Insurers frequently assess the specific theft risk of the model, often imposing a mandatory "theft excess" or requiring an approved aftermarket alarm, immobiliser, or GPS tracking device to be installed.
* **Parts Availability and Repair Costs:** Because exact trim levels or engine configurations of an import may not have been sold new in New Zealand, insurers evaluate how difficult and expensive it will be to source replacement parts or match specialized paint formulations following an accident.

### 3. Unusually Valuable or Classic Vehicles
Standard "market value" formulas often fail to capture the true worth of rare, vintage, or high-end exotic vehicles.
* **Agreed Value Policies:** Rather than relying on depreciated market guides, owners of unusually valuable or classic cars typically use **Agreed Value** cover. This requires a mutually agreed-upon sum insured backed by supporting evidence, such as recent professional valuations, purchase invoices, or extensive photographic proof of a restoration.
* **Specialist Insurers vs. Mainstream Providers:** While some mainstream NZ insurers handle minor variations, high-value collections or true classics are often placed with specialist insurers. 
* **Restricted Use and Storage Conditions:** To manage risk, policies for valuable or classic vehicles often feature tailored terms, such as restricted annual mileage, mandatory secure garaging (e.g., a locked garage overnight), and conditions specifying that the car is used primarily for leisure, club runs, or exhibitions rather than daily commuting.

---

Are you looking to insure a specific type of vehicle, and do you need help understanding what documentation an insurer might ask for?

## AI Overviews

Answer ID: ae258e3d-952c-421c-ab64-cffea6f38cf5

In New Zealand, standard car insurance policies are built for mass-market vehicles. When it comes to **modified, imported, or unusually valuable cars** , insurers use stricter underwriting filters, separate legal compliance checks, and distinct valuation methods to assess and price risk.

The assessment process is broken down into four core pillars:

* * *

1\. The Legal vs. Insurance Split (Compliance)

NZ insurers strictly separate **road legality** from **insurance approval**. Just because a vehicle is legal to drive does not mean an insurer is obligated to cover it.

 * **Low Volume Vehicle (LVV) Certification:** For heavily modified cars (e.g., modified suspension, turbo conversions, aftermarket racing seats), insurers will ask if the car requires or has an LVV Cert plate. If it requires one but doesn’t have it, standard policies are void.

 * **Import Entry Certification:** For recently imported vehicles, insurers verify that the car has successfully passed Waka Kotahi (NZTA) entry certification and is not flagged as an unrepairable or statutory write-off from overseas (a common issue with vehicles originating from Australia).

2\. Mandatory Disclosures & Component Approvals

New Zealand operates under a duty of disclosure. Mainstream insurers like AMI Insurance, State, and Tower Insurance require you to list every modification—from cosmetic full-body kits and alloy wheels to high-performance exhaust upgrades and engine remapping.

 * **Mainstream Insurers:** Often accept minor cosmetic or mild performance changes but might charge a higher premium or add a **"modification excess"** (an extra penalty if you claim). They may exclude coverage for the aftermarket parts themselves if they aren't written explicitly into the policy.

 * **Specialist Insurers:** For heavily modified or high-value imports (e.g., JDM performance cars, classic American muscle), owners typically go to enthusiast brokers or specialist underwriters like Star Insurance. They assess modifications collectively to gauge the increased risk of theft or accidents.

3\. Valuation Methods: Market Value vs. Agreed Value

For unusual or rare cars, the method used to settle a total loss is highly critical:

Valuation Basis| How Insurers Apply It to Unique Vehicles| Best Suited For
---|---|---
**Agreed Value**| A fixed sum decided by you and the insurer at policy inception. If the car is stolen or written off, you get that exact amount. Insurers usually demand proof—like receipts, professional independent appraisals, or photos—to validate a high agreed sum.| Modified cars, rare imports, and vintage collectibles where open market prices fluctuate wildly.
**Market Value**| The insurer calculates what the car was worth on the open market right before the accident based on NZ sales data. **Warning:** Standard market algorithms rarely account for the true cost of rare parts or custom labor.| Standard un-modified grey imports that have plenty of historical sales data on Trade Me.

4\. Parts and Repair Sourcing Risk

A vehicle’s value isn't the only metric evaluated; **repair complexity** drives up premiums. If you own a rare import or uniquely valuable vehicle, insurers look closely at:

 * **The "Grey Import" Penalty:** If parts must be ordered from Japan, Europe, or America, the insurer faces prolonged car-rental storage fees and expensive overseas freight.

 * **Specialist Labor:** Rare bodywork finishes, custom carbon fiber, or intricate engine setups require specialized NZ mechanics rather than the insurer’s preferred high-volume repair yards.

* * *

If you are looking to get cover for a specific vehicle, could you tell me:

 * What **make, model, and year** is the vehicle?

 * What **specific modifications** (performance or cosmetic) have been done?

 * Is it a **fresh import** , or has it been registered in NZ for a while?

With these details, I can provide more specific guidance on which NZ insurance pathways fit best.

## Google AI Mode

Answer ID: 9f7acbd6-fb18-4b59-bd96-6a160f295f37

New Zealand car insurance providers assess non-standard vehicles—such as those that are modified, imported, or unusually valuable—by evaluating how these factors shift the risk profile, theft vulnerability, replacement costs, and repair complexity compared to a standard factory-spec vehicle.

The primary assessment criteria used by NZ insurers include:

 * * **Modified Vehicles** : Insurers broadly define a modification as any change from the manufacturer’s original factory specification. This includes performance upgrades, suspension drops, alloy wheels, body kits, exhaust work, and custom interior or audio tech. Assessors look at whether the modification increases performance, changes handling, alters the vehicle's safety rating, or attracts a higher theft risk. Crucially, the modifications must be fully disclosed and often specifically listed on the policy. If accepted, insurers may cover the modifications up to an agreed sum insured, though unlisted modifications may be excluded or severely limited in a claim. Legality is also a baseline requirement; the vehicle must comply with New Zealand Transport Agency (NZTA) standards and WOF requirements.

 * **Imported Vehicles** : Japanese imports (JDM) or parallel imports are common in New Zealand, but they require specific underwriting scrutiny. Insurers assess imports heavily around **security features** —many imported models historically lacked factory-fitted immobilisers standard to NZ-new equivalents, which can prompt requirements for aftermarket security installation, higher theft excesses, or adjusted premiums. Sourcing replacement parts for imports can also change the calculation; insurers factor in whether specialised or overseas shipping will be required for repairs.

 * **Unusually Valuable Vehicles** : For classic, collector, exotic, or high-value modified cars, standard market-value policies are often replaced or supplemented by **agreed value** contracts. Insurers will request comprehensive evidence of value (such as professional independent valuations, purchase receipts, or photographic proof of condition) to lock in a fixed payout figure in the event of a total loss. Premiums reflect the specialized nature of the vehicle, and policies may come with strict conditions regarding storage (e.g., locked secure garages), restricted annual mileage, or approved driver age limits.

 *

If you have a specific vehicle in mind, let me know:

 * Is it **imported, modified, or high-value** (or a mix)?
 * Is it used as a **daily driver** or a **weekend/classic car**?

I can give you a more tailored breakdown of what NZ insurers typically look for.