# S-P01-M-02: What is worth paying extra for on mainstream NZ car insurance?

Collected 11 October 2026

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

## ChatGPT

Answer ID: 5375e98e-49da-450e-915b-1b31539c363e

For mainstream car insurance in New Zealand, I’d generally pay extra for cover that prevents a manageable accident from turning into a major financial headache — rather than every add-on offered at checkout.

The best value usually comes from the right level of cover, a sensible excess, and protection for the situations where you’d struggle to pay out of pocket.

## What’s worth paying extra for?

### 1. Excess-free windscreen and glass cover

Often worth it

Windscreen damage from road debris is a practical risk, and modern windscreens with cameras or sensors can be expensive to replace.

Pay extra if glass claims would otherwise attract your normal excess. Check whether windscreen repairs and replacements are already excess-free, and whether sensor recalibration is covered.

For context, AA Insurance lists this as an optional benefit for $69 a year, although the price and terms can change. [Can I include excess-free glass cover on my car policy?](https://www.aainsurance.co.nz/help/article/360020667951-Can-I-include-excess-free-glass-cover-on-my-car-policy)[Comprehensive Car Insurance Policy](https://www.aainsurance.co.nz/manage-policy/policy-documents/comprehensive-car-insurance-policy-document)

### 2. Rental car or alternative transport

Worth it if you rely on your car

This is particularly valuable if you commute by car, have children to transport, or live somewhere with limited public transport.

Check whether the cover applies when your car is stolen as well as damaged, the daily or total dollar limit, and how long it lasts. A policy might cover only a limited hire-car allowance rather than the full cost of a replacement vehicle. [Car & vehicle insurance](https://www.westpac.co.nz/insurance/car-vehicle/)[Comprehensive Car Insurance | Full Vehicle Cover](https://www.state.co.nz/car-insurance/comprehensive)

### 3. Roadside assistance

Worth it if you don't already have it

Useful for flat batteries, flat tyres, lockouts and breakdowns. It can be especially worthwhile for an older car or frequent long-distance driving.

But compare it with existing manufacturer assistance, a separate breakdown plan, or membership benefits. Check towing distances and call-out limits before paying twice for the same service. [Car & vehicle insurance](https://www.westpac.co.nz/insurance/car-vehicle/)[Comprehensive Car Insurance | Full Vehicle Cover](https://www.state.co.nz/car-insurance/comprehensive)

### 4. New-car replacement cover

High value for a recently purchased new car

If your car is written off, qualifying replacement cover may provide a new vehicle rather than a payout based on depreciated value.

This is most attractive while the vehicle is relatively new and expensive to replace. Check the eligibility period, vehicle availability requirements, and whether the benefit is already included. For example, Tower advertises two-year replacement-from-new cover, subject to its policy terms. [Comprehensive Car Insurance Quote](https://www.tower.co.nz/car-insurance/comprehensive/)[Car insurance buying guide](https://www.consumer.org.nz/money/insurance/car-insurance/guide)

### 5. Agreed value instead of market value

Important for some cars, not necessarily an add-on

Agreed value sets the insured amount with your insurer, while market value generally reflects what the vehicle was worth immediately before the loss.

Make sure the insured value is realistic and review it at renewal. Agreed value can provide certainty, but it isn't automatically better if the agreed amount is too low or costs substantially more for little benefit. [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)

## Where I'd save the money

- Roadside assistance you already have: avoid duplicate cover.
- Key replacement cover: useful, but lower priority unless replacement keys for your car are particularly expensive.
- Excess-protection add-ons: compare the extra premium against the excess you'd otherwise pay and the conditions for reimbursement.
- Very high excesses: don't choose one just to save on premiums if you couldn't comfortably pay it after an accident.
- Over-insuring a low-value car: comprehensive insurance can still make sense, but compare its total annual cost with the car's value and the financial hit you could absorb yourself.

Consumer Protection NZ recommends comparing the actual policy benefits, excesses and exclusions rather than choosing on price alone. [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)

## What matters more than the add-ons

Before paying for extras, I'd prioritise these three things:

1. The right base policy. Comprehensive cover is generally worth considering if replacing your own car would be financially difficult. Third-party cover protects against damage you cause to other people's property, but doesn't generally cover damage to your own car.
2. A manageable excess. Compare the premium saving from a higher excess against what you could pay immediately after an accident.
3. Correct driver details and exclusions. Make sure regular and younger drivers are properly disclosed, and check theft excesses, natural-disaster cover and any restrictions on vehicle use. [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)

## My practical recommendation

For a typical privately owned car in NZ, I'd first look for comprehensive cover with a sensible excess, then add excess-free glass and a rental car benefit if they're not already included and the additional premium is reasonable. Add roadside assistance only if you need it.

To make that more specific to your situation: what car do you have, roughly what is it worth, and which insurer are you considering? I can help separate the genuinely useful extras from the ones you can probably skip.

## Gemini

Answer ID: c8b51dd7-febc-4985-bb8c-90d1d7e32784

When evaluating mainstream car insurance in New Zealand, insurers offer various optional add-ons. Whether an extra is "worth paying for" depends heavily on your driving habits, vehicle type, and whether the benefit duplicates coverage you already have elsewhere. 

The most common optional extras can be broken down by value:

---

### 1. Generally Worth Paying Extra For (High Practical Value)

*   **Roadside Assistance / Rescue**
    *   **Cost vs. Value:** Often ranges from $45 to $80 annually (though some insurers bundle it into comprehensive policies for free or include it if you are an AA Member). 
    *   **Why it’s worth it:** If you don't already have roadside cover through an auto club, this pays for itself in a single incident. A single tow truck call, flat battery replacement, or emergency lockout service out of town easily exceeds the annual fee. 
*   **Rental Vehicle / Substitute Transport Cover**
    *   **Cost vs. Value:** Adds a modest amount to your monthly/annual premium.
    *   **Why it’s worth it:** Standard comprehensive insurance repairs your car after an at-fault accident, but it *doesn’t* automatically give you a temporary vehicle while it's in the shop. If you rely on your car daily for commuting, school drop-offs, or work, being without a vehicle for 2 to 3 weeks can force expensive rental car or public transport costs. Check if the policy covers you up to a specific daily limit or number of days (e.g., 14–21 days).

---

### 2. Situational (Worth It Only If Specific Conditions Are Met)

*   **Excess-Free Glass Cover (Windscreen Protection)**
    *   **Cost vs. Value:** Usually adds a small extra fee, protecting you from paying your standard excess (often $400+) on stone chips or cracked windscreens.
    *   **Why it’s situational:** New Zealand’s roads are notorious for loose metal chips and roadworks, making cracked windscreens common. **However**, check your base policy first—some comprehensive policies already include one excess-free glass claim per year. If your base policy doesn't, and you do a lot of rural or open-road driving where trucks throw up stones, this add-on is usually a smart financial buffer. If you mostly drive short urban routes, you may save money by paying out-of-pocket for rare chip repairs instead.
*   **Agreed Value vs. Market Value**
    *   **Cost vs. Value:** Sometimes structured as an option or policy grade adjustment. Market value pays what the car is worth *right before* the accident; agreed value locks in a set payout.
    *   **Why it’s situational:** For rapidly depreciating vehicles or imported models (like common second-hand Japanese imports), "market value" can fluctuate quickly and leave you short. If you drive a car where finding an exact replacement value is volatile, paying a bit extra for an *Agreed Value* contract ensures you know the exact payout floor if it's written off.

---

### 3. Generally Not Worth Paying Extra For (Low Return)

*   **Dealer-Pushed Add-Ons (Asset Protection / Payment Protection)**
    *   **Why to skip:** Consumer NZ frequently warns buyers to scrutinize add-ons bundled hastily into car finance agreements at dealerships. Specialized loan-protection products often carry high markups, strict exclusions, and overlap heavily with standard consumer protections or separate insurance products. It is almost always cheaper to source standalone comprehensive insurance directly from an insurer rather than accepting dealer-arranged packaged extras.

---

### Quick Checklist Before You Buy:
1. **Audit existing coverage:** Check if your credit card, loyalty programs, or auto club membership (like AA) already includes roadside assistance.
2. **Check the base policy:** Verify whether glass cover or temporary transport hire is already standard in the tier of comprehensive insurance you selected.
3. **Compare the math:** Weigh the cost of the add-on against your standard policy excess. If an excess-free glass add-on costs $80 a year, but your standard excess is $400 and you rarely get windscreen damage, you may come out ahead by self-insuring that minor risk.

## AI Overviews

Answer ID: 48270355-157a-449b-baaa-aacd853e4a12

When looking at mainstream New Zealand car insurance (such as AA Insurance, AMI, State, and Tower), most optional add-ons are low-value upsells, though a few specific upgrades provide genuine financial protection.

* * *

What IS Worth Paying Extra For

 * **Excess-Free Windscreen / Glass Cover:**
 * _Why:_ Stone chips and cracked windscreens are the most common auto glass claims in New Zealand (especially on gravel roads or motorways). Adding glass cover usually costs a small amount extra per year, saving you from paying your full standard excess (often $300–$500+) for a broken windshield.

 * **Hire Car / Rental Vehicle Cover (if you rely on your car daily):**
 * _Why:_ If your car is stolen or off the road for major collision repairs, waiting for parts in NZ can take weeks. Standard comprehensive policies don't always include a courtesy/rental car unless you add this option (or use a provider like AMI which bundles limited transport).

 * **Roadside Assistance (if not already bundled):**
 * _Why:_ Flat batteries, flat tires, or locking your keys in the car happen frequently. While some insurers include it for free (or you already hold an AA/Jarden/bank roadside package), adding standalone roadside rescue is cheap peace of mind if you do high-mileage commuting.

 * **Agreed Value (over Market Value):**
 * _Why:_ For imported Japanese vehicles (like a _Toyota Aqua_) or cars where market values fluctuate fast, **agreed value** locks in an exact payout amount at the start of the policy rather than letting the insurer dictate a lower "market value" at claim time.

* * *

What Is NOT Worth Paying Extra For

 * **Key Replacement Add-ons (check your base policy first):**
 * _Why:_ Many mainstream comprehensive policies (like Tower and AMI) already include lost or stolen key/lock replacement up to $500–$1,000 **without** an extra add-on. Don't pay twice for something already baked into comprehensive tier.

 * **Mechanical Breakdown Insurance (MBI) / Credit & Payment Protection (CCI/PPI) sold at car yards:**
 * _Why:_ Consumer NZ heavily criticizes car-yard add-ons, noting that New Zealanders pay hundreds of millions in premiums with very low claim payouts. Furthermore, major mechanical failures on dealer-sold cars are often already covered under the **Consumer Guarantees Act (CGA)**.

 * **Over-the-top Lower Excesses:**
 * _Why:_ Dropping your excess from $500 down to $100 usually spikes your annual premium far more than the statistical likelihood of you making a claim. It is almost always cheaper to take a higher voluntary excess and self-insure minor scuffs.

If you'd like to share **your car's make, model, and year** or **how you use it daily (commute vs. weekend)** , I can help you figure out which specific add-ons make sense for your situation.

## Google AI Mode

Answer ID: 0724b050-58f1-422d-8e93-4d5e8beb823a

When upgrading a standard comprehensive car insurance policy in _New Zealand_ , a few high-value optional extras are generally worth paying a small monthly fee for, while heavily marketed dealer add-ons are best avoided.

**Worth Paying Extra For (Practical Policy Add-ons)**

 * * **Windscreen and Glass Cover (Excess Waiver):** Given New Zealand's prevalent gravel roads, chip and crack repairs are frequent. Paying a few extra dollars a month to waive the excess on windscreen replacements or repairs usually pays for itself after a single stone chip turns into a full crack.

 * **Rental Car / Courtesy Car Extension:** If your vehicle is stolen or undriveable after an accident, waiting for parts or a settlement can take weeks. Adding a temporary replacement vehicle option ensures you can still get to work or manage daily life without scrambling for alternative transport or public transit. [MoneyHub NZ]

 * **Roadside Assistance:** If it isn’t already baked into your comprehensive tier (as it is with select NZ insurers), adding low-cost 24/7 roadside breakdown cover for a flat battery, flat tyre, or locked-in keys is convenient and cost-effective compared to calling an independent tow service on the fly.

 * **Trailer Cover:** If you regularly tow a small utility or camping trailer, adding a modest extension (often covering up to $3,000) directly to your policy is a cheap way to protect it against theft or accidental damage while attached or unhitched at home. [MoneyHub NZ]

 *

* * *

**Not Worth Paying Extra For (What to Skip)**

 * * **Car Yard Add-ons (MBI, GAP, CCI, PPI):** Consumer advocacy groups like **[Consumer NZ](https://www.consumer.org.nz/money/insurance/car-insurance/add-on-car-insurance-products-offer-meagre-benefits-to-consumers)** heavily caution against buying mechanical breakdown insurance (MBI), guaranteed asset protection (GAP), or payment protection insurance pushed at car dealerships. They feature heavy exclusions, low claim payout ratios, and high dealer commissions. Furthermore, significant mechanical failures shortly after purchase are often already covered under the **Consumer Guarantees Act (CGA)**.

 *

If you'd like, share:

 * Your **insurer or vehicle type**
 * Whether you have **access to alternative transport** if your car breaks down

I can help you evaluate **which specific add-ons make financial sense** for your situation.
