Autosure MBI Review 2026: Best Mechanical Breakdown Insurance NZ?

Step 1. Who Should Actually Consider Autosure MBI?

MBI is not for everyone, and no honest review should pretend otherwise. Whether Autosure MBI makes sense for you depends almost entirely on what car you drive, how old it is, and how comfortable you are absorbing a surprise repair bill.

The Data:

The average cost of a transmission replacement in New Zealand sits around $9,000 including parts and labour. An air conditioning system repair runs roughly $8,000. A head gasket replacement comes in at around $5,500. European vehicles tend to cost significantly more again. These are the kinds of bills MBI is designed to protect against.

Your standard comprehensive car insurance covers accidents, theft, fire and weather damage. It does not cover mechanical or electrical failures. That means if your engine, gearbox, ECU or turbo fails through no fault of your own, your car insurer will not help. MBI fills that gap.

The Lesson:

Autosure MBI is most likely to be worth it if you tick one or more of these boxes:

• Your car is out of manufacturer warranty. This is the single biggest trigger. Once the factory warranty expires, you carry 100% of the mechanical risk.

• You drive a used or imported vehicle. Older vehicles and used imports have a higher likelihood of unexpected mechanical failure.

• You drive a European car. Parts and labour on European makes are significantly more expensive. One Autosure reviewer on Google noted they had cover on an Audi A4 for 2.5 years and found it well worth it for a European vehicle.

• You could not absorb a $5,000 to $9,000 repair bill without warning. If that kind of hit would blow your budget, MBI is essentially a hedge against the worst case.

• You are financing the vehicle. A breakdown plus ongoing loan repayments is a painful combination. MBI protects your cash flow.

MBI may be less worth it if:

• Your car is still under manufacturer warranty (you would be paying for duplicate cover).

• You recently bought from a dealer. The Consumer Guarantees Act (CGA) requires dealers to sell vehicles of acceptable quality, which may cover major mechanical failures in the early months of ownership.

• Your vehicle is low value and you would rather self-insure the risk.

The Action:

Check your vehicle's warranty status before spending a dollar on MBI. If the warranty has expired or is about to, get a quote and weigh it against the potential repair costs for your make and model. You can check MBI coverage online through Quashed.

Step 2. What Autosure MBI Covers (Extreme Plus vs Smart Cover)

Autosure offers two MBI tiers, and the difference matters. Picking the wrong one could mean the component that fails is not on your policy.

The Data:

Extreme Plus is the top-tier option with an open claim limit (up to the vehicle's market value). It covers:

✓ Engine, transmission (auto and manual), fuel system and turbo

✓ Electrical, clutch, differential, suspension, steering

✓ Air conditioning and cooling system

✓ Entertainment systems, heated seat elements and communication systems

✓ Repatriation costs (up to $500)

✓ Accommodation, rental car hire or return home travel (up to $1,500)

✓ Consumable items related to the repair (up to $750)

✓ Additional covers

✓ Electric Vehicle Package

✓ Unlimited 24/7 AA Roadservice

Smart Cover is the essential option, designed for higher-mileage vehicles with a claim limit capped at $5,000. It covers the core mechanical and electrical components but strips out the luxury items. It includes:

✓ Repatriation costs (up to $250)

✓ Accommodation, rental car hire or return home travel (up to $500)

✓ Electric Vehicle Package

✓ Unlimited 24/7 AA Roadservice

What it costs: A real example

We priced Autosure MBI for a 2013 Toyota Aqua Hybrid (market value $9,205) to give you a concrete benchmark:

That means for a common Japanese hybrid worth just over $9,000, the comprehensive Extreme Plus cover costs roughly $85 per month, and Smart Cover comes in at around $51 per month. European vehicles, performance cars and higher-value vehicles will generally attract higher premiums.

Want to see what Autosure MBI costs for your car? Use the free Quashed Market Scan to get a live MBI quote for your vehicle in under two minutes.

Prices shown are for a 12-month term with $300 excess, sourced directly from Autosure. Your quote will vary based on make, model, age, mileage, cover period and excess selected.

The Lesson:

If your car is relatively new and you want broad protection, Extreme Plus is the stronger choice. If you are covering an older or higher-mileage vehicle and just want the core drivetrain and mechanical systems protected, Smart Cover does the job at a lower price point. Note the significant gap in claim limits: Extreme Plus is open (capped at the vehicle's market value), while Smart Cover is hard-capped at $5,000, which may not cover a full transmission or engine replacement.

What is NOT covered (read this carefully): Pre-existing faults, wear and tear, manufacturer recalls or design faults, routine servicing, accident or fire damage, and cosmetic items. Specific exclusions include the chassis, catalytic converters, cambelts, tyres, batteries, exhaust systems, light bulbs, fuel tanks and keys. Always read the full policy wording before purchasing.

The Action:

Autosure is upfront about what their policies cover and exclude, which makes it easy to check the key details before you buy. If you are comparing providers, knowing the differences in cover can help you pick the right tier for your vehicle. For more on how MBI and car insurance work together, see our guide on MBI vs Comprehensive Car Insurance NZ.

Step 3. The Pros and Cons of Autosure MBI (Honest Assessment)

No product is perfect. Here is what we found stacks up well and where the caveats sit.

What Autosure does well:

• Pricing transparency. Autosure is one of the few NZ MBI providers that offers upfront online pricing. Many competitors require you to get a quote at a dealership finance desk, where you have zero ability to compare.

• Unlimited AA Roadservice. Both tiers include unlimited 24/7 AA Roadservice callouts for the life of the policy. Some competitors cap callouts at three to six per year.

• Strong customer reviews. Autosure holds a 4.6 out of 5 rating on Google Reviews with more than 2,950 reviews. Customers frequently highlight fast claims turnaround, friendly staff and practical support when stranded away from home.

• NZ owned, long track record. Autosure Insurance Limited has been operating since 1971 and is part of Turners Automotive Group (NZX listed), with a B++ (Good) financial strength rating from A.M. Best.

• Large repairer network. Over 700 authorised repairers nationwide means you are unlikely to be far from one, even in regional areas.

• EV and hybrid cover. Both tiers include an Electric Vehicle Package, which is increasingly relevant as more Kiwis drive hybrids and EVs.

What to keep in mind:

• Claims must go through Autosure's repairer network. You cannot use your own mechanic for an MBI claim. All repairs must be carried out by one of Autosure's 700+ Authorised Repairers. The upside is the network is nationwide, so you are unlikely to be far from one.

• Smart Cover's $5,000 claim limit may not be enough. If your vehicle needs a major repair like a transmission replacement (around $9,000), Smart Cover's cap could leave you short. Extreme Plus has an open claim limit up to the vehicle's market value.

• Premium is paid as a lump sum. This is standard across all NZ MBI providers, but it is still worth knowing upfront. The full premium for the entire cover period is due in a single payment, and on Extreme Plus that can exceed $1,000 for 12 months of cover.

• No online MBI claims portal. Unlike Autosure's car insurance (which can be lodged online), MBI claims must be made by phone (0800 809 700) or email (claims@autosure.co.nz). Not a dealbreaker, but worth knowing if you prefer doing everything online.

The Lesson:

Autosure's strengths are genuine: the pricing transparency, the AA Roadservice inclusion, and the claims experience are hard to argue with. The weaknesses are largely shared across the entire MBI industry (exclusions, servicing conditions, lump-sum payment). Where Autosure stands out is that it gives you the tools to compare and decide before you sit down at a dealer's desk.

The Action:

Get a personalised Autosure MBI quote through Quashed. Enter your rego and vehicle specs to see exactly what cover is available and what it will cost for your specific car.

Step 4. What Real Customers Say About Autosure MBI

Reviews tell you what the policy wording does not. We looked at Google Reviews, Reddit discussions and independent sources to see how Autosure performs when it actually matters.

The Data:

Autosure holds a 4.6 out of 5 rating on Google Reviews across more than 2,950 reviews. That is one of the highest ratings of any vehicle insurer in New Zealand.

Common themes from positive reviews include fast claims turnaround, helpful and honest staff, and practical support for drivers stranded away from home (including towing coordination, rental car assistance and accommodation allowances). One Audi owner reported that Autosure had been consistently fair and helpful across 2.5 years of claims on a European vehicle. Another reviewer described the claims process as quick, easy and far better than the standard insurance experience.

On Reddit, one user shared that Autosure covered a full transmission replacement on a previous vehicle, describing it as a genuine budget saver. AA MBI customers (whose policies are underwritten by Autosure) have also reported smooth claim experiences.

On the critical side, some customers note that the servicing requirements caught them off guard. If you do not maintain proof of regular servicing, Autosure can decline a claim. This is clearly stated in the policy wording, but not every buyer reads it at purchase.

The Lesson:

The review data paints a consistent picture: Autosure's claims handling is a strength, not a weakness. Where complaints arise, they tend to be about the exclusions or servicing conditions, rather than about Autosure failing to honour a valid claim. The takeaway is simple: read the policy, keep your service records, and the experience is likely to be a positive one.

The Action:

Keep every service receipt from day one. If your car breaks down, call Autosure (0800 809 700 for claims, 0800 581 581 for roadside assistance) before authorising any repairs, and use an Authorised Repairer.

Step 5. How to Claim on Autosure MBI (Step by Step)

Knowing how the process works before you need it takes the stress out of a breakdown.

The Data:

1. Call Autosure. Roadside assistance: 0800 581 581. Claims: 0800 809 700 or email claims@autosure.co.nz. Have your policy number, vehicle registration and odometer reading ready.

2. Get to an Authorised Repairer. Autosure will help you find the nearest one from their network of 700+. If the car can be driven safely, take it there. If not, arrange towing (some policies include towing cover).

3. Present your policy. The repairer assesses whether the breakdown constitutes a valid claim and contacts Autosure.

4. Assessment. You may need to provide a claim form, proof of servicing and other documentation. If the fault cannot be diagnosed without dismantling, Autosure may authorise further investigation.

5. Repair and excess. Once approved, the repairer completes the work. You pay your excess. Autosure covers the approved repair costs. If you broke down more than 100 km from home and the repair takes more than 24 hours, you may also be entitled to allowances for towing, rental car, accommodation or travel costs (up to $1,500 on Extreme Plus or $500 on Smart Cover).

The Lesson:

Two things trip people up. First, you must use an Authorised Repairer. If you let your own mechanic start work without Autosure's approval, the claim may be declined. Second, proof of servicing is non-negotiable. If you cannot show your car was serviced within the intervals specified in the policy, the claim can be rejected.

The Action:

Save Autosure's claims number (0800 809 700) in your phone now. Keep digital copies of all service receipts. If something goes wrong, call Autosure first, before you agree to any repairs.

Final Verdict: Is Autosure MBI Worth It in 2026?

For Kiwi drivers with a used vehicle out of warranty, especially those running a European make or a car financed with a loan, Autosure MBI is one of the strongest options in the NZ market. The combination of pricing transparency, unlimited AA Roadservice, a large repairer network, a B++ financial strength rating and consistently strong customer reviews puts it at or near the top of the category.

It is not a product for everyone. If your car is still under manufacturer warranty, or you have a solid emergency fund and a low-risk Japanese vehicle, you may not need it. But if a surprise $9,000 transmission bill would hurt, Autosure MBI is a straightforward way to cap that risk. For a 2013 Toyota Aqua Hybrid worth $9,205, Extreme Plus comes in at $1,018.92 per year and Smart Cover at $610.66 per year, both with a $300 excess. That is the price of certainty.

The single most important thing you can do is compare before you buy, especially before you sit down at a dealer's finance desk. Dealer pricing on MBI can be thousands more than buying direct.

Run a free Quashed Market Scan to compare car insurance and MBI from leading NZ providers, see what you could save, and make a smarter decision about protecting your vehicle in 2026.

Related Reading

The Quashed team has more guides for Kiwi drivers shopping for car insurance and vehicle protection:

• MBI vs Comprehensive Car Insurance NZ 2026. When you need one, the other, or both.

• Autosure Car Insurance Review NZ 2026. Our full review of Autosure's comprehensive, third party and specialist vehicle insurance.

• Ultimate NZ Guide to Car Insurance. Everything you need to know about choosing the right car insurance in New Zealand.

• Cheap Car Insurance NZ 2026. Practical, data-backed strategies to lower your premium.

• Comprehensive vs Third Party Car Insurance. A clear breakdown of the cover tiers.

• Your Guide to Picking Excess. How to balance premium and out-of-pocket risk.

• Car Ownership Costs NZ 2026. Rego, WoF, fuel, insurance and total annual running costs.

• Comparing Insurance Costs for the Most Popular Cars in NZ. How model choice affects your premium.

Frequently Asked Questions: Autosure MBI 2026

What is Autosure Mechanical Breakdown Insurance?

Autosure MBI covers the cost of repairing sudden and unforeseen mechanical or electrical failures in your vehicle. It is underwritten by Autosure Insurance Limited, a New Zealand-owned insurer operating since 1971. It covers failures that comprehensive car insurance does not, such as engine, transmission and electrical system breakdowns.

How much does Autosure MBI cost?

Premiums vary depending on your vehicle's make, model, age, mileage, the cover tier you choose, the policy length and your excess. As a benchmark, a 2013 Toyota Aqua Hybrid (valued at $9,205) costs $1,018.92 per year for Extreme Plus or $610.66 per year for Smart Cover, both with a $300 excess and 12-month term. Japanese and Korean vehicles generally attract lower premiums than European makes. Get a quote through Quashed to see pricing for your vehicle.

Does Autosure MBI cover electric and hybrid vehicles?

Yes. Both Extreme Plus and Smart Cover include an Electric Vehicle Package covering auxiliary engines, drive units (inverters), dual charge systems and EV batteries, subject to the vehicle's age at claim time.

What is not covered?

Common exclusions include pre-existing faults, wear and tear, manufacturer recalls, routine servicing, accident or fire damage, and cosmetic items. Specific parts excluded include the chassis, catalytic converters, cambelts, tyres, batteries, exhaust systems, light bulbs, fuel tanks and keys. Always read the full policy wording.

Do I have to service my car to keep the policy valid?

Yes. Regular servicing is a strict condition of Autosure MBI. You must maintain your vehicle in good repair, hold a current WoF and meet the minimum servicing intervals in the policy wording. Keep all service receipts.

Can I transfer the policy if I sell my car?

If you sell privately, Autosure may permit the transfer to the new owner. Transfers are not permitted if the car is sold to or through a dealer, or if you have had a claim accepted. Contact support@autosure.co.nz to request a transfer.

Is MBI compulsory when buying from a dealer?

No. MBI is never compulsory, even if you are financing. You are under no obligation to buy from the dealer, and you can often find better value by comparing independently through Quashed.

How does Autosure compare to other MBI providers?

Use the Quashed Market Scan to compare MBI from multiple NZ providers in one place. Enter your vehicle details and see what cover and pricing is available in under two minutes.