Why MBI Claims Get Declined
Mechanical Breakdown Insurance exists to protect vehicle owners from unexpected repair costs — but claims do get declined, and when they do, the consequences can be devastating. Understanding the most common reasons for MBI claim declines helps you avoid the pitfalls and ensures your policy delivers when you need it most.
Reason 1: Pre-Existing Conditions
The pre-existing condition exclusion is the most frequently cited reason for MBI claim declines in New Zealand. If an insurer can demonstrate that a fault was present (or reasonably detectable) before your policy inception date, they can decline to pay for repairs related to that fault.
To protect against this, purchase MBI before any known issues arise, keep records of your pre-policy purchase inspection, and be transparent about any known minor issues at policy purchase. A broker can help you disclose appropriately without unnecessarily inflating your premium.
Reason 2: Failure to Maintain Service Records
Most NZ MBI policies require you to maintain the vehicle according to the manufacturer's recommended service schedule. If you make a claim and cannot produce evidence of regular servicing (receipts, dealer stamp, service logbook), the insurer may decline the claim citing maintenance failure as a contributing cause.
Keep all service receipts regardless of where you have the vehicle serviced — even oil changes matter. For used vehicles, obtain as much service history documentation as possible at purchase.
Reason 3: Authorising Repairs Before Calling the Insurer
A common and costly mistake: telling the mechanic to "go ahead" before contacting your MBI insurer. Most policies require you to notify the insurer and obtain pre-authorisation before repairs begin. Unapproved repairs may not be covered, even if the failure itself would have been covered had you called first.
Reason 4: Excluded Components
Many policy-holders are surprised to find that a specific failed component is excluded from their policy. Common exclusions that cause surprise: timing belts (wear item in many policies), clutch friction material (wear item), catalytic converters (exhaust system exclusion), and certain electronic accessories. Read your policy schedule's component list carefully when purchasing — ask your broker to explain any ambiguous items.
Reason 5: Misrepresentation at Inception
If the insurer discovers that material information was withheld or misrepresented when the policy was purchased — for example, a known mechanical issue, undisclosed modifications, or incorrect mileage — they may decline the claim and potentially void the policy entirely. Be accurate and complete when disclosing vehicle information. The consequences of non-disclosure far outweigh any short-term premium savings.
Disclaimer
This article is for general informational purposes only and does not constitute financial advice. MBI products vary by provider — always read your policy schedule carefully. BreakdownInsurance.co.nz is operated by Cover4You Limited, an independent information service. We are not a licensed financial adviser.