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Vehicle Modifications in NSW CTP Claims: How SIRA's Rules Apply

This article explains how SIRA assesses vehicle modifications in NSW CTP claims, including the evidence required and how modifications affect compensation. It outlines practical steps for claimants and highlights when to seek legal advice.

Current as at 17 October 2026

How SIRA Assesses Vehicle Modifications in NSW CTP Claims

If you've suffered a disabling injury in a motor vehicle accident and require vehicle modifications like hand controls or mobility aids, the NSW Compensation and Rehabilitation Authority (SIRA) has specific rules to assess your claim. SIRA evaluates whether the modification is directly related to your injury and necessary for your recovery. For example, if your accident caused a spinal injury requiring a hand control aid, SIRA will consider this as part of your claim. However, if the modification is for a pre-existing condition unrelated to the accident, it may not be covered.

Key Legal Framework for CTP Modifications

Under the Motor Accident Injuries Act 2017 (MAIA), SIRA administers CTP claims in NSW. Section 4.4 of the MAIA outlines that compensation must be based on injuries caused by the accident. Modifications are treated as part of the claim only if they are a direct consequence of the accident. SIRA's guidelines clarify that modifications must be 'reasonably necessary' to address the injury's impact, not for convenience or pre-existing needs.

Evidence Required to Prove Modifications

To support your claim for vehicle modifications, you must provide:

  • Medical evidence confirming the injury caused by the accident
  • Documentation showing the modification's necessity (e.g., a doctor's report linking the modification to your injury)
  • Proof of modification (e.g., receipts, photos, or a statement from a mobility specialist)
  • Accident details to establish the injury's link to the accident

SIRA may request these documents to verify that the modification is directly tied to the accident, not a pre-existing condition.

How Modifications Affect Compensation Calculations

SIRA calculates compensation based on the injury's impact, not the modification itself. For example, if a spinal injury requires a hand control aid, the compensation will consider how the injury limits mobility, not the cost of the aid. However, if the modification is for a pre-existing condition unrelated to the accident, it will not be included in the claim.

Practical Steps for Claimants

  1. Seek medical attention immediately after the accident to document the injury
  2. Keep records of all medical reports, treatment plans, and communication with healthcare providers
  3. Notify SIRA within the required time limits (usually 3 years from the accident date, per MAIA s 5.3)
  4. Submit modification documentation promptly to avoid delays

Time Limits and Dispute Resolution

You must notify SIRA of your claim within 3 years of the accident (MAIA s 5.3). If SIRA disputes the necessity of your modification, you may need to:

  • Request a review of their assessment
  • Seek independent medical opinion to support your case
  • Consult a legal professional if disputes escalate

When to Seek Legal Advice

If SIRA rejects your claim or disputes the modification's necessity, it's important to seek legal advice. A solicitor can help you:

  • Challenge SIRA's assessment of your injury's impact
  • Navigate the claims process
  • Ensure you receive all entitled benefits

Next Steps

CTP claims involving vehicle modifications depend on proving a direct link between the accident and the modification. If you're unsure about your claim's viability, contact LegalAdvice.com.au for a free assessment. Every claim depends on its own facts, and time limits may apply.

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