Legal Advice

SIRA's Rules on Vehicle Modifications in NSW CTP Claims

This article explains how SIRA evaluates vehicle modifications in NSW CTP claims, what evidence is needed to support your claim, and how modifications affect compensation. It also outlines time limits, dispute resolution options, and when to seek legal advice.

Current as at 25 August 2026

How SIRA Evaluates Vehicle Modifications in CTP Claims

If you've suffered a disabling injury in a motor vehicle accident in NSW and require vehicle modifications like hand controls or mobility aids, SIRA (State Insurance Regulatory Authority) has specific rules about how these modifications are treated in your CTP claim. This article explains how SIRA assesses vehicle modifications, what evidence you need to support your claim, and how these modifications affect your compensation.

What SIRA Considers a 'Vehicle Modification' for CTP Purposes

Under NSW CTP rules, a vehicle modification refers to any permanent or semi-permanent change to a vehicle that alters its original design or function. This includes:

  • Installation of hand controls or footrests
  • Addition of ramps or lifts
  • Modification of the vehicle's seating or steering system
  • Changes to the vehicle's braking or acceleration systems

SIRA evaluates whether these modifications are necessary due to your injury, not just for convenience. For example, if your injury has caused a permanent loss of mobility, installing hand controls would be considered a modification directly related to your injury.

Evidence Required to Prove Modifications Affect Your Claim

To support your claim for vehicle modifications, you'll need:

  • A medical report from your treating specialist confirming your injury's impact on mobility
  • Documentation of the modification's installation date and cost
  • Evidence that the modification was necessary due to your injury, not a pre-existing condition
  • Any correspondence with your insurer about the modification

SIRA may also request proof that the modification meets safety standards and is compatible with your vehicle's make and model.

How SIRA Assesses Injury Severity with Modifications

SIRA uses the Motor Accident Guidelines to determine injury severity. When assessing your claim, they consider:

  • Whether the modification is a direct result of your injury
  • How the modification affects your ability to work or perform daily activities
  • The cost of the modification relative to your injury's impact

For example, if your injury has caused a permanent loss of hand function, installing hand controls would be considered a necessary modification. SIRA would then assess how this modification affects your ability to work and your overall quality of life.

Implications for Compensation Calculations

Vehicle modifications can influence the type and amount of compensation you receive. SIRA may:

  • Include the cost of the modification in your total claim
  • Adjust weekly benefits if the modification reduces your ability to work
  • Consider the modification when determining your 'whole person impairment' rating

It's important to note that SIRA does not automatically approve all modifications. They must be directly related to your injury and supported by medical evidence.

Time Limits and Dispute Resolution

You have 52 weeks from the date of your accident to claim certain benefits under the Motor Accident Injuries Act 2017. If your claim involves vehicle modifications, you should:

  • Submit your claim to SIRA within this time frame
  • Seek legal advice if your insurer disputes the modification's relevance
  • Request a review if you believe SIRA has misinterpreted your injury's impact

If your claim is denied, you may need to escalate the matter through the NSW Civil and Administrative Tribunal (NCAT) or seek legal representation.

When to Seek Legal Advice

Vehicle modifications can be complex to assess under NSW CTP rules. A solicitor can help you:

  • Navigate SIRA's assessment process
  • Challenge decisions that unfairly limit your compensation
  • Ensure your modification is properly documented and justified

If your injury has caused a permanent disability requiring vehicle modifications, it's essential to act quickly to protect your rights under the CTP scheme.

Next Steps

CTP entitlements depend on the date of your accident, the nature of your injury, and how your condition affects your daily life. To request contact about your circumstances, complete the quick, no obligation enquiry form.

Prepared using automated research and drafting tools and checked through LegalAdvice editorial and source-validation controls. This page is general information, not personalised legal advice.

The information contained in this website is not intended to constitute professional legal advice. You acknowledge that legaladvice.com.au does not provide legal services or legal advice and that you should not rely or act upon any information received from the use of the website.

How LegalAdvice creates and checks content