Engineering Certificate South Australia
South Australia certifies modified light vehicles through recognised engineering signatories, who assess the work against VSB14 and South Australian requirements and lodge an engineering report with the Department for Infrastructure and Transport. SA generally accepts Victorian VASS certificates.
- Scheme
- Recognised Engineering Signatory (RES) scheme
- Who certifies
- Recognised Engineering Signatory
- Authority
- Department for Infrastructure and Transport
- Validity
- Report lodged with DIT; permanent once accepted
- Plate / record
- Signatory issues an engineering report for the registration record
How SA certification works
South Australia recognises engineering signatories to assess modified light vehicles against VSB14 plus SA-specific requirements. The signatory produces an engineering report that is lodged with the Department for Infrastructure and Transport and attached to the vehicle's registration record.
Check the signatory's scope first
As in every jurisdiction, signatories are recognised for particular categories of work. Confirm the signatory covers your modification type — engine, brakes, suspension, seats — before booking an inspection.
VASS recognition
South Australia generally accepts Victorian VASS certificates, which makes SA one of the easier destinations for an engineered Victorian car. Carry the VASS certificate, the mod plate photograph and the signatory's report.
Sources and verification
This page summarises the Recognised Engineering Signatory (RES) scheme as administered by Department for Infrastructure and Transport. It is a summary, not the instrument itself. Requirements change, and they are applied at the discretion of the authority and the certifier assessing your vehicle.
- Motor Vehicles Act 1959 (SA) and Australian Road Rules regulations
- Vehicle modifications — Department for Infrastructure and Transport (SA)
- Official Department for Infrastructure and Transport information
Before you start work, confirm your specific situation with Department for Infrastructure and Transport or a Recognised Engineering Signatory. Do not rely on this page alone to decide whether a modification is legal.
Keep your Recognised Engineering Signatory certificate where you can actually produce it
ModVault stores every Recognised Engineering Signatory certificate, receipt and build photo against the vehicle, and produces the whole compliance pack the moment you're pulled over.
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Frequently asked questions
Does South Australia accept VASS certificates?
Generally yes. SA is one of the jurisdictions that typically recognises Victorian VASS certification, though you should confirm with DIT for your specific modification.
Who certifies modified vehicles in SA?
A recognised engineering signatory, who assesses the vehicle against VSB14 and SA requirements and lodges a report with the Department for Infrastructure and Transport.
Keep reading
Current as at 2026-08-24. Reviewed every 90 days; next review due 2026-11-22. This guide is general information for Australian vehicle owners, not legal or engineering advice. Requirements change and are applied at the discretion of your state authority. Always confirm with your road authority or a licensed certifier before starting work.