Car modification compliance, sorted — for Australian roads

ModVault Australia keeps every modification to your car certified, proven and roadside-ready. Engineering certificates, blue slips, receipts and service history live in one tamper-evident vault you can produce on the spot — roadside, at inspection, at claim time and at sale.

The problem with a glovebox full of paper

Modifying a car in Australia means generating evidence. A VSCCS certificate in New South Wales, a VASS certificate in Victoria, a modification plate in Queensland, receipts for every component, and a service history that proves the work was done properly. That evidence only has value if you can produce it at the moment someone asks for it.

Most owners can't. The certificate is in a drawer, the receipts are in an email account, and the photos are on an old phone. ModVault fixes that by keeping the whole record against the vehicle, in your pocket, with an audit trail that shows nothing was altered after the fact.

What ModVault does

Certificate vault — every engineering certificate, stored against the vehicle and the specific modification it covers.
Certifier sign-off — licensed certifiers sign work off in-app using a handover code, producing a hashed, verifiable record.
Receipts ledger — proof of purchase for every part, which is what insurers ask for after a claim.
Service history — scheduled reminders and a complete maintenance record.
Roadside pack — one tap produces the full compliance bundle for a roadside stop or defect inspection.
Provenance archive — for heritage and classic owners, decades of documentation presented as a proper history.

Certification, state by state

Vehicle modification certification in Australia is administered jurisdiction by jurisdiction. National guidance comes from Vehicle Standards Bulletin 14, but each state and territory adopts and applies it through its own scheme — and recognition across borders is inconsistent. These guides document each one.

NSW — VSCCSLicensed Certifier · Does not expire — each modification is certified once VIC — VASSVASS Signatory · 30 days from issue for light vehicles — lodge promptly QLD — Approved Person SchemeApproved Person · Modification plate records the approval permanently SA — Recognised Engineering SignatoryRecognised Engineering Signatory · Report lodged with DIT; permanent once accepted WA — Direct DoT approvalAutomotive consultant · Vehicle examination recorded permanently TAS — AVCAISApproved Vehicle Certifier · Certification recorded with registration NT — Approved EngineersRecognised engineer · Recorded with registration ACT — Engineering SignatoriesRecognised engineering signatory · Recorded with registration

Common questions we answer

Does My Mod Need Engineering? Australian ChecklistIn Australia, a modification needs certification when it is a 'significant' modification under VSB14 or your state's code — engine…VSB14 ExplainedVehicle Standards Bulletin 14 (VSB14) is the national code of practice for light vehicle modifications in Australia. It is not law…Blue Slip NSW (AUVIS)A NSW blue slip (AUVIS inspection) is required when registration has lapsed three months or more, the vehicle comes from interstat…Got a Defect Notice? What To Do Next (Australia)A defect notice requires you to rectify the listed items and have the vehicle cleared before it can be legally driven as normal. M…Modified Car Insurance AustraliaAustralian insurers require modifications to be disclosed, and can reduce or refuse a claim where undisclosed modifications are fo…Interstate Engineering CertificatesRecognition of engineering certification varies by jurisdiction. Victorian VASS certificates are generally accepted in SA, TAS, NT…Roadside Compliance PackHave your registration details, engineering certificates or modification plate references, the certifier's name and scheme, and re…

Who it's for

Your build's paper trail, roadside-readyModVault stores every modification, engineering certificate, receipt and service record for your modified car in one tamper-eviden…Provenance, preserved — for the cars that outlive usModVault's heritage experience presents your vehicle's records as a provenance archive: restoration receipts, service history, per…4WD and touring builds: payload, plates and proofTouring 4WD builds accumulate GVM upgrades, suspension lifts, bar work and accessories — most of which affect legality, payload an…Run your club without the spreadsheet and the group chatModVault gives Australian car clubs a private, invitation-only space for member registers, events and communications, with rego-ve…Digital sign-off for licensed certifiers and signatoriesCertifiers can review and countersign modifications in ModVault using a 6-digit handover code or a shareable signing link, without…

Every mod. Certified. Proven. Roadside-ready.

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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.