Information for AFSACS providers

On this page you’ll find information to support AFSACS providers working on vehicles fitted with alternative fuel systems.

AFSACS providers can order compliance plates through our online bookshop (External link)

Plate prices

Plate type Cost
LPG Compliance Plate


CNG/LNG Compliance Plate


*Costs displayed include GST

If you place your order before 6pm, we’ll process it within one business day and send it to you by Priority Registered Mail.

All modifications to a vehicle must have specific approval from VicRoads or be carried out in accordance with guidelines published by VicRoads. This is a requirement of Regulation 293 of the Road Safety (Vehicles) Regulations 2021.

Conversion of an existing motor vehicle to operate on Liquified Petroleum Gas (LPG), Liquefied Natural Gas (LNG) or Compressed Natural Gas (CNG) is a modification.

Guidelines for gas conversions

VicRoads’ Vehicle Standards Information 27 VSI [PDF 509 Kb] sets out the requirements for an LPG, LNG or CNG conversion.

Any LPG, LNG or CNG conversion carried out in accordance with VSI 27 is an approved modification.
VSI 27 also includes the Conversion Report that vehicle owners must present to VicRoads to notify them of a change in fuel type. 

Need help or advice?

Queries about providing vehicle services under the Alternative Fuel Systems Assessment and Certification Scheme should be directed to VicRoads’ Vehicle Safety & Registration Services team. 

They’re available between 8.30am-5.00pm Monday to Friday by emailing [email protected] or calling 1300 309 571.

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