Variants in lpg systems vapour - this is the most common of LPG systems, where the LPG vapour enters the engine through a gas mixer attached to the engine air intake system, this system is suitable for carburetor engines and some fuel injected engines.

LPG injection systems - this system has been designed to operate on electronic fuel injected engines, where LPG is injected in to the engine the same way as petrol, this system offers easier starting, better performance and improved fuel economy.