Let’s clear this up first: in the US, ‘gas’ means petrol, but in South Africa, when people talk about ‘gas cars’, they’re typically referring to LPG (liquefied petroleum gas), also known as autogas.
It isn’t a new technology – it’s been around for decades – but it’s having a bit of a moment. Why? Because LPG is typically a whole lot cheaper than petrol by about 30–40%. And in a country where rising fuel costs can make or break a monthly budget, that’s no small difference.
So, how does it actually work? It’s quite simple: a certified technician installs a conversion kit in your car, turning it into a dual-fuel system that can run on either petrol or gas. Once fitted, your car can switch between petrol and LPG automatically, so if you run out of gas, it defaults back to petrol while you're still moving.
And there's an even newer development worth watching: a ‘tri-brid’ system that allows hybrids like the Toyota Corolla Cross to run on autogas as well, so you get electric, petrol and gas in one car.
This obviously leads to lower running costs, cleaner emissions, and less strain when petrol prices hikes. But the real draw is the petrol price. LPG currently sits at around R12 per litre in Gauteng and R14 at the coast – almost half the price of petrol. That adds up with every kilometre you clock up.
But the conversion has its trade-offs. There’s the upfront conversion cost, refuelling infrastructure in SA is still limited to a handful of stations in major metropoles, and not every car is fit for conversion. So, what about all-out electric?