PG vs Petrol - Pros & Cons for Australian Drivers

Choosing the right fuel type can make a big difference to your running costs, vehicle performance, and environmental footprint. In Australia, many drivers still wonder whether switching to LPG is worth it, especially with rising petrol prices and the growing push towards cleaner alternatives.

If you’re on the fence about LPG vs petrol, this guide breaks down everything you need to know in a clear, everyday-driver style — costs, performance, environmental impact, and long-term value.

What is LPG?

Liquefied Petroleum Gas (LPG) is a fuel made from propane and butane. In Australia, it has long been used as a cheaper alternative to petrol, especially for taxis, couriers, and fleet vehicles.

Unlike petrol, LPG must be stored in a pressurised tank and requires a specific conversion system in a vehicle. Although fewer new cars now offer factory-fitted LPG systems, many existing vehicles on Aussie roads still run on it.

LPG vs Petrol: Quick Comparison

When comparing LPG and petrol, there are several key differences to keep in mind. LPG generally offers cheaper fuel prices, making it a cost-effective option for many high-kilometre drivers, while petrol tends to cost more per litre. However, LPG availability is slowly declining across Australia, so it may not be as easy to find in some regions, whereas petrol is widely available everywhere. If you're converting a petrol vehicle to LPG, a conversion system is required, which comes with an upfront cost, while petrol vehicles need no additional modification.

In terms of performance, LPG can cause a slight drop in power and acceleration, whereas petrol engines usually deliver stronger overall performance. When looking at long-term running costs, LPG can offer noticeable savings over time, especially for frequent drivers, while petrol brings higher ongoing fuel expenses. Environmentally, LPG produces lower emissions, making it a cleaner-burning fuel compared to petrol, which generates higher emissions. Finally, LPG systems often need specialist servicing, while petrol vehicles can be serviced easily at almost any workshop, thanks to standardised parts and widespread mechanic expertise.

LPG — Pros

1. Cheaper Fuel Costs

The biggest benefit of LPG is the price difference. LPG has historically been significantly cheaper than petrol in Australia. For drivers doing high kilometres — think rideshare, tradies, and regional travel — the savings can really add up.

Even with recent price fluctuations, LPG still tends to deliver a noticeable cost advantage at the bowser.

2. Lower Emissions

LPG burns cleaner than petrol, producing fewer harmful exhaust gases. This includes:

• Lower carbon monoxide

• Lower greenhouse gases

• Less particulate matter

For drivers wanting a more eco-friendly option without going fully hybrid or electric, LPG can be a smart transition fuel.

3. Longer Engine Life

LPG produces less carbon build-up inside the engine. This can mean:

• Cleaner internals

• Smoother operation

• Longer engine lifespan

Taxi fleets in Australia famously relied on LPG for years because vehicles could rack up huge kilometres with minimal engine wear.

4. Ideal for High-kilometre Drivers

If you drive long distances regularly, LPG becomes more attractive. The more you drive, the quicker you recover your conversion investment.

Commuters, delivery drivers, travelling tradies, and regional residents can benefit most.

LPG — Cons

1. Upfront Conversion Cost

If your vehicle isn’t already LPG-equipped, you’ll need a conversion. In Australia, an LPG conversion generally ranges from:

$2,000 to $4,000+
depending on the engine and installation type.

This upfront cost means LPG is only economical if you plan to keep your vehicle long enough to recover the cost.

2. Reduced Boot Space

Most vehicles place the LPG tank in the boot, which takes up noticeable space. For families, tradies, and anyone needing extra storage, this can be inconvenient — especially on road trips or camping adventures.

3. Slight Power Reduction

LPG typically produces slightly lower power output than petrol. Most everyday drivers won’t feel a major difference, but performance-focused drivers may prefer petrol.

4. Fewer LPG Stations

While LPG used to be common across Australia, availability is gradually reducing as demand drops and electric vehicles enter the market.

Major cities like Sydney, Brisbane, Melbourne, and Perth still have good coverage, but regional areas may notice fewer LPG pumps.

Tip: Check LPG availability via fuel apps such as FuelCheck (NSW) or FuelWatch (WA).

Petrol — Pros

1. Stronger Performance

Petrol engines generally offer better acceleration and towing power. If you enjoy responsive driving or tow a caravan, boat, or trailer, petrol often feels more capable.

2. Widely Available

Every town and highway across Australia has petrol stations. No planning needed, no conversion hassle — just fill up and drive.

3. No Conversion Needed

Buying a petrol car means you’re ready to go immediately. No extra cost, no extra system to maintain.

4. Well-suited to New Vehicle Tech

Most modern vehicles, including turbocharged engines and hybrids, are designed around petrol technology. Parts, servicing, and upgrades are straightforward and widely supported.

Petrol — Cons

1. Higher Running Costs

Fuel prices in Australia fluctuate constantly, and petrol is consistently more expensive than LPG. For high-kilometre drivers, the cost difference can be significant over a year.

2. Higher Emissions

Petrol produces more carbon emissions and pollutants than LPG. As Australia moves towards cleaner motoring, petrol may face more regulation and tax pressure in the long run.

3. Engine Wear

Petrol engines can develop carbon deposits faster than LPG-run engines, which may lead to more frequent cleaning or reduced efficiency over time.

Who Should Choose LPG?

LPG makes sense if:

• You drive 20,000km+ per year

• You plan to keep your vehicle long term

• You want cheaper running costs

• LPG stations are convenient for you

Best suited to:
Taxis, rideshare drivers, delivery drivers, couriers, high-km commuters, fleet vehicles.

Who Should Choose Petrol?

Petrol is better if:

• You prefer convenience & wide refuelling access

• You want best driving performance

• You own a modern or turbocharged vehicle

• You mainly drive short trips or low kilometres

Great for everyday family cars, city driving, road trippers, and towing.

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Is LPG Still Worth It in Australia?

Despite fewer LPG-compatible new cars on the market, LPG still offers great savings for high-mileage drivers. However, everyday suburban drivers may find petrol simpler and more convenient.

Conclusion

Choosing between LPG and petrol ultimately comes down to your driving habits, budget, and access to LPG stations. If you drive long distances and want to save money on fuel, LPG can be a fantastic option. For convenience, performance, and future vehicle compatibility, petrol remains the mainstream choice for most Aussies.ow us for simple, everyday Australian motoring advice.