Australia’s Most Fuel-Efficient Petrol Cars in 2025

As the electric vehicle market continues to grow, petrol-powered cars are far from obsolete. For many Australian drivers, especially those living in rural areas or with limited access to EV charging infrastructure, fuel-efficient petrol cars still present the most practical and affordable driving solution. In this detailed 2025 guide, we explore the top-performing petrol vehicles that sip rather than guzzle fuel—helping you save thousands at the bowser over the life of the vehicle.

🔍 Why Petrol Still Matters in 2025

While electric and hybrid cars are gaining traction, there are compelling reasons why Australians continue to buy petrol cars:

• Lower upfront cost: Petrol vehicles generally have lower purchase prices than EVs or hybrids.

• Readily available fuel infrastructure: Petrol stations are everywhere, especially in regional and outback areas.

• No charging downtime: Refueling takes minutes—not hours.

• Easier long-distance travel: No range anxiety for rural or interstate travel.

• Proven technology: Reliable and familiar to mechanics Australia-wide.

That said, not all petrol cars are created equal. Efficiency is key. Let’s explore the top fuel-sippers in 2025 across categories.

🏆 Top Fuel-Efficient Petrol Cars in Australia – 2025 Highlights

Here’s a snapshot of standout petrol cars based on their real-world combined fuel economy figures:

🚗 Best Petrol Hatchbacks for Fuel Economy

1. Suzuki Swift GL Plus – 4.8L/100km

The 2025 Swift is a budget-friendly gem that continues to punch above its weight in efficiency and driving fun. Its light chassis, compact dimensions, and clever 1.2L engine make it ideal for city drivers.

• Pros: Incredibly low fuel use, agile, affordable

• Cons: Limited boot space, basic infotainment

2. Kia Picanto GT-Line – 5.5L/100km

Compact, cute, and efficient, the Picanto GT-Line is a city slicker’s dream. Despite its size, it feels solid and refined, offering one of the best warranties on the market.

• Pros: Sharp looks, nimble drive, 7-year warranty

• Cons: Not ideal for highways, smaller fuel tank

3. Mazda2 G15 Pure – 5.3L/100km

Mazda’s small hatch is a classy package with upscale interiors, solid build quality, and strong resale value. Plus, it's frugal on fuel.

• Pros: Premium interior, great handling, low fuel burn

• Cons: Rear space is tight

🚙 Fuel-Efficient Small and Mid-Size Sedans

4. Toyota Corolla Ascent Sport – 6.0L/100km

Even with rising hybrid sales, the petrol Corolla holds its ground as an affordable, reliable, and efficient daily driver.

• Pros: Resale value, safety features, smooth CVT

• Cons: Some may prefer hybrid version

5. Mazda3 G20 Pure – 6.1L/100km

The Mazda3 continues to impress with sharp handling, stunning interiors, and modest fuel use. For those wanting a bit more style in their sedan, it’s a great pick.

• Pros: Luxurious feel, composed ride

• Cons: Rear visibility can be limited

6. Honda Civic VTi-LX – 6.3L/100km

Honda’s 2025 Civic keeps its sophisticated silhouette, and despite slightly higher consumption, it delivers exceptional comfort and tech.

• Pros: Advanced tech, premium interior

• Cons: Higher price point than rivals

🚐 Small SUVs with Great Fuel Economy

7. Toyota Yaris Cross GX (1.5L Petrol) – 5.8L/100km

Not to be confused with the hybrid variant, the petrol-only Yaris Cross offers SUV practicality with hatchback-like economy.

• Pros: High seating position, light on fuel

• Cons: Modest power

8. Mazda CX-3 G20 Pure – 6.3L/100km

This long-standing small SUV still appeals to Aussie drivers for its looks, economy, and engaging drive.

• Pros: Great design, decent space

• Cons: Starting to show age compared to newer rivals

9. Hyundai Venue 1.6L Petrol – 6.4L/100km

The Venue delivers SUV practicality in a compact footprint. The latest update sharpens its looks and efficiency.

• Pros: Affordable, roomy cabin, city-friendly

• Cons: Basic interior compared to peers

💡 Tips to Maximise Petrol Efficiency

Whether you drive a Swift or a CX-3, here are actionable tips to squeeze more kilometres out of your tank:

• Keep your tyres inflated: Under-inflated tyres reduce fuel economy.

• Lighten the load: Don’t carry unnecessary cargo.

• Use cruise control: Helps maintain steady speeds on highways.

• Avoid idling: Turn off the engine if you’re waiting long.

• Regular servicing: Clean air filters and tuned engines use less fuel.

💬 Petrol vs Hybrid – Worth Switching?

For many Australians, the appeal of hybrid or electric cars is growing. However, if you’re not ready to make the leap, today’s petrol cars are more efficient than ever. If your driving is mostly urban or regional and you're looking to save upfront, petrol still holds strong.

🧾 What to Look For in a Fuel-Efficient Petrol Car

When shortlisting cars for fuel savings, look beyond just the L/100km rating. Consider:

• Transmission type: CVTs or newer automatics are often more efficient.

• Engine size: Smaller engines with turbocharging tend to perform better.

• Weight: Lighter cars = less fuel usage.

• Fuel type: Regular unleaded vs premium – affects running costs.

• Aerodynamics: Sedans often outperform SUVs in this area.

📉 How Much Can You Save?

Let’s break down how much you can potentially save by choosing a fuel-efficient model:

Example:

• 15,000 km per year

• Fuel price: $2.00/litre

• Car A (6.5L/100km): $1,950/year

• Car B (5.0L/100km): $1,500/year

Annual savings: $450
Over 5 years: $2,250 saved — nearly a holiday!

🧭 Final Thoughts – Which One Is Right for You?

Choosing a fuel-efficient petrol car in 2025 doesn’t mean compromising on style, space, or performance. With manufacturers like Toyota, Mazda, and Suzuki continually innovating in the petrol space, you can enjoy both economy and everyday practicality.

✅ Summary: Our Top Picks