When you’re thinking about saving money on the road, fuel efficiency, often measured in miles per gallon (MPG), becomes a crucial factor. MPG tells you just how far your car can travel on a single gallon of fuel – about 4.5 liters. This can vary widely, from a mere 11 miles to much more impressive figures that we’ll explore.
Historically, diesel cars have been the champions of fuel economy, outperforming their petrol counterparts. However, with the rise in popularity of petrol and hybrid vehicles, especially in markets like the UK, it’s important to look at the best options across different fuel types.
It’s worth noting that a car’s actual fuel economy can fluctuate based on driving habits. A more aggressive driving style will naturally consume more fuel than a gentler approach. For consistency, the fuel economy figures we’ll discuss are the official averages, determined by the Worldwide Harmonised Light-duty Vehicles Test Procedure (WLTP).
Here are some of the top cars known for their excellent mileage:
- BMW 330e
- Toyota Prius
- Suzuki Swift
- Toyota Corolla Touring Sports
- Hyundai IONIQ
- Mercedes-Benz E300 de
- Peugeot 208
- Vauxhall Corsa
- Skoda Octavia
- Volkswagen Golf
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1. BMW 330e – Up to 217.3 MPG
If you believe that economical cars can’t be exciting, the BMW 330e is here to change your mind. This plug-in hybrid combines a 2.0-liter petrol engine with an electric motor to deliver both strong performance and exceptional fuel economy.
Our expert, Sam, a seasoned motoring editor, highlights, “The 330e plug-in hybrid stands out in the BMW 3 Series lineup because it offers the ability to drive on electric power for around 30 miles and achieve over 100 MPG in ideal conditions.”
Like all BMW 3 Series models, the 330e boasts a premium interior packed with advanced technology. For those considering a used car, there are attractive deals available on used BMW models, making this efficient luxury car even more accessible.
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2. Toyota Prius – Around 67.0 MPG (Self-Charging Hybrid)
Toyota’s Prius is synonymous with fuel efficiency, and for good reason. Available in both self-charging and plug-in hybrid versions, the Prius caters to different needs and driving styles. The plug-in variant boasts an incredible official MPG of 235.4, but this requires consistent battery charging.
The self-charging Prius, a more budget-friendly option on the used car market, still offers impressive fuel economy, nearing 70 MPG according to Toyota. These models don’t need to be plugged in, making them incredibly convenient.
Inside, the Prius is well-equipped, reflecting Toyota’s reputation for high build quality and reliability.
Sam notes, “The Toyota Prius is a common choice for taxi services, and for good reason. It’s exceptionally reliable and economical to run, making it a smart choice for high-mileage drivers.”
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3. Suzuki Swift – Up to 64.0 MPG
Every current Suzuki Swift model incorporates Suzuki’s ‘Boosterjet’ hybrid engine technology. This mild hybrid system uses an electric motor to support the petrol engine, reducing strain and improving fuel efficiency.
While the Swift can’t run solely on electric power due to its mild hybrid setup, it still delivers better fuel economy than traditional petrol engines, along with enhanced acceleration.
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4. Toyota Corolla Touring Sports – Up to 63.8 MPG
The Toyota Corolla has made a strong comeback, particularly with its hybrid versions. The Touring Sports estate model, along with the hatchback, offers a comfortable and engaging driving experience, thanks to its well-tuned suspension and handling.
All Corolla versions come with a generous level of equipment and a choice of 1.8-liter or 2.0-liter petrol-hybrid engines, both providing excellent fuel economy up to 63.8 MPG.
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5. Hyundai IONIQ – Around 60.0 MPG (Self-Charging Hybrid)
Similar to the Toyota Prius, the Hyundai IONIQ is available as both a self-charging hybrid and a plug-in hybrid. The plug-in hybrid IONIQ is often seen as a particularly good value option in the used car market.
This Hyundai utilizes a 1.6-liter petrol engine paired with an electric motor, offering an electric-only range of up to 39 miles on a full charge.
Sam praises the IONIQ for its overall cost-effectiveness: “Beyond just fuel savings, the IONIQ typically benefits from cheaper insurance and maintenance costs, making it an economical choice in the long run.”
The IONIQ comes well-equipped as standard and offers a larger boot space than the Prius. While its official MPG is slightly less than the Prius, it remains a highly fuel-efficient and practical vehicle.
Top Fuel-Efficient Diesel Cars for Maximum Mileage
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1. Mercedes-Benz E300 de – Up to 217.3 MPG
It’s not a typo – the Mercedes-Benz E300 de is indeed a plug-in hybrid diesel, achieving an astonishing official mileage figure. To reach this peak efficiency, regular battery charging is essential.
Mercedes-Benz claims that with a full battery, the E300 de can travel up to 33 miles on electric power alone, which is sufficient for daily commutes in urban areas.
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2. Peugeot 208 1.5 Blue HDi – Up to 71.4 MPG
Introduced in 2019, the Peugeot 208 diesel is a stylish supermini that doesn’t compromise on fuel economy. Featuring five doors, distinctive LED lighting, and a 1.5-liter diesel engine, it officially achieves over 70 MPG.
The Peugeot 208’s interior is equally appealing, with a modern dashboard design that positions the instrument cluster above the steering wheel for a unique driving experience.
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3. Vauxhall Corsa 1.5 Turbo D – Up to 70.6 MPG
The visual similarities between the Vauxhall Corsa and Peugeot 208 are no coincidence. Both brands are part of the Stellantis group, sharing platforms and technologies.
Beneath the surface, the Vauxhall Corsa shares its engine and other key components with the Peugeot 208, which explains their very similar fuel economy figures.
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4. Skoda Octavia 2.0 TDI SE – Up to 68.9 MPG
The Skoda Octavia is a fantastic family car, renowned for its spacious interior, especially the estate version with its large boot. The 2.0 TDI SE model adds exceptional fuel economy to its list of attributes.
Equipped with a 150hp 2.0-liter TDI engine, the Skoda Octavia provides ample torque, allowing for relaxed motorway cruising in higher gears without frequent gear changes.
Sam emphasizes the Octavia’s value: “It offers incredible fuel economy and renowned reliability, all at a price point that’s accessible to most buyers.”
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5. Volkswagen Golf 2.0 TDI – Up to 68.9 MPG
Similar to the Peugeot-Vauxhall relationship, Skoda and Volkswagen also share many components. This version of the Mk8 Golf uses the same 150hp diesel engine and six-speed manual gearbox found in the Octavia.
While the Golf isn’t as spacious as the Octavia, it offers a more premium feel, with digital instruments and a large infotainment screen in many trims. Used VW models like the Golf are often available at very competitive prices.
- Explore car finance options to make your fuel-efficient car purchase easier.
Maximizing Your Car Mileage: Driving Tips
Choosing a fuel-efficient car is a great start, but optimizing your driving habits can further enhance your fuel savings. Modern cars, especially those with turbochargers and hybrid technology, are already designed for efficiency.
Simple Changes for Better Fuel Consumption
1. Reduce Air Conditioning Use
Switching off your air conditioning can significantly reduce fuel consumption. The engine works harder to power the A/C system, consuming more fuel than you might realize.
2. Drive Smoothly
Gentle acceleration and consistent speed are key to fuel efficiency. On highways, maintaining a steady speed and minimizing sudden changes in revs will optimize your MPG. Smooth starts and stops in city driving also reduce engine strain and fuel waste.
3. Combine Trips and Reduce Short Journeys
Short trips are often less fuel-efficient. Engines operate most efficiently when warmed up. For very short drives, the engine may not reach its optimal temperature, leading to higher fuel consumption. Combining errands into a single trip can help improve your overall mileage.
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Learn More About Efficient Driving
By choosing a car with excellent mileage and adopting fuel-efficient driving habits, you can significantly reduce your fuel costs and contribute to a more sustainable environment. Consider these factors when selecting your next vehicle to maximize your savings and minimize your environmental impact.
