When you’re thinking about how to measure fuel efficiency, the term that pops up most often is miles per gallon, or MPG. It’s a straightforward way to understand just how economical a car is. MPG tells you the distance a car can travel on one gallon of fuel, which is roughly 4.5 liters.
This number can vary quite dramatically, from as low as 11 miles per gallon in some less efficient vehicles, to much higher figures in cars designed for economy. Historically, diesel engines have been the champions of fuel sipping, often outperforming their petrol counterparts. However, with the rise in popularity of petrol and hybrid cars among drivers, we’re seeing impressive advancements in petrol and hybrid fuel efficiency too.
It’s important to remember that a car’s real-world MPG can fluctuate based on driving habits. A driver with a heavy foot will likely see different fuel consumption compared to someone who drives more gently.
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For the purpose of this guide, we’re focusing on official average fuel economy ratings. These figures are determined through standardized testing known as the Worldwide Harmonised Light-duty Vehicles Test Procedure (WLTP), ensuring a level playing field when comparing different models.
Here are some of the top cars currently available that boast excellent fuel economy and deliver the Best Miles Per Gallon.
- 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: High MPG Without Compromising Performance – 217.3 mpg
The BMW 330e proves that choosing an economical hybrid car doesn’t mean sacrificing driving pleasure. This model combines a 2.0-liter petrol engine with a powerful electric motor to deliver both strong acceleration and impressive fuel efficiency. It’s a plug-in hybrid that really grabs attention, offering the capability to run on electric power alone for approximately 30 miles, and achieving over 100 mpg on paper under ideal conditions.
The interior of the 330e, consistent with the BMW 3 Series reputation, is premium and packed with advanced technology. For those considering a pre-owned option, there are often attractive deals to be found on used BMW models. This blend of luxury, performance, and exceptional miles per gallon makes the BMW 330e a standout choice for drivers seeking efficiency without compromise.
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2. Toyota Prius: A Hybrid Pioneer Delivering Excellent MPG – 67.0 mpg
Toyota’s Prius is synonymous with hybrid technology and fuel efficiency. Available in both self-charging hybrid and plug-in hybrid versions, the plug-in variant achieves a remarkable official MPG of 235.4. To maximize this best miles per gallon figure, regular battery charging is key.
For those looking at the used car market, the self-charging Toyota Prius presents a more budget-friendly option while still offering impressive fuel economy, nearing 70 mpg according to Toyota. Plug-in Prius models enhance versatility with their ability to operate solely on electric power for shorter commutes, further boosting fuel savings. Inside, the Prius is well-appointed and built to Toyota’s renowned high standards of reliability. Its reputation for being cost-effective and dependable makes it a popular choice, particularly in taxi fleets, highlighting its real-world fuel economy and durability.
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3. Suzuki Swift: Lightweight and Lively Hybrid with Great MPG – 64.0 mpg
The Suzuki Swift stands out as a supermini that combines fun driving dynamics with excellent fuel economy. Every current Suzuki Swift model incorporates Suzuki’s ‘Boosterjet’ hybrid engine. This system is a mild hybrid setup where an electric motor assists the petrol engine, reducing strain and improving overall efficiency.
While the mild hybrid system doesn’t allow for pure electric driving, it significantly enhances fuel economy compared to traditional petrol engines. Drivers benefit from improved MPG and an extra boost of power during acceleration. The Suzuki Swift’s lightweight design further contributes to its agility and fuel efficiency, making it a smart choice for those seeking an economical car that’s also enjoyable to drive and offers best miles per gallon in its class.
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4. Toyota Corolla Touring Sports: Practical Estate with Hybrid MPG – 63.8 mpg
The Toyota Corolla has made a successful return to the market, now offering impressive hybrid technology and fuel economy. The Corolla Touring Sports, the estate version, along with its hatchback sibling, are both praised for their driving experience, featuring well-tuned suspension and responsive handling.
Each Corolla trim level comes generously equipped, and buyers can select from two petrol-hybrid engine options: a 1.8-liter or a 2.0-liter. Both engines deliver excellent fuel economy, achieving up to 63.8 mpg. This combination of practicality, driving enjoyment, and best miles per gallon makes the Toyota Corolla Touring Sports a compelling option for those needing space without sacrificing efficiency.
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5. Hyundai IONIQ: Cost-Effective Hybrid Hatchback with Great MPG – 60.0 mpg
Similar to the Toyota Prius, the Hyundai IONIQ is available as a self-charging hybrid, but the plug-in hybrid version presents even greater value, especially on the used car market. This Hyundai utilizes a 1.6-liter petrol engine paired with an electric motor, providing an electric-only range of up to 39 miles on a full charge.
The Hyundai IONIQ is recognized for its overall cost-effectiveness, extending beyond just fuel savings. Owners can anticipate lower insurance premiums and reduced maintenance costs, contributing to long-term savings. Standard equipment levels are high, and it offers a larger boot capacity than the Prius. While its official MPG is slightly less than the Toyota, it remains impressively economical, making the IONIQ a smart, budget-friendly choice for drivers focused on minimizing running costs and achieving best miles per gallon in a versatile hatchback.
Top Diesel Cars for Fuel Efficiency and Best Miles Per Gallon:
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1. Mercedes-Benz E300 de: Diesel Plug-In Hybrid with Unbelievable MPG – 217.3 mpg
It’s not a typo – the Mercedes-Benz E300 de is indeed a plug-in hybrid diesel, boasting an astonishing official fuel economy figure. To achieve this best miles per gallon rating, maintaining a charged battery is essential.
With a fully charged battery, Mercedes claims an electric-only range of up to 33 miles for the E300 de. This electric range is sufficient for navigating urban environments or completing daily commutes on electric power alone, significantly reducing fuel consumption and maximizing MPG. The Mercedes-Benz E300 de represents the pinnacle of diesel fuel efficiency in a luxury package.
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2. Peugeot 208 1.5 Blue HDi: Stylish Supermini Diesel with Excellent MPG – 71.4 mpg
Introduced in 2019, the Peugeot 208 diesel model is a visually appealing supermini that combines style with fuel efficiency. This five-door Peugeot 208 features distinctive LED lighting and a 1.5-liter diesel engine engineered for economy, officially achieving over 70 mpg.
The interior of this baby Peugeot is equally striking, featuring a modern dashboard design where instruments are viewed over the steering wheel, adding to its unique appeal. The Peugeot 208 1.5 Blue HDi is a fashionable and frugal choice for drivers prioritizing best miles per gallon in a compact car.
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3. Vauxhall Corsa 1.5 Turbo D: Economical Diesel Hatchback with High MPG – 70.6 mpg
The visual similarities between the Vauxhall Corsa and Peugeot 208 are no coincidence; both brands are part of the Stellantis group. Beneath the surface, they share significant components, including the engine and other mechanical elements. This shared engineering explains the remarkably similar fuel economy figures.
The Vauxhall Corsa 1.5 Turbo D mirrors the Peugeot’s engine and internal workings, resulting in nearly identical MPG performance. This makes the Vauxhall Corsa a practical and fuel-efficient hatchback option, offering best miles per gallon in a familiar and reliable package.
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4. Skoda Octavia 2.0 TDI SE: Spacious Family Car with Excellent MPG – 68.9 mpg
The Skoda Octavia is a highly regarded family car, celebrated for its generous interior space, especially the large boot, particularly in the estate version. The 2.0 TDI SE model enhances these practical attributes with outstanding fuel economy.
This Skoda variant is equipped with a 150hp 2.0-liter TDI engine. While not the most powerful, it delivers substantial torque, allowing for relaxed motorway cruising in higher gears without frequent gear changes. The Octavia is known for providing exceptional value, combining impressive fuel economy, class-leading reliability, and an accessible price point. It’s a smart choice for families seeking both space and best miles per gallon in a practical vehicle.
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5. Volkswagen Golf 2.0 TDI: Refined Diesel Hatchback with Great MPG – 68.9 mpg
Similar to the Peugeot-Vauxhall relationship, Skoda and Volkswagen share numerous underlying components. This version of the Mk8 Golf utilizes the same 150hp diesel engine and six-speed manual gearbox found in the Octavia.
While the Golf offers slightly less interior space than the Octavia, it presents a more premium feel, particularly with digital instruments and a large infotainment screen featured in many trims. Used VW models like the Golf are often available at attractive prices. The Volkswagen Golf 2.0 TDI is a refined and economical hatchback that delivers best miles per gallon with a touch of premium quality.
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Driving Habits to Improve Your Car’s Miles Per Gallon
Choosing a fuel-efficient car is a great first step, but optimizing your driving habits can further enhance your car’s miles per gallon. Saving fuel not only reduces your expenses but also contributes to a more environmentally friendly driving approach. While modern engines are generally efficient due to advancements like turbochargers and hybrid technologies, driving style still plays a crucial role in fuel consumption.
Simple Changes for Better Fuel Consumption and MPG
Adopting a few straightforward changes in your driving technique can significantly improve your fuel efficiency and get the best miles per gallon from your vehicle.
1. Minimize Air Conditioning Use
Turning off your air-conditioning is a simple yet effective way to save fuel. Air conditioning systems place a considerable load on the engine, consuming more power than many drivers realize. Reducing or eliminating AC use, especially during milder weather, can noticeably improve your MPG.
2. Drive Smoothly and Steadily
Smooth driving is key to fuel efficiency. Aggressive acceleration and harsh braking consume more fuel. On the motorway, maintaining a constant speed and minimizing speed fluctuations optimizes fuel economy. Similarly, gentle starts and smooth transitions in speed around town reduce strain on the engine and improve your car’s miles per gallon.
3. Combine Short Trips or Walk
Short trips are often less fuel-efficient. Engines operate most efficiently when they are warm. Frequent short journeys prevent the engine from reaching its optimal operating temperature, leading to higher fuel consumption. Whenever feasible, combine errands into a single trip or opt for walking or cycling for very short distances. This not only saves fuel but also reduces wear and tear on your engine and helps achieve best miles per gallon over time.
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