When considering vehicle efficiency, Miles Per Gallon (MPG) is the standard metric. It tells you just how far a car can travel on a single gallon of fuel, approximately 4.5 liters. MPG can vary significantly, from a mere 11 miles per gallon at the low end to much higher figures for more economical models.
Historically, diesel cars have been recognized for their superior fuel economy compared to their petrol counterparts. However, with the rise in popularity of petrol and hybrid vehicles in the UK and other English-speaking markets, it’s essential to explore the most fuel-efficient options across different engine types.
It’s important to remember that a car’s actual MPG can fluctuate based on individual driving habits. A more aggressive driving style will generally lead to lower fuel economy than a gentler approach.
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For consistency and comparison, the following list of fuel-efficient cars is ranked according to their official average fuel economy ratings, determined by the Worldwide Harmonised Light-duty Vehicles Test Procedure (WLTP).
Here are some of the top cars on the market known for their exceptional fuel efficiency:
- 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
The BMW 330e demonstrates that achieving excellent fuel economy in hybrid cars doesn’t necessitate sacrificing driving pleasure. This model combines a 2.0-liter petrol engine with an electric motor, delivering both robust acceleration and impressive MPG figures.
According to automotive experts, the 330e plug-in hybrid stands out in the BMW 3 Series range. It offers the capability to run purely on electric power for approximately 30 miles and can achieve well over 100 MPG on paper, depending on driving conditions and charging habits.
Like other models in the BMW 3 Series lineup, the 330e boasts a premium interior equipped with advanced technology. Consider exploring the used market for potentially attractive deals on pre-owned BMW models.
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2. Toyota Prius: A Leader in Fuel Efficiency
Toyota’s Prius is available in both self-charging hybrid and plug-in hybrid variants. The plug-in hybrid version leads the way with an official MPG of 235.4, provided that regular battery charging is maintained.
The self-charging Prius, which does not require plugging in, is generally more affordable in the used car market and still delivers close to 70 MPG, as reported by Toyota. Plug-in Prius models offer the advantage of electric-only driving for shorter commutes, further enhancing fuel savings.
The interior of the Prius is well-appointed, characteristic of Toyota’s commitment to quality and comprehensive features across their range. Renowned for its reliability and low running costs, the Toyota Prius is a popular choice for drivers prioritizing fuel economy.
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3. Suzuki Swift: Mild Hybrid Efficiency in a Compact Package
Every current Suzuki Swift model incorporates Suzuki’s ‘Boosterjet’ hybrid engine technology. This system employs a mild hybrid setup where an electric motor assists the petrol engine, reducing its workload.
While the mild hybrid system in the Swift doesn’t allow for pure electric driving, it significantly improves fuel economy compared to a conventional petrol engine. Drivers benefit from enhanced MPG and added power during acceleration. The Suzuki Swift is a great option for those seeking fuel efficiency in a smaller, city-friendly car.
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4. Toyota Corolla Touring Sports: Economical and Practical
The Toyota Corolla, reintroduced to the UK market, offers improved hybrid technology. The Touring Sports, the estate version, along with the hatchback, provides a comfortable and engaging driving experience with well-tuned suspension and responsive handling.
All Corolla versions come generously equipped and offer a choice between two petrol-hybrid engines: a 1.8-liter or a 2.0-liter. Both engine options deliver excellent fuel economy, achieving up to 63.8 MPG, making the Corolla Touring Sports a practical and efficient choice for families.
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5. Hyundai IONIQ: Cost-Effective Hybrid Choice
Similar to the Toyota Prius, the Hyundai IONIQ is available as a self-charging hybrid, but the plug-in hybrid variant represents better value, particularly in the used car market.
This Hyundai model 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 IONIQ is recognized for its overall cost-effectiveness, extending beyond fuel savings to include potentially lower insurance and maintenance expenses.
The Hyundai IONIQ boasts a comprehensive list of standard features and offers a larger boot capacity than the Prius. While its official MPG rating is slightly less than the Prius, it remains a highly fuel-efficient and practical vehicle.
Top Fuel-Efficient Diesel Cars Available
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1. Mercedes-Benz E300 de: Diesel Hybrid with Exceptional MPG
The Mercedes-Benz E300 de is a plug-in hybrid diesel that achieves an outstanding official MPG figure. To realize this impressive fuel economy, consistent battery charging is necessary.
With a fully charged battery, Mercedes-Benz states that the E300 de can travel up to 33 miles solely on electric power, suitable for urban driving. This diesel hybrid combines the long-distance efficiency of diesel with the short-trip economy of electric power.
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2. Peugeot 208 1.5 Blue HDi: Stylish and Economical Diesel Supermini
Introduced in 2019, the Peugeot 208 diesel hybrid is a visually appealing supermini. It features five doors, distinctive LED lighting, and a 1.5-liter diesel engine capable of exceeding 70 MPG in official testing.
The Peugeot 208’s interior is equally striking, featuring a modern dashboard design with instruments positioned for viewing above the steering wheel. This Peugeot offers a blend of style and impressive fuel efficiency in a compact form.
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3. Vauxhall Corsa 1.5 Turbo D: Diesel Efficiency in a Familiar Package
The Vauxhall Corsa shares its attractive design with the Peugeot 208, as both brands are part of the Stellantis group. Beneath the surface, they have significant similarities.
The Vauxhall Corsa utilizes the same engine and core components as the Peugeot 208, which explains their comparable fuel economy figures. The Corsa provides a familiar and reliable option with excellent diesel MPG.
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4. Skoda Octavia 2.0 TDI SE: Spacious Family Car with Great MPG
Nearly every Skoda Octavia variant is a superb family vehicle, offering substantial interior space, including a notably large boot, especially in the Estate model. This version combines practicality with outstanding fuel economy.
The Skoda Octavia’s 150hp 2.0-liter TDI engine prioritizes torque over outright power. This characteristic allows for relaxed motorway cruising in higher gears, minimizing the need for frequent gear changes and maximizing fuel efficiency. The Octavia is known for offering exceptional value, blending fuel economy, reliability, and affordability.
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5. Volkswagen Golf 2.0 TDI: Premium Hatchback with Diesel Economy
Similar to the Peugeot-Vauxhall relationship, Skoda and Volkswagen share many underlying components. This version of the Mk8 Golf features the same 150hp diesel engine and six-speed manual gearbox found in the Octavia.
While the Golf offers slightly less interior room than the Octavia, it presents a more premium feel, with digital instruments in many models and a large infotainment screen. The Volkswagen Golf remains a popular and refined choice that also delivers strong fuel economy in its diesel variants.
- Explore car finance options to spread the cost
Maximizing Your Car’s Fuel Efficiency
When choosing your next vehicle, prioritizing fuel efficiency is a smart decision. It reduces fuel expenses and contributes to environmental responsibility.
Various engine technologies influence fuel economy, with petrol engines enhanced by hybrid systems and modern diesel engines often leading the way, particularly on longer journeys. However, advancements like turbochargers and hybrid technology have also made standard petrol engines more efficient than ever before.
Simple Driving Habits to Improve Fuel Consumption
Beyond choosing a fuel-efficient car, adopting certain driving habits can further enhance your MPG.
1. Reduce Air Conditioning Use
Switching off your air conditioning system is a straightforward way to conserve fuel. Air conditioning systems place a significant load on the engine, consuming more power than many drivers realize.
2. Drive Smoothly and Steadily
Maintaining a smooth and consistent driving style is crucial for fuel efficiency. On motorways, aim to keep your engine revs and speed as constant as possible to optimize MPG. Similarly, gentle acceleration from a standstill minimizes strain on the engine and reduces fuel consumption.
3. Combine Short Trips
Whenever feasible, consolidate short journeys. Engines operate most efficiently once they reach their optimal operating temperature. Frequent short trips prevent the engine from fully warming up, leading to increased fuel consumption and potentially causing engine wear over time.
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