Katerina Swanson
Fuel efficiency is an important consideration when buying a car, as fuel can be one of the most expensive long-term costs of ownership. The fuel efficiency of a vehicle depends on several factors, including the size and type of vehicle, the type of fuel it uses, and driving habits. As a general rule, smaller vehicles tend to be more fuel-efficient, and performance-focused cars tend to consume more fuel. Electric vehicles are becoming increasingly popular, but their higher purchase price and expensive parts can be a barrier for some buyers. Some of the most fuel-efficient cars on the market include the Mazda-2, Suzuki Swift, and Toyota Corolla.
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What You'll Learn
Fuel efficiency in small cars
When shopping for a new car, fuel efficiency is one of the most important factors to consider. Most modern vehicles are more efficient than their predecessors, but some models outperform others. Smaller vehicles tend to have lower fuel consumption than larger, less efficient vehicles.
The 2025 Toyota Corolla is one of the best compact cars available, offering a winning combination of fuel efficiency, comfort, and value. The front-wheel-drive Corolla hybrid is rated at 138 hp and 53 mpg in city driving. The 2025 Honda Civic, a 5-seater vehicle that comes in 6 trim levels, is another top choice in the compact class. The Sport Sedan CVT model is estimated to deliver 31 mpg in the city and 39 mpg on the highway. The 2024 Acura Integra, a compact hatchback, is another fuel-efficient option, although it may lack the power of higher-end trims.
For those seeking a small SUV, the Nissan Kicks is a reasonably fuel-efficient option, offering a combined 33 mpg according to the EPA. The Mitsubishi Mirage, with its small three-cylinder engine, also offers good fuel efficiency, with an EPA combined rating of 37 mpg. The 2024 Hyundai Elantra Hybrid is another affordable and efficient small hybrid car, offering good fuel economy and plenty of standard tech features. The Kia Niro, a small hybrid SUV, also offers great fuel economy ratings and modern technology features, although it falls short in terms of cargo space.
To improve fuel efficiency, it is recommended to maintain a steady speed without aggressive acceleration, use the recommended motor oil, keep tyres properly inflated, and avoid carrying unnecessary weight.
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Fuel efficiency in SUVs
Fuel efficiency is an important factor when shopping for a new car. Modern vehicles are generally more fuel-efficient than their predecessors, but some models perform better than others. SUVs, for example, have become more efficient in recent years due to new construction methods and advanced powertrain technology.
When it comes to fuel efficiency in SUVs, there are several factors that come into play. Firstly, the size of the vehicle matters. Smaller SUVs tend to have lower fuel consumption than their larger counterparts. Performance-focused SUVs will also consume more fuel than regular ones. However, many performance-focused SUVs have adopted very small turbocharged engines to keep fuel consumption and carbon emissions low.
Another factor that affects fuel efficiency is the type of fuel used. Hybrid SUVs, for example, offer improved fuel economy without compromising on power and acceleration. The 2025 Toyota RAV4 Hybrid AWD is a popular choice in this category, known for its impressive fuel efficiency, refinement, and responsive acceleration. The RAV4 Hybrid is Toyota's second most fuel-efficient SUV, with an EPA city mpg rating of 41. While it is more expensive than the pure-gasoline RAV4, the hybrid model offers a more efficient, refined, and dynamic driving experience.
The 2025 Hyundai Tucson Hybrid Blue is another fuel-efficient SUV worth considering. It offers improved power and driving dynamics compared to its pure-ICE counterpart, along with refreshed interior controls for enhanced usability. However, it lags behind its rivals in terms of fuel efficiency by upwards of 7 mpg. The 2025 Lexus NX 350h AWD is also a strong contender, known for its plush and comfortable interior, making it one of the best gas mileage SUVs available.
Some non-hybrid SUVs with good fuel efficiency include the Nissan Rogue, a spacious and comfortable compact SUV with impressive fuel economy ratings. The Chevrolet Trailblazer is another efficient SUV with a versatile cabin and decent cargo space. The Hyundai Kona, a subcompact SUV, has been redesigned for the 2024 model year and continues to be a solid choice for fuel efficiency. The Hyundai Venue is also worth considering for its affordability, decent cargo space, solid passenger space, and upright seating position.
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Fuel efficiency in hybrid cars
Hybrid cars are becoming an increasingly popular choice for drivers, with many models now available that offer excellent fuel efficiency. When it comes to choosing a car with good fuel efficiency, there are several factors to consider. Firstly, smaller vehicles tend to have lower fuel consumption than larger cars. Performance-focused cars will also typically consume more fuel than regular cars. However, modern technology has allowed many performance cars to keep fuel consumption and carbon emissions relatively low.
The way a car is driven can also impact fuel efficiency. Driving at a steady speed without aggressive acceleration, keeping tyres properly inflated, and avoiding carrying unnecessary weight can all help to improve fuel consumption. Additionally, the condition of the vehicle, such as the age of the engine and the condition of the tyres, can also play a role.
There are several hybrid cars on the market that offer outstanding fuel efficiency. The 2025 Toyota Crown is a full hybrid with excellent fuel efficiency, capable of running on battery power alone or using the engine to charge the battery. The Lexus ES 300h is another fuel-efficient hybrid, offering a spacious and well-appointed interior, as well as a combined 44 mpg. The 2025 Honda Civic Hybrid is also worth considering, as it combines excellent fuel efficiency with a sporty and comfortable interior.
Other notable mentions include the Kia Niro, a small hybrid SUV with great fuel efficiency, a spacious and stylish cabin, and roomy seating. The Hyundai Elantra Hybrid is an affordable and efficient option, offering good fuel economy and plenty of standard features. The Toyota Corolla Hybrid is also an excellent choice, with a combined 50 mpg rating and a range of user-friendly tech features. The Kia Sorento Plug-in Hybrid is another great option, offering impressive fuel efficiency, plenty of passenger space, and a range of standard features.
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Factors that affect fuel consumption
Fuel efficiency is an important consideration for car buyers, and there are several factors that impact a vehicle's fuel consumption. Here are some key factors that affect fuel consumption:
Vehicle Size and Type
The size and type of the vehicle play a significant role in fuel consumption. Generally, smaller vehicles tend to be more fuel-efficient than larger ones. For example, a compact car like the Suzuki Swift is designed to be fuel-efficient, whereas a large SUV will typically consume more fuel.
Type of Fuel
The type of fuel a car uses can impact its fuel efficiency. Petrol-powered vehicles, for instance, are rated based on their fuel consumption in litres per 100 kilometres (L/100km), with lower numbers indicating better efficiency. Diesel and hybrid vehicles also have their own unique fuel efficiency considerations.
Driving Habits
The way a car is driven significantly affects its fuel consumption. Aggressive driving habits, such as speeding, rapid acceleration, and hard braking, can increase fuel consumption. In contrast, maintaining a steady speed and accelerating smoothly can improve fuel efficiency. Additionally, avoiding short trips can help, as engines are more fuel-efficient when they have warmed up.
Vehicle Condition and Maintenance
The condition of a vehicle, including the engine and tyres, can impact fuel consumption. Regular servicing and maintenance are crucial for optimal fuel efficiency. This includes keeping tyres properly inflated, using the recommended motor oil, and ensuring the engine is tuned and free from sludge and corrosion.
Load and Cargo
The weight of passengers and cargo can influence fuel consumption. Each additional 50kg of load can increase fuel consumption by about 2%. Similarly, carrying drag-causing items like cargo pods or bikes can reduce efficiency, so it's best to remove them when not in use.
External Factors
External factors, such as weather conditions and driving terrain, can also impact fuel consumption. For example, driving with the windows down at high speeds can increase wind resistance, leading to higher fuel consumption. Similarly, driving in extreme weather conditions or on varied terrain may require adjustments that impact fuel efficiency.
While there are many factors that affect fuel consumption, understanding and addressing these factors can help improve a vehicle's fuel efficiency and reduce overall fuel costs.
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Tips to improve fuel efficiency
When it comes to fuel efficiency, there are several factors to consider. Firstly, the type of car you choose is important. Smaller vehicles generally have lower fuel consumption than larger ones, and performance-focused cars tend to consume more fuel. However, modern vehicles are becoming increasingly efficient, with some models outperforming others. For example, the 2024 Toyota Prius is known for its good fuel economy, and the Hyundai Elantra is a stylish choice that also offers excellent fuel efficiency. The Kia Niro is another efficient and affordable option, although it may fall short in terms of cargo space.
- Maintain proper tyre inflation: Underinflated tyres have higher rolling resistance, increasing fuel consumption. Keeping your tyres properly inflated can reduce rolling resistance and improve fuel efficiency.
- Reduce weight and drag: Avoid carrying unnecessary weight in your vehicle, as extra weight can decrease fuel efficiency, especially during acceleration and uphill driving. Remove any drag-causing cargo pods or bikes attached to your car when not in use.
- Drive at a steady speed: Aggressive acceleration and frequent stops can increase fuel consumption. Maintaining a constant speed and avoiding hard accelerations can help improve fuel efficiency.
- Use cruise control: If you're driving an automatic car, utilise the cruise control feature to maintain a constant speed and reduce revolutions per minute (RPM), leading to lower fuel consumption.
- Plan your route: Avoid stop-and-go traffic by planning your commute carefully. Traffic congestion can cause frequent stops and starts, increasing fuel consumption. Choose routes with smoother traffic flow whenever possible.
- Use the recommended motor oil: Using the motor oil recommended by your car's manufacturer can help optimise fuel efficiency. Different oils have varying effects on fuel economy, so choosing the right one can make a difference.
- Minimise air conditioning usage: Air conditioning can increase fuel consumption. Whenever possible, avoid using the air conditioning system, especially when driving at lower speeds. However, when driving at higher speeds, it is more fuel-efficient to use the air conditioning instead of opening the windows due to reduced aerodynamic drag.
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Frequently asked questions
There are many factors that can affect a vehicle's fuel consumption, including the type of fuel used, the condition of the vehicle, driving habits, and the weight of cargo. As a result, there is no single car with the best fuel consumption. However, some of the most fuel-efficient cars include the Suzuki Swift, the Mazda-2, the Skoda Octavia, the Peugeot 208 diesel hybrid, and the Toyota Corolla.
There are several ways to improve your car's fuel consumption, including driving at a steady speed, using recommended motor oil, keeping tyres properly inflated, and avoiding carrying unnecessary weight.
Smaller vehicles tend to have lower fuel consumption than larger vehicles. Additionally, electric vehicles and hybrids tend to have better fuel efficiency than petrol-powered cars, but they often come with a higher price tag.
