Regan Brown
With gas prices constantly fluctuating, consumers are increasingly looking to save at the pump. Fuel economy is one of the most important factors to consider when buying a new car, as it impacts weekly operating costs. The good news is that most modern vehicles are far more efficient than older models, and some stand out for their exceptional fuel efficiency. This paragraph introduces the topic of the most fuel-efficient cars in the world, highlighting the importance of fuel efficiency for consumers and the evolution of modern vehicles in this area.
| Characteristics | Values |
|---|---|
| Fuel Efficiency Measurement | Miles per gallon (MPG) ratings |
| Factors Affecting Fuel Efficiency | Driving habits, amount of time spent in stop-and-go traffic, weather conditions, etc. |
| Most Fuel-Efficient Cars | 1. Toyota Prius 2. Hyundai Elantra Hybrid 3. Kia Niro Hybrid 4. Toyota Camry Hybrid 5. Toyota Corolla Hybrid |
| Fuel-Efficient Non-Hybrid Cars | Honda Civic, Honda Accord, Mitsubishi Mirage, Nissan Versa, Hyundai Elantra |
| Fuel-Efficient SUVs | Toyota Corolla Cross Hybrid |
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What You'll Learn
Fuel efficiency in cold weather
Fuel efficiency is measured in miles per gallon (MPG) ratings. This can vary depending on driving habits and the amount of time spent in stop-and-go traffic versus on mpg-friendly empty stretches of highway. Driving in cold weather and winter conditions can significantly reduce fuel economy. For example, in city driving, a conventional gasoline car's gas mileage is roughly 15% lower at 20°F than at 77°F. This effect is more pronounced for short trips, where fuel economy can drop by as much as 24%.
There are several reasons why cold weather impacts fuel efficiency:
- Engine and transmission friction increase due to cold engine oil and other drive-line fluids.
- It takes longer for an engine to reach its most fuel-efficient temperature, which affects shorter trips more as the vehicle spends more time at less-than-optimal temperatures.
- Auxiliary features like heated seats, window defrosters, and heater fans use additional power.
- Idling to warm up the car before starting a trip gets 0 miles per gallon.
- Colder, denser air increases aerodynamic drag on a vehicle, particularly at highway speeds.
- Tire pressure decreases in colder temperatures, increasing rolling resistance.
- Winter grades of gasoline have slightly less energy per gallon than summer blends.
- Battery performance decreases, making it harder for the alternator to keep the battery charged. This affects the performance of the regenerative braking system on hybrids, plug-in hybrids, and electric vehicles.
- Icy or snow-covered roads decrease tire grip on the road, wasting energy and reducing safe driving speeds, which further impacts fuel economy.
- Using four-wheel drive uses more fuel.
While it may not be possible to completely negate the impact of cold weather on fuel efficiency, there are some steps you can take to mitigate the effects:
- Park your car in a warmer place, such as a garage, to increase the initial temperature of the engine and cabin.
- Combine trips when possible to reduce the amount of driving with a cold engine.
- Minimize idling to warm up the car. Instead, drive off gently after about 30 seconds, as the engine will warm up faster when driven, allowing you to turn on the heat sooner and reduce fuel costs and emissions.
Some of the most fuel-efficient cars on the market include:
- Toyota Prius: 57/56/57 mpg
- Hyundai Elantra Hybrid: 51/58/54 mpg
- Kia Niro Hybrid: 53/54/53 mpg
- Toyota Camry Hybrid: 51/53/52 mpg
- Toyota Corolla Hybrid: 53/46/50 mpg
- Honda Civic: 33/42/36 mpg
- Hyundai Elantra: 32/41/36 mpg
- Nissan Versa: 32/40/35 mpg
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Fuel-efficient SUVs
Fuel efficiency is a key consideration when buying a car, with many consumers looking to save at the pump. The miles per gallon (MPG) rating is the standard measure of a car's fuel efficiency, and most modern car engines are efficient thanks to turbochargers and hybrid technology.
When it comes to SUVs, there are several fuel-efficient options available. Here are some of the top choices:
2025 Hyundai Tucson Hybrid Blue
The 2025 Hyundai Tucson Hybrid Blue is a relatively inexpensive SUV with good looks and plenty of space. It offers more power and better driving dynamics than its pure-ICE counterpart and has been refreshed for 2025 with new interior controls. However, it lags its rivals by upwards of 7 mpg while coming in at a similar price.
2025 Toyota RAV4 Hybrid
The Toyota RAV4 Hybrid is a compact SUV with excellent fuel efficiency. The 2025 model has a 2.5-litre I-4 hybrid powertrain and is rated at 41 mpg in the city by the EPA, making it more efficient than the pure-gasoline RAV4. It also offers better power, acceleration, and refinement. However, it is more expensive than the non-hybrid version and has an occasionally choppy ride.
2025 Lexus NX 350h AWD
The 2025 Lexus NX 350h AWD is a luxury SUV known for its plush and comfortable interior. It has a highly fuel-efficient set of electric motors and a 2.5-litre I-4 engine, making it one of the best gas mileage SUVs available. It also has a generous resale value compared to most other luxury SUVs.
2025 Toyota Crown Signia AWD
The 2025 Toyota Crown Signia AWD is a premium midsize crossover SUV with a unique, long and low-looking aesthetic. It offers fuel efficiency of nearly 40 mpg, thanks to Toyota's mastery of hybrid powertrains. It also comes with the full array of Toyota Safety Sense tech.
2025 Chevrolet Trailblazer
The 2025 Chevrolet Trailblazer is a subcompact SUV with a roomy interior, affordable pricing, and solid fuel economy, making it an alluring choice for those seeking a small and efficient SUV.
2024 Toyota Venza
The 2024 Toyota Venza is a comfortable midsize 5-passenger SUV with great fuel efficiency, thanks to its standard hybrid powertrain. It also stands out for its singular styling, although it may not be the most exciting option in terms of driving enjoyment.
In addition to these options, other fuel-efficient SUVs worth considering include the 2025 Ford Escape, 2025 Nissan Rogue, 2025 Honda CR-V, and the 2024 Kia Niro Hybrid.
It's important to note that fuel efficiency can vary depending on driving habits and conditions, so it's always a good idea to consider a variety of factors when choosing a fuel-efficient SUV.
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Hybrid cars
One of the most well-known hybrids, the Toyota Prius, has undergone a redesign for the 2023 model year, giving it a dramatic swept-back exterior. The self-charging version of the Prius does not require a plug and returns close to 70 MPG, while the plug-in version provides an even better economy of 235.4 MPG. The 2025 Toyota Corolla Hybrid is another excellent choice, offering a dramatic value proposition at under $25,000. It has a combined MPG of 53/46/50, although it offers less space and power than some rivals. The 2025 Honda Civic Hybrid is also a great option, with a combined MPG of 50 and a reasonable starting price of $30,100.
The 2025 Lexus ES 300h is a hybrid large sedan with a spacious and well-appointed interior, and it achieves an impressive 44 MPG combined. For those seeking a smaller hybrid SUV, the Kia Niro is a stylish option with excellent fuel efficiency and spacious seating for taller adults. The Hyundai Elantra Hybrid is another good choice, offering excellent gas mileage and a spacious cabin with two rows of adult-friendly seats.
For those on a budget, the 2024 Mitsubishi Mirage is the most affordable fuel-efficient car on the market, with a starting price of just under $18,000. While it is not a hybrid, it is the least thirsty gas-powered car available, with a combined MPG of 39.
Overall, there are many hybrid cars on the market that offer excellent fuel efficiency, and the best choice will depend on individual preferences and budget.
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Electric vehicles
One of the most efficient EVs is the Hyundai Ioniq 6, which uses 24 kWh of electricity to travel 100 miles. The Audi E-Tron S, by comparison, uses 53 kWh to travel the same distance. The BMW 330e plug-in hybrid can run on pure electric power for around 30 miles and achieves over 100 mpg on paper. Toyota's plug-in hybrid Prius achieves 235.4 mpg, while the self-charging version, which doesn't use a plug, achieves close to 70 mpg.
While EVs are more fuel-efficient, charging them can be expensive, especially with DC fast charging. The time taken to charge an EV is also a consideration, as a more efficient EV will take less time to charge. The efficiency of an EV is also impacted by driving habits and conditions, such as the amount of time spent in stop-and-go traffic.
When choosing an EV, it's important to consider not only the EPA-rated range but also the efficiency of the vehicle. This will ensure that the EV meets your driving needs and habits and that you have access to the necessary charging infrastructure.
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Improving fuel efficiency
Fuel efficiency is a key consideration for many consumers when choosing a new car, and there are several ways to improve it. Firstly, it's important to note that fuel efficiency is measured in miles per gallon (MPG), indicating how far a car can travel on a single gallon of fuel. While diesel engines are typically the most fuel-efficient, hybrid vehicles are becoming increasingly popular and can offer excellent fuel economy.
When it comes to improving fuel efficiency, there are several strategies to consider:
Choose a Fuel-Efficient Vehicle
Select a car with good fuel economy ratings, such as the Toyota Prius, Hyundai Elantra Hybrid, or the Mitsubishi Mirage. These vehicles are designed to maximise fuel efficiency, which can save you money and reduce your environmental impact.
Maintain Correct Tyre Pressure
Ensuring your tyres are properly inflated is crucial. Underinflated tyres can increase fuel consumption by up to 10% due to higher rolling resistance. Check your tyre pressure regularly and maintain the recommended PSI for your vehicle. This will not only improve fuel efficiency but also prolong the life of your tyres.
Reduce Clutter and Wind Resistance
Remove unnecessary items from your car, including heavy or bulky objects in the boot or rear seats. Every extra 50 kg can increase fuel consumption by 2%. Additionally, avoid using roof racks or cargo boxes whenever possible, as they can significantly decrease fuel efficiency at highway speeds due to increased wind resistance.
Drive at Steady Speeds
Maintain a steady speed within the speed limit, and avoid rapid acceleration and hard braking. Using cruise control can help you maintain a constant speed, reducing fuel consumption. According to fueleconomy.gov, aggressive driving behaviours can lower your gas mileage by 10% to 40%.
Regular Vehicle Maintenance
Keep your vehicle well-maintained, including regular checks on air filters, spark plugs, and connections. Dirty or faulty components can negatively impact fuel economy. It's also beneficial to choose the right engine oil and ensure your engine is tuned for optimal performance.
Other Considerations
- Reduce wheel weight – Lightweight rims and low rolling resistance (LRR) tyres can improve fuel efficiency and handling.
- Minimise air conditioning usage – The air conditioning system can increase fuel consumption, so use it sparingly, especially when driving at lower speeds.
- Plan your route – Anticipate traffic conditions, avoid idling, and plan for efficient routes to reduce unnecessary fuel usage.
- Drive smoothly – Anticipate traffic flow and maintain a safe distance to minimise the need for sudden stops or rapid acceleration.
- Choose efficient driving modes – Some vehicles offer eco-driving modes that optimise engine performance and fuel usage.
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Frequently asked questions
The record for the most fuel-efficient vehicle is held by a prototype that consumes 0.01614 litres of petrol for 100 km (14,573 mpg). This record was achieved by Duke Electric Vehicles, a student team from Duke University, in 2018. The vehicle, named Maxwell, was built for the Shell Eco Marathon and runs on pure hydrogen.
If you are looking for fuel-efficient cars that are commercially available, you can refer to Consumer Reports' list of the most fuel-efficient cars, which includes hybrids and plug-in hybrids that carry their Green Choice certification.
Fuel-efficient vehicles, such as hybrids, offer better gas mileage, resulting in significant cost savings over the lifetime of the vehicle. They are also more environmentally friendly, producing lower emissions compared to traditional combustion engines.
Several factors can impact the fuel efficiency of your car. Cold weather, for instance, negatively affects the fuel efficiency of all types of powertrains. Driving habits, friction, and temperature also play a role in fuel economy.
