
When it comes to luxury cars, there are a variety of options that offer both comfort and fuel efficiency. While the definition of fuel efficiency may vary depending on region and testing standards, there are several notable vehicles that stand out for their impressive fuel economy. From sleek sedans to spacious SUVs, here's a look at some of the most fuel-efficient luxury cars on the market.
| Characteristics | Values |
|---|---|
| Most Fuel-Efficient Luxury Cars in 2024 | BMW 2 Series, Audi A4, Audi A5, Mercedes-Benz CLA, BMW 5 Series, Acura Integra |
| Most Fuel-Efficient Luxury SUV | BMW X3, Lexus UX, Jaguar I-PACE, Tesla Model X |
| Most Fuel-Efficient Luxury Cars (as per Reddit users) | Lexus ES300H, BMW X5, BMW 7 Series, Audi A7, Audi A8L, Mercedes S-Class |
| Most Fuel-Efficient Executive Cars | Ford Mondeo, Vauxhall Insignia |
| Most Fuel-Efficient Luxury Cars (Previous Generations) | BMW 320d, Alfa Romeo Giulia |
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What You'll Learn

The 2024 Audi A4 is a highly-regarded luxury daily driver
The interior of the A4 impresses with its elegant and functional design. Leather upholstery, heated seats, and metal trim contribute to a sophisticated ambiance. The cabin provides a spacious and comfortable experience, with rear seating offering 35.7 inches of legroom and a standard sunroof enhancing the sense of spaciousness. While storage bins and cubbies are on the smaller side, the trunk provides a generous 12 cubic feet of space, which is about average for its class.
In terms of performance, the 2024 Audi A4 delivers a smooth and responsive driving experience. The turbocharged 2.0-liter four-cylinder engine, paired with a 12-volt hybrid system, produces 261 horsepower. The seven-speed dual-clutch automatic transmission ensures seamless power delivery, and the all-wheel drive comes standard, providing traction and stability.
The A4 also shines in its handling and ride quality. It offers precise steering, well-controlled body motions, and strong roadholding, resulting in a sharp and agile driving experience. The damping system expertly strikes a balance between comfort and sharp reflexes, ensuring a smooth ride without compromising on responsiveness.
When it comes to safety, the Audi A4 is well-equipped. The Premium Plus trim includes a blind-spot monitor with rear cross-traffic alert and a surround-view camera system. The Prestige trim takes safety a notch higher with a head-up display and a semi-automated parking system. Additionally, rear-seat side airbags are available as an option on all models.
Overall, the 2024 Audi A4 is a highly competent luxury daily driver, offering a rare combination of fuel efficiency, performance, comfort, and safety. It excels in its class with its elegant design, technological sophistication, and dynamic driving experience, making it a top choice for those seeking a luxurious and efficient vehicle.
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The 2024 CLA is the most fuel-efficient model in the Mercedes lineup
The CLA's engine is strong and capable of bringing the luxury sedan up to speed quickly, even when passing other cars on the freeway. The front-wheel-drive 250 can accelerate from 0 to 60 mph in 6.3 seconds, while the four-wheel-drive model shaves off some time, achieving the same in 5.6 seconds. The AMG models are even faster, with the 35 and 45 trims reaching 60 mph in 4.8 and 4.0 seconds, respectively.
The CLA also offers different driving modes, including Eco, Comfort, Sport, and Individual, allowing drivers to customize their experience. Its balanced handling gives the driver a good sense of control, although this comes at the expense of a harsher ride that struggles to absorb bumps. The CLA is also not as well-suited for rough terrain or swallowing big bumps, which are felt inside the cabin.
Compared to its rivals, the CLA is more expensive, even at its base price. However, it offers good fuel economy for a luxury small car, and its new 48-volt mild-hybrid system can provide an additional 13 horsepower in Boost mode. The CLA is expected to start at around $46,000, making it the second-most affordable car in the Mercedes lineup.
Overall, the 2024 CLA is a fun and capable luxury car, offering a good balance of performance, handling, and fuel efficiency, making it a strong choice for those seeking a fuel-efficient luxury vehicle.
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The 2025 Acura Integra is a good option for fuel efficiency
The Integra's engine designs and turbocharging technology contribute to its impressive fuel efficiency, especially in the standard model. The use of synthetic oil and regular oil changes also helps to maintain engine health and optimise performance, further enhancing the vehicle's fuel efficiency.
When it comes to fuel economy, the Integra delivers. According to the EPA, the base model with the CVT transmission achieves 30 mpg in the city and 37 mpg on the highway. The manual transmission A-Spec trim offers similar fuel efficiency, with a slight edge in highway mileage. The Integra's fuel economy is comparable to its key rival, the Audi A3, which is rated at 29 mpg city and 38 mpg highway.
The Integra provides a comfortable and spacious cabin, with heated sport seats wrapped in faux-leather upholstery. The rear seats comfortably accommodate two adults, although the absence of rear air vents and seat heaters is notable in a premium vehicle. The steering is direct and responsive, offering a satisfying driving experience.
Overall, the 2025 Acura Integra is a strong choice for those seeking a fuel-efficient luxury vehicle. It offers a balance of performance, efficiency and reliability, along with a well-appointed interior and a smooth driving experience, making it a competitive option in its class.
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The 2019 Lexus UX has the best-in-class fuel efficiency
The 2019 Lexus UX is one of the most fuel-efficient models in its class, offered in gas-only UX 200 and hybrid UX 250h form. The UX 200 comes with front-wheel drive and gets an EPA-estimated 29/37/33 mpg for city/highway/combined driving, outperforming some of its key competitors. The UX 250h is even more efficient, with front-drive versions rated at 43/41/42 mpg and all-wheel-drive models offering slightly less at 41/38/39 mpg.
The Lexus UX 200's fuel efficiency is impressive, with test drives from Chicago to Detroit yielding an average of 35.8 mpg, and a gas pump calculation of 36.4 mpg. This is a notable improvement over the EPA estimate, which is usually a good indicator of real-world gas mileage. The UX 200 has the appearance of a luxury SUV, both externally and internally, but offers a driving experience akin to that of an economy car.
The Lexus brand has a reputation for reliability and fuel efficiency, with the 2014 Lexus ES300H hybrid also being praised for its fuel economy and performance. Lexus vehicles are a popular choice for those seeking a balance between luxury and efficiency, with many models offering powerful performance and high-end features while maintaining good fuel economy ratings.
When considering fuel-efficient luxury vehicles, it is important to weigh various factors such as driving conditions, personal preferences, and budget. While the 2019 Lexus UX stands out for its class-leading fuel efficiency, other luxury car brands like BMW, Audi, and Mercedes-Benz also offer models with competitive fuel economy ratings and distinct features that may appeal to different buyers. Ultimately, the "best" fuel-efficient luxury car will depend on individual needs and priorities.
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The BMW 2 Series is a fun, sporty, and fuel-efficient option
If you're looking for a fun, sporty, and fuel-efficient luxury car, the BMW 2 Series is an excellent option to consider. Introduced in 2013 and unveiled at the 2014 North American Auto Show, the BMW 2 Series has since become a popular choice for those seeking a blend of performance and fuel economy.
The 2 Series offers a range of engines with affordable running costs, and even the powerful M240i model won't break the bank when it comes to fuel. The 2 Series diesel range is particularly noteworthy for its fuel efficiency. The BMW 218d, for example, can return up to 49.6 mpg (miles per gallon) and emits 149g of CO2 per km under the WLTP system. This makes it a more environmentally friendly choice without compromising on performance.
While the BMW 2 Series may not be the most cost-effective option for business users due to its BiK tax bands, it's still a great choice for those seeking a sporty driving experience without sacrificing fuel economy. The M240i, aimed at driving enthusiasts, achieves a fuel economy of 32.5 mpg, which is impressive for a car that produces 335 bhp.
When it comes to servicing and maintenance, BMW offers several plans to suit your needs. You can choose to pay for three years or 36,000 miles worth of services with a one-off payment of around £300, or you can opt for monthly instalments. Additionally, the 2 Series comes with a three-year unlimited mileage warranty, providing peace of mind on the road.
Overall, the BMW 2 Series is a fantastic choice for those seeking a fun, sporty, and fuel-efficient luxury car. With its range of engine options, affordable running costs, and the backing of BMW's reliable servicing and warranty plans, the 2 Series is sure to provide an enjoyable and economical driving experience.
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Frequently asked questions
The most fuel-efficient luxury car will depend on the type of car you are looking for. For example, the 2019 Lexus UX is a luxury SUV with the best-in-class fuel efficiency. If you are looking for a compact luxury-brand crossover, the BMW X3 is one of the most fuel-efficient. For a luxury small car, the BMW 2 Series is a good option, and the 230i coupe model offers maximum fuel efficiency. The 2024 Audi A4 is a highly-regarded luxury daily driver, and the A4 TSFI 40 model is the most fuel-efficient variant.
The 2024 Mercedes CLA 350 with FWD is the most fuel-efficient model in its lineup. The 2025 Acura Integra also has good fuel economy ratings, and the base Integra model is the most efficient. The 2019 Infiniti QX50 is a stylish and sophisticated luxury SUV. The Alfa Romeo Giulia is a credible alternative to rivals from Audi and BMW, and the 2.2-litre diesel engine model is wonderfully economical.
The Ford Mondeo with a 1.5-litre diesel engine is the most economical car in the executive and luxury car classes, according to tests by What Car?. However, this model is no longer on sale as a new car. The BMW 320d is another used car option that is very fuel-efficient.
The Lexus ES300H hybrid is a reliable and fuel-efficient luxury hybrid car. The Tesla Model X is a fuel-efficient luxury electric car.










































