The Most Fuel Efficient Factory Turbocharged Sports Car In 2024 (2024)


  • The BMW Z4 impresses with its fuel efficiency, boasting up to 28 MPG combined with its turbocharged two-liter engine.
  • The more powerful M40i still remains economical, offering 26 MPG combined despite packing a turbocharged inline-six engine.
  • While ownership costs like maintenance and depreciation are factors, BMW offers generous warranties and complimentary maintenance.

Usually, fuel economy is not something that BMW is known for. The German brand always sits near the top in terms of luxury, comfort, speed, and horsepower. However, in their two-pronged quest to create the fastest cars as well as the most luxurious cars, they don’t often get credit for their efficiency.

If you’re looking for an entry-level sports car that you can drive daily, then chances are that fuel economy is pretty important to you. Hence, the BMW Z4 should definitely be on your radar. As far as dedicated sports cars go, it is easily the most efficient vehicle to feature a turbocharger.

We take a dive into the fuel efficiency of the 2024 Z4, uncovering which particular model nets you the best fuel economy. We take a look at the more powerful model as well and determine just how much that extra performance will cost you when you fill up. Finally, we present some ownership costs that might affect your desire to take this sports car home.

In order to give you the most up-to-date and accurate information possible, the data used to compile this article was sourced from BMW, and other authoritative sources, including the EPA, Car And Driver, HotCars, and CarEdge.


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BMW’s 2024 Z4 Gets Up To 28 Miles Per Gallon Combined

While there are some cars that are a little sporty that might manage more efficiency than the Z4, we feel that the BMW roadster best fits the definition of a sports car. Its turbocharged two-liter engine is also incredibly efficient and helps those looking for an entry point into the world of performance cars save money.

Fuel Economy





sDrive 30i

25 MPG

33 MPG

28 MPG

The 2024 BMW Z4 comes with two different powertrains, the more efficient of which comes in the base sDrive30i. In the testing done by the EPA, the Z4 performed exceptionally. Given that this car is a dedicated performance car, it's pretty impressive that it manages to achieve 28 miles per gallon combined.



2.0-Liter Turbocharged Inline-Four


8-Speed Automatic


255 HP


295 LB-FT



0-60 MPH

5.1 Seconds

Top Speed

150 MPH

To achieve this impressive fuel economy, the Z4 makes use of its impressive turbocharged two-liter inline four-cylinder. This powertrain can be found on every base sDrive30i model and is paired with rear-wheel drive and an eight-speed automatic transmission.

The Most Fuel Efficient Factory Turbocharged Sports Car In 2024 (2)

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Paddle shifters mounted on the steering wheel control the Z4s' shifts through one of the most responsive automatic transmissions on the market. Despite only outputting 255 horsepower, the Z4 still manages impressive acceleration, achieving a 5.1 second zero to 60 mile per hour run in Car And Driver’s tests.


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The Z4 Is Slightly More Efficient Than Its Twin, The GR Supra

The Most Fuel Efficient Factory Turbocharged Sports Car In 2024 (4)

As many people love to constantly point out, the BMW Z4 and the Toyota GR Supra were developed side by side, with the two automakers sharing various parts. This means that the Supra houses the same turbocharged two-liter four-cylinder as the Z4. However, it's not quite as efficient.

GR Supra Fuel Economy






25 MPG

31 MPG

27 MPG

It's not a massive difference, we know, but the fact is that the Z4 is more efficient. Despite sharing the same powertrain, the two-liter version of the GR Supra loses two miles per gallon on the highway compared to the BMW. Their ratings in city driving remain the same, though, according to the EPA. Regardless of this, the Supra is one of the most affordable high-performance Japanese sports cars you can buy today.


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The More Powerful 3.0-Liter Engine Is Still Pretty Economical

The Most Fuel Efficient Factory Turbocharged Sports Car In 2024 (6)

The sDrive30i is not the only version of the 2024 Z4 that you can take home. There is a much more powerful M40i. This version swaps out the four-banger for a turbocharged inline-six that pumps out massive amounts of power. What is particularly impressive, is that the impact on fuel economy is relatively minimal.

Fuel Economy






23 MPG

31 MPG

26 MPG

We’ll go into just how much more powerful the six-cylinder is compared to the four-cylinder below, but just know that it’s a lot. That’s why it is so impressive that the Z4 with this powertrain only effectively loses two miles per gallon in every test. While this isn’t completely negligible, it's pretty damn close.



3.0-Liter Turbocharged Inline-Six


8-Speed Automatic or 6-Speed Manual


382 HP


369 LB-FT



0-60 MPH

3.5 Seconds

Top Speed

150 MPH

The turbocharged inline-six is an absolute monster and pairs nicely with the German brand's practically telekinetic automatic transmission. Where the eight-speed used to be the only choice, you can now equip the M40i with a six-speed manual for an additional charge. Take into account that in the Supra, the six-speed manual is much less fuel-efficient than the automatic.

The Z4 M40i may not be as sharp or driver-centric as some other sports cars, but it's incredibly quick. Car and Driver even managed a 3.5-second run from zero to 60 miles per hour. The M treatment also packs on a ton of sporty equipment that helps it carve corners. The Z4 M40i remains one of the most underrated BMW performance cars ever.


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BMW’s Roadster Starts At A Reasonable $54,050

The Most Fuel Efficient Factory Turbocharged Sports Car In 2024 (8)

One of the best parts of the BMW Z4 is that it's not absurdly expensive. It may cost you more than its Toyota counterpart, but the luxury feel of a BMW cannot be replicated. Considering the equipment that you get, the Z4 is actually pretty impressive value for money.



Starting MSRP





While the M40i will definitely attract a number of buyers, we think that the base model is actually the better deal. Without taking into account the Supra, the Z4’s main rival is the Porsche 718. The sDrive30i may not be as powerful or as locked in, but it is a boatload cheaper. HotCars offers a comprehensive guide to the 2024 Z4, detailing all its features.

The Z4 sDrive30i, while undoubtedly a sports car, falls a little more in line with luxury grand tourers than it does purist track-focused cars. Its interior is of a higher quality than just about any other car in this class. If the M40i still sounds more appealing to you, then we’d really suggest checking out the 3.0-liter Supra instead.

Optional Extras

Saving money by going with the base model also allows you to increase the luxury of your Z4 by adding optional extras. For instance, you can upgrade to leather upholstery on your seats for $1,500. You can also tack on the Convenience Package for $800 which adds lumbar support, keyless entry, and ambient lighting.

The Premium Package, which costs $2,800 adds remote engine start, a heads-up display, a heated steering wheel, and parking assist on top of the features offered in the Convenience Package. An essential is also the Dynamic Handling Package. This costs $2,450 dollars and adds improved brakes, Adaptive M Suspension, and an M Sport differential.

The Most Fuel Efficient Factory Turbocharged Sports Car In 2024 (9)

While the Z4 offers pretty impressive value, with sports car performance and a luxe interior, there are some costs associated with owning this roadster that may put you off taking one home.

Cost Of Ownership

One massive cost when owning any vehicle is maintenance. CarEdge reports on how much it costs to maintain a Z4 on average for its first ten years. You can expect to fork out approximately $13,999 in ten years to service and maintain the BMW roadster. This is $1,678 more expensive than the average luxury convertible.

Depreciation is another major factor in car ownership. Knowing that you are going to lose a large portion of your investment can definitely be a red flag when buying a new car. BMWs are particularly bad when it comes to depreciation. According to CarEdge, the BMW Z4 depreciates an average of 44 percent in its first five years. By the time you’re ready to sell it and move on, it most likely will have lost more than half its value.

Warranties And Complimentary Maintenance

If the figures above have completely scared you away, we don’t blame you. However, there is a silver lining. For those looking to buy their Z4 brand-new, BMW offers a massive incentive in the form of a complimentary maintenance plan. This plan covers your Z4 for three years or 36,000 miles, much more than any of the Z4’s competitors. This means you can at least dodge some of the above costs for a while.

Warranties on the Z4 are pretty stock standard. The limited warranty extends for four years or 50,000 miles and the powertrain warranty covers the Z4 for the same amount of time.

The Most Fuel Efficient Factory Turbocharged Sports Car In 2024 (2024)


The Most Fuel Efficient Factory Turbocharged Sports Car In 2024? ›

BMW's 2024 Z4 Gets Up To 28 Miles Per Gallon Combined

At what RPM are turbocharged engines most efficient in? ›

It is well-known that a turbocharged engine has great torque output at lower engine speeds, so don't overdo it and shift early to a higher gear (a nice guideline is 2000 RPM). The higher the engine speed, the higher the fuel consumption – and the time you gain by accelerating in a lower gear is negligible.

What is the most fuel efficient car on earth? ›

Our top 10 most fuel efficient cars of 2024
  • Škoda Octavia (2020 – onwards) – 67.3mpg. ...
  • Volkswagen Golf (2020 – onwards) – 60.9-63.1mpg. ...
  • Hyundai IONIQ (2019) - 62.8mpg. ...
  • Toyota Corolla (2019 – onwards) - 57.6-62.8mpg. ...
  • Renault Clio (2020 – onwards) – 67.2mpg. ...
  • Kia Niro (2020) - 53.3-61.4mpg. ...
  • Peugeot 108 (2014 - 2022) – 58.9mpg.
Mar 28, 2024

Does turbocharged cars use more fuel? ›

Fuel efficiency: Because turbochargers give your car extra power without increasing the size of the engine, they're typically more fuel-efficient than larger engines. Sound: Turbos muffle engine sounds, making cars with turbo engines quieter to drive.

What is the life expectancy of a turbo engine? ›

On average, turbos last up to 150,000 miles. But with good care, they may last up to 200,000 miles or have a life expectancy of 30 years. To get one thing clear, it will take you about two decades until you need to replace your turbocharger, even if you regularly drive your vehicle.

What is the best brand for turbos? ›

BorgWarner Turbo System, BorgWarner Cooling System, Continental, Garrett Advancing Motion and Mitsubishi Turbochargers are some of the prestigious brands of car turbochargers that we work with at Turbo 3.

Which type of turbocharger is more efficient? ›

Twin-Scroll Turbo

This layout provides more efficient delivery of exhaust gas energy to the turbo, and results and helps provide denser, purer air into each cylinder. More energy is sent to the exhaust turbine, meaning more power.

Is a turbo or supercharger better for fuel economy? ›

A turbocharger provides better fuel efficiency and reduces emission, but boosts power at a specific rpm resulting in turbo lag. A supercharger instantaneously boosts the engine's power but results in more fuel consumption.

At what rpm does turbo kick in? ›

When a turbocharger “kicks in” is based on exhaust pressure, so RPM's (Revolutions Per Minute) are a better indicator of when your turbo is activated. You could be driving 60mph at 1800RPM and the turbo might not be working, but at 20mph your turbo would kick in if you are hard accelerating once you pass 2200rpm.

What car gets 70 mpg? ›

Mazda's new "Skyactiv-G 1.3" engine is a case in point. The Japanese automaker says a Demio subcompact (shown) with the new 1.3-liter direct injection mill, a continuously variable transmission and stop-start tech delivers 30 kilometers per liter under Japan's 10-15 mode test cycle. That's roughly equivalent to 70 mpg.

What is the most eco car in 2024? ›

The Toyota Prius Prime was the top scorer in the 2024 GreenerCars rankings, followed by the Lexus RZ 300e, Mini Cooper SE, Nissan Leaf, Toyota bZ4X, and Toyota RAV4 Prime. Rounding out the top 12 on the Greenest List are three EVs and three gasoline hybrid cars from Hyundai, Toyota, and Kia.

What is the disadvantage of a turbo engine? ›

The disadvantages… The engines cost more. There may be a need for Premium fuel. The engine is more complex and may cost more to repair because of more components.

Are twin turbos more fuel-efficient? ›

Many vehicles use a single turbocharger, but vehicles that are more elite and luxurious will use twin turbos for enhanced benefits for fuel economy and performance.

Will a supercharger increase MPG? ›

The design of a supercharger, which pulls its power from the engine, actually hurts efficiency by adding to the engine's load. That typically shows up in lower fuel economy averages. Beyond that, superchargers work best with large, already powerful engines. And that hurts the fuel economy even more.

Are turbo cars high maintenance? ›

Turbochargers are a great way to add power and performance to your car, but they also require a little extra maintenance to keep them running smoothly. Here are some of the most important things you can do to maintain your car's turbocharger: Change the oil regularly.

Can a turbo last 200,000 miles? ›

Under ideal conditions, your turbo can keep you covered for up to 150,000-200,000 miles or even longer. Even though they can last, you must take care of the maintenance part and drive responsibly to keep them running.

What is the best turbo ever made? ›

10 Of The Most Reliable Turbocharged Engines Ever Built
  • Porsche Twin-Turbo 3.7-Liter Flat-Six. ...
  • Saab Turbocharged 2.0-Liter B202 4-cylinder. ...
  • Subaru EJ20 Turbo. ...
  • Volkswagen Turbocharged 2.0-Liter EA888 4-cylinder. ...
  • Ford Twin-Turbocharged 3.5-liter EcoBoost V6. ...
  • Toyota Twin-Turbo 3.0-Liter 2JZ-GTE 6-cylinder. ...
  • Nissan RB26DETT.
Dec 19, 2023

What is the most common turbo failure? ›

Most failures are caused by the three 'turbo killers' of oil starvation, oil contamination and foreign object damage. More than 90% of turbocharger failures are caused oil related either by oil starvation or oil contamination. Blocked or leaking pipes or lack of priming on fitting usually causes oil starvation.

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