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1Scan for outdated or missing drivers - takes under a minute2Clear out junk files and repair common Windows errors3Fix the driver behind crashes, sound loss and screen glitchesFor the U.S. 2024 model year, every new car that has an inline-six engine came from BMW, Mercedes-Benz, Mazda, Toyota, or Jeep: BMW offered the broadest range, Mercedes covered luxury cars and SUVs, Mazda offered the CX-90, Toyota offered the GR Supra 3.0, and Jeep used Hurricane sixes in Wagoneer SUVs. A V6 does not qualify.
This article treats “car” broadly as any new passenger vehicle, sports car, crossover, SUV, or light truck marketed in the United States. It is not a worldwide list, and exact availability can vary by trim, body style, production timing, and dealer inventory.
An inline-six, also called a straight-six or I6, places all six cylinders in one row. Hybrid vehicles still qualify when their internal-combustion engine is an inline-six, even when an electric motor is integrated into the powertrain.
Key takeaways
- Inline-six and straight-six mean the same engine layout: all six cylinders sit in one row, so a V6 does not qualify.
- BMW supplied the broadest U.S. 2024 range, including performance cars, sedans, coupes, convertibles, SUVs, a plug-in hybrid, and the Z4 roadster.
- Mercedes-Benz used electrified turbocharged inline-sixes across the E-Class, CLE, GLE, GLS, and S-Class families, although exact body-style availability varies.
- The Mazda CX-90 was the mainstream three-row crossover entry, with standard-output Turbo and higher-output Turbo S inline-six versions.
- The Toyota GR Supra 3.0, 3.0 Premium, and 45th Anniversary Edition used an inline-six; the Supra 2.0 used an inline-four and is excluded.
- Jeep extended inline-six power into the full-size Wagoneer and Grand Wagoneer three-row SUVs with different Hurricane engine tunes.
What new cars have an inline-six engine in 2024?
For the U.S. 2024 model year, the qualifying new-vehicle families were BMW, Mercedes-Benz, Mazda, Toyota, and Jeep. BMW offered the widest selection, Mercedes-Benz covered luxury cars and SUVs, Mazda offered the CX-90, Toyota offered the GR Supra 3.0, and Jeep used Hurricane inline-sixes in the Wagoneer family.
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This is a United States 2024 model-year list, not a worldwide inventory. The title uses “car” broadly to include passenger cars, sports cars, crossovers, SUVs, and light trucks marketed as new vehicles. Availability can differ by trim, body style, factory timing, and dealer inventory.
What qualifies as an inline-six?
An inline-six, also called a straight-six or I6, has all six cylinders arranged in a single row. A V6 has six cylinders divided between two cylinder banks, so a V6 does not meet the engine-layout requirement even though both engines have six cylinders.
| Engine description | Does it qualify? | Why |
|---|---|---|
| Inline-six, straight-six, or I6 | Yes | All six cylinders are arranged in one row. |
| V6 | No | The six cylinders are divided between two banks in a V configuration. |
| Inline-six with a 48-volt mild-hybrid system | Yes | The internal-combustion engine is still an inline-six. |
| Inline-six combined with an electric motor or plug-in hybrid system | Yes | Electrification does not change the layout of the combustion engine. |
| Inline-four, including the GR Supra 2.0 | No | The engine has four cylinders rather than six. |
The cylinder count alone is not enough to identify an inline-six. Buyers should confirm the exact engine layout in the manufacturer’s technical data, brochure, or owner’s manual rather than relying on a listing that says only “six-cylinder.”
Which automakers sold inline-six vehicles in the U.S. for 2024?
The U.S. 2024 inline-six market was concentrated in five automaker groups. The table below organizes the qualifying families by the kind of vehicle each brand supplied.
| Automaker | Qualifying 2024 families | Main body styles | Powertrain distinction |
|---|---|---|---|
| BMW | 2 Series, M2, 3 Series, M3, 4 Series, M4, 5 Series, 7 Series, 8 Series, X3, X4, X5, X6, X7, Z4 | Coupe, convertible, sedan, Gran Coupe, SUV, roadster | B58-family applications, higher-output S58 M cars, and the X5 xDrive50e plug-in hybrid |
| Mercedes-Benz | E-Class, CLE, GLE, AMG GLE 53, GLS, S-Class | Sedan, wagon, coupe, convertible, SUV, SUV coupe | Turbocharged 3.0-liter inline-six architecture with electrification in the relevant 2024 applications |
| Mazda | CX-90 3.3 Turbo and Turbo S | Three-row crossover | 3.3-liter e-Skyactiv G turbocharged inline-six, with standard-output and higher-output versions |
| Toyota | GR Supra 3.0, 3.0 Premium, and 45th Anniversary Edition | Two-seat sports coupe | 3.0-liter twin-scroll single-turbo inline-six |
| Jeep | Wagoneer and Grand Wagoneer Hurricane-powered variants | Full-size three-row SUV | Twin-turbo Hurricane inline-six applications with different outputs and designations |
Which BMW models have an inline-six in 2024?
BMW had the broadest U.S. 2024 inline-six lineup. The qualifying applications ranged from the M240i and M340i to large SUVs such as the X7 and the two-seat Z4 M40i. BMW’s U.S. model index is useful for identifying the model families, but the exact body style and engine should still be checked for the specific vehicle.
| BMW family | 2024 inline-six applications | Body styles or configuration | Engine and electrification note |
|---|---|---|---|
| 2 Series | M240i | Coupe and listed convertible applications | B58-family turbocharged inline-six application |
| M2 | M2 | Performance coupe | Higher-output S58 inline-six branch; not the same tune as ordinary B58 applications |
| 3 Series | M340i | Sport sedan | B58-family turbocharged inline-six |
| M3 | M3 | Performance sedan applications | Higher-output S58 inline-six branch |
| 4 Series | M440i; M4 | M440i coupe, convertible, and Gran Coupe; M4 coupe and convertible | M440i uses a B58-family application; M4 uses the higher-output S58 branch |
| 5 Series | 540i and 540i xDrive | Sedan | B58-family turbocharged inline-six |
| 7 Series | 740i and 740i xDrive | Luxury sedan | B58-family turbocharged inline-six |
| 8 Series | 840i | Coupe, convertible, and Gran Coupe | B58-family turbocharged inline-six |
| X3 | X3 M40i | Compact SUV | B58-family turbocharged inline-six |
| X4 | X4 M40i | Sport-activity coupe | B58-family turbocharged inline-six |
| X5 | xDrive40i and xDrive50e | Mid-size SUV | xDrive40i uses a turbocharged inline-six; xDrive50e combines a 3.0-liter inline-six with an electric motor |
| X6 | xDrive40i | Sport-activity coupe SUV | B58-family turbocharged inline-six |
| X7 | xDrive40i | Three-row luxury SUV | B58-family turbocharged inline-six |
| Z4 | M40i | Two-seat roadster | B58-family turbocharged inline-six |
BMW’s ordinary B58-family applications and the higher-output S58 applications in the M2, M3, and M4 are all turbocharged 3.0-liter inline-sixes, but they should not be treated as one identical engine tune. The engine family, calibration, supporting hardware, and vehicle application differ.
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According to BMW USA’s 2024 3 Series technical data, the M340i uses a 2,998-cc gasoline six-cylinder engine producing 386 horsepower and 398 lb-ft of torque. Those figures identify the 2024 M340i specification; they are not a universal output rating for every BMW inline-six listed above.
Which Mercedes-Benz models have the inline-six?
Mercedes-Benz used turbocharged 3.0-liter inline-six power in several 2024 U.S. luxury-car and SUV families. Mercedes-Benz’s official 2024 GLE information describes the setup as a “3.0L inline-6 turbocharged engine with 48-volt mild hybrid system.”
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|---|---|---|---|
| E-Class | E 450 | Sedan and wagon applications | Confirm the exact body style and production timing before purchase. |
| CLE | CLE 450 | Coupe and convertible applications | Confirm the exact body style and market configuration. |
| GLE | GLE 450 | SUV and coupe applications | Both body-style families are identified, but trim availability can vary. |
| AMG GLE | AMG GLE 53 | Performance SUV and related variants | Uses a related turbocharged inline-six architecture; verify the specific variant. |
| GLS | GLS 450 | Full-size luxury SUV | Check the vehicle’s exact model-year equipment listing. |
| S-Class | S 500 | Luxury sedan | Check the exact production and market configuration. |
The Mercedes-Benz entries should be read as model-family coverage rather than a claim that every E 450, CLE 450, GLE 450, AMG GLE 53, GLS 450, or S 500 had identical equipment in every body style. Mercedes-Benz availability could change by body style and production timing.
Is the Mazda CX-90 a six-cylinder?
Yes. The 2024 Mazda CX-90 was available with a 3.3-liter e-Skyactiv G turbocharged inline-six, making it the mainstream three-row crossover entry in this list.
| 2024 CX-90 version | Inline-six configuration | Published output | Important qualification |
|---|---|---|---|
| CX-90 3.3 Turbo | 3.3-liter e-Skyactiv G turbocharged inline-six | Lower-output version; the supplied manufacturer material does not provide a figure here | Still qualifies because the engine has six cylinders arranged in one row. |
| CX-90 3.3 Turbo S | 3.3-liter e-Skyactiv G turbocharged inline-six | 340 horsepower and 369 lb-ft of torque | The rating applies when using Mazda’s recommended premium fuel. |
According to Mazda North American Operations’ January 2023 announcement, the available Turbo S engine produced 340 horsepower and 369 lb-ft of torque when using the recommended premium fuel. Mazda described the engine as its most powerful mass-production gasoline engine at launch.
Mazda’s 2024 CX-90 owner’s manual specifies a DOHC-24V in-line six-cylinder engine and lists 3,283.1 ml of displacement. The ordinary Turbo and Turbo S should be kept separate because the 3.3-liter inline-six was offered in more than one output version.
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“The available 3.3-liter inline 6 turbo will have the highest horsepower and torque from a mass production gasoline engine developed by Mazda with 340 horsepower and 369 lb-ft of torque when using the recommended premium fuel.” — Mazda North American Operations, January 17, 2023
Does the 2024 Toyota GR Supra have an inline-six?
Yes, but only the 2024 GR Supra 3.0 grades have an inline-six. The GR Supra 3.0, 3.0 Premium, and 45th Anniversary Edition used the same 3.0-liter turbocharged inline-six; the GR Supra 2.0 used an inline-four and is excluded.
| 2024 GR Supra grade | Engine layout | Published output | Included? |
|---|---|---|---|
| GR Supra 3.0 | 3.0-liter twin-scroll single-turbo DOHC 24-valve inline-six | 382 horsepower and 368 lb-ft of torque | Yes |
| GR Supra 3.0 Premium | 3.0-liter twin-scroll single-turbo DOHC 24-valve inline-six | 382 horsepower and 368 lb-ft of torque | Yes |
| GR Supra 45th Anniversary Edition | Same 3.0-liter turbocharged inline-six used by the 3.0 grades | 382 horsepower and 368 lb-ft of torque | Yes; it is a special edition, not a separate engine family |
| GR Supra 2.0 | Inline-four | Not an inline-six specification | No |
According to the Toyota USA Newsroom announcement for the 2024 GR Supra, the 3.0 grades produced 382 horsepower and 368 lb-ft of torque. Toyota’s 2024 GR Supra brochure identifies the engine as a 3.0L twin-scroll single-turbo DOHC 24-valve inline-six-cylinder engine.
“Drivers can choose from the GR Supra 3.0 or 3.0 Premium grades, powered by an inline six-cylinder turbocharged engine that outputs 382-hp and 368 lb.-ft. of torque.” — Toyota USA Newsroom, August 17, 2023
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The 45th Anniversary Edition does not create a new inline-six engine category. The 45th Anniversary Edition uses the same B58 inline-six as the other 2024 GR Supra 3.0 grades.
Which Jeep SUVs have an inline-six in 2024?
The 2024 Jeep Wagoneer and Grand Wagoneer used Hurricane-powered inline-six variants. These are full-size, three-row SUVs rather than conventional passenger cars, but they qualify under the broad new-vehicle definition used for this U.S. list.
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| Jeep family | 2024 qualifying powertrain | Vehicle type | Published output or designation |
|---|---|---|---|
| Wagoneer | Hurricane twin-turbo inline-six variants | Full-size three-row SUV | According to Jeep’s 2024 product information, up to 420 horsepower and 486 lb-ft of torque |
| Grand Wagoneer | Hurricane Twin-Turbo 510 | Full-size luxury three-row SUV | Separate higher-output Hurricane designation; do not transfer the Wagoneer figures to every Grand Wagoneer version |
Jeep’s 2024 Wagoneer capability information lists up to 420 horsepower and 486 lb-ft of torque for the Wagoneer Hurricane application. The 2024 Grand Wagoneer product information identifies the Hurricane Twin-Turbo 510, which is a different application and should not be presented as the same tune as the regular Wagoneer.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Which 2024 inline-six vehicle fits each use?
The vehicles do not serve the same purpose. The following comparison separates the dedicated sports car, roadster, mainstream crossover, luxury vehicles, and full-size SUV choices without treating their engines as interchangeable.
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| Shopping priority | Relevant 2024 choices | What the category offers | What to verify |
|---|---|---|---|
| Dedicated sports car | Toyota GR Supra 3.0, 3.0 Premium, 45th Anniversary Edition | Two-seat sports coupe with a confirmed 3.0-liter turbocharged inline-six | Choose a 3.0 grade; the Supra 2.0 is an inline-four. |
| Two-seat roadster | BMW Z4 M40i | Open-top roadster with a B58-family inline-six application | Confirm the exact 2024 equipment and drivetrain configuration. |
| Performance coupe or convertible | BMW M240i, M440i, M2, M4; Mercedes-Benz CLE 450 | Several premium body styles with standard-output or high-output inline-six applications | Engine family and output depend on the exact model and trim. |
| Luxury sedan | BMW M340i, 540i, 740i, M3; Mercedes-Benz E 450 and S 500 | Inline-six power in sport-sedan and luxury-sedan families | Check rear-wheel-drive or all-wheel-drive configuration and body-style availability. |
| Mainstream three-row crossover | Mazda CX-90 3.3 Turbo or Turbo S | The least exclusive and most family-oriented inline-six entry in the list | Separate the lower-output Turbo from the Turbo S and note the recommended premium-fuel condition for the published Turbo S rating. |
| Luxury SUV or SUV coupe | BMW X3 M40i, X4 M40i, X5, X6, X7; Mercedes-Benz GLE, AMG GLE 53, GLS; Jeep Wagoneer and Grand Wagoneer | Inline-six power across compact, mid-size, full-size, and three-row SUV categories | Verify towing, seating, drivetrain, off-road equipment, and the exact engine tune. |
How should shoppers verify a 2024 inline-six listing?
Shoppers should verify the engine layout at the exact model-and-trim level rather than assuming that a six-cylinder badge identifies an inline-six.
- Confirm the model year and market. A 2024 model-year vehicle is not necessarily built or sold at the same time as a 2024 calendar-year vehicle, and this list applies to the United States.
- Check the exact trim and body style. Mercedes-Benz availability could vary between sedan, wagon, coupe, convertible, SUV, and SUV-coupe applications. BMW, Mazda, Toyota, and Jeep also used different engine applications within their families.
- Look for the layout wording. The decisive terms are “inline-six,” “in-line six-cylinder,” “straight-six,” or “I6.” A listing that says only “six-cylinder” is incomplete.
- Check whether electrification is present. The BMW X5 xDrive50e combines an inline-six with an electric motor, while Mercedes-Benz described relevant systems with 48-volt mild-hybrid assistance. Both still qualify because the combustion engine itself is an inline-six.
- Use manufacturer documentation. Technical specifications, brochures, and owner’s manuals are stronger evidence than a generic inventory database. Mazda’s 2024 CX-90 manual and Toyota’s 2024 GR Supra brochure are examples of documents that state the engine layout directly.
- Check the vehicle identification and build information before buying. Dealer listings can contain errors, and a model family may offer both an inline-six and a different engine, as the GR Supra 3.0 and Supra 2.0 demonstrate.
The U.S. Department of Energy’s 2024 model-year vehicle database can help cross-check model-year coverage, but a generic six-cylinder field cannot reliably distinguish a straight-six from a V6. Manufacturer technical pages and brochures therefore control the engine-layout determination.
What are the main trade-offs between these inline-six vehicles?
The most important comparison is not simply horsepower. Buyers should compare body style, engine tune, electrification, drivetrain, utility, fuel requirements, maintenance complexity, and price segment for the specific vehicle.
| Decision factor | What changes across the 2024 list | Why the distinction matters |
|---|---|---|
| Engine output | Standard-output B58 and Mazda Turbo versions sit alongside higher-output BMW M, Mazda Turbo S, Mercedes-AMG, Toyota GR Supra, and Hurricane applications. | A shared cylinder layout does not mean identical performance specifications or supporting hardware. |
| Electrification | Some Mercedes-Benz applications used 48-volt mild-hybrid systems, and the BMW X5 xDrive50e paired the inline-six with an electric motor. | Hybrid assistance changes the powertrain system and ownership questions even though the combustion engine remains an inline-six. |
| Body style | The list includes coupes, convertibles, roadsters, sedans, crossovers, SUV coupes, and full-size SUVs. | A Toyota GR Supra and a Jeep Grand Wagoneer cannot be evaluated by the same seating, cargo, towing, or utility criteria. |
| Fuel requirements | Mazda’s published CX-90 Turbo S rating is tied to using the recommended premium fuel. | Fuel grade can affect the stated output and should be included in ownership-cost planning. |
| Maintenance planning | Turbocharging, hybrid components, and different vehicle sizes create different service considerations. | A generic “inline-six” label does not establish identical service intervals, repair costs, or long-term reliability. |
| Price segment | The range runs from mainstream Mazda crossover positioning to premium BMW and Mercedes-Benz vehicles, a sports-car Toyota, and large luxury Jeep SUVs. | Purchase price, insurance, fuel, tires, brakes, and service costs must be evaluated by model rather than engine layout alone. |
The supplied specifications establish engine layout and published output, but they do not establish reliability, driving feel, sound quality, real-world fuel economy, or ownership cost. Those claims require separate testing or ownership research and should not be inferred from the inline-six configuration.
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Is this a worldwide list of 2024 inline-six cars?
No. This is a U.S. 2024 model-year list. Global 2024 offerings can differ substantially, including diesel and market-specific BMW or Mercedes-Benz vehicles that were not evaluated in this dossier.
No authoritative worldwide published count of every 2024 inline-six vehicle was identified. A country-by-country research pass would be necessary to turn this U.S. list into a global one.
Frequently Asked Questions
Does the 2024 Toyota GR Supra have an inline-six?
Yes. The 2024 Toyota GR Supra 3.0, 3.0 Premium, and 45th Anniversary Edition use a 3.0-liter turbocharged inline-six. The Supra 2.0 uses an inline-four, so it is excluded.
Is the 2024 Mazda CX-90 a six-cylinder?
Yes. The 2024 Mazda CX-90 is available with a 3.3-liter e-Skyactiv G turbocharged inline-six in standard-output Turbo and higher-output Turbo S versions. Mazda’s published Turbo S rating is 340 horsepower and 369 lb-ft of torque with recommended premium fuel.
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Does a hybrid BMW with an inline-six count on this list?
Yes. The BMW X5 xDrive50e combines a 3.0-liter inline-six combustion engine with an electric motor. The electric motor does not change the combustion engine’s inline-six layout.
Is this a worldwide list of every 2024 straight-six vehicle?
No. This article covers the United States 2024 model year, not every vehicle sold worldwide. Global inline-six availability can differ by country, including market-specific BMW and Mercedes-Benz models.
The Bottom Line
For the U.S. 2024 model year, the new inline-six choices came from BMW, Mercedes-Benz, Mazda, Toyota, and Jeep. Choose by vehicle purpose and exact trim: the GR Supra 3.0 is the dedicated sports car, the CX-90 is the mainstream three-row crossover, BMW covers the widest range, Mercedes-Benz covers luxury applications, and the Wagoneer family brings the layout to full-size SUVs.
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Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
