Which Bmw Has The B58 Engine – Unlock Its Legendary Performance

The B58 engine, a highly regarded inline-six powerplant, is found in a wide array of modern BMW models across various series. Known for its robust design, impressive power delivery, and significant tuning potential, it’s a favorite among enthusiasts and a benchmark for performance and reliability in its class. This article will guide you through exactly which BMWs feature this acclaimed engine.

Are you eyeing a new or used BMW and wondering if it packs the punch of the legendary B58 engine? Perhaps you’re a DIY mechanic looking to understand the heart of these modern performance machines, or an enthusiast curious about its widespread adoption across the lineup. Whatever your reason, you’ve come to the right place. We’ll dive deep into the models that house this marvel of engineering, explore its different iterations, and share insights on why it’s become one of BMW’s most celebrated powerplants. By the end, you’ll have a clear understanding of which BMW has the B58 engine and why it matters.

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Understanding the Legendary B58 Engine: A Brief Overview

The BMW B58 is an inline-six, turbocharged gasoline engine that first debuted in 2015. It’s part of BMW’s modular engine family, sharing common components and design principles with other B-series engines like the B38 (three-cylinder) and B48 (four-cylinder).

This engine quickly gained a reputation for its smooth power delivery, impressive torque, and remarkable reliability. BMW engineered the B58 from the ground up to be a strong, efficient, and tunable powerplant, building on the legacy of previous inline-six engines like the N54 and N55.

Key Design Features of the B58

The B58 boasts several advanced features that contribute to its performance and efficiency. These include:

Closed-Deck Block: Unlike its N55 predecessor, the B58 features a closed-deck aluminum block. This design significantly enhances the block’s rigidity, making it more durable and better able to handle higher boost pressures, which is excellent news for tuners.
Integrated Exhaust Manifold: The exhaust manifold is cast directly into the cylinder head. This helps the engine warm up faster, improves turbocharger response by reducing turbo lag, and reduces emissions.
Twin-Scroll Turbocharger: BMW utilizes a single twin-scroll turbocharger. This design separates the exhaust pulses from pairs of cylinders, leading to more efficient energy recovery and reduced back pressure.
Valvetronic and Double-VANOS: These BMW signature technologies optimize valve lift and timing. They contribute to better fuel economy, lower emissions, and broader torque delivery across the RPM range.
High-Pressure Fuel System: Direct fuel injection with a high-pressure pump ensures precise fuel delivery and efficient combustion.
Air-to-Water Intercooler: Integrated into the intake manifold, this design provides more consistent and cooler intake air temperatures compared to traditional air-to-air systems, directly translating to more consistent power.

These features combine to create an engine that is both powerful and refined, offering a compelling driving experience across a wide range of vehicles.

So, Which BMW Has the B58 Engine? A Comprehensive Model List

The B58 engine has been a cornerstone of BMW’s powertrain lineup since its introduction. It powers everything from compact sports coupes to luxury sedans and versatile SUVs. If you’re wondering which BMW has the B58 engine, here’s a detailed breakdown by series and model year.

BMW 1 Series (F20/F21 & F40 Generations)

While the 1 Series is often associated with smaller engines, the B58 found its way into the top-tier performance variant:

M140i (F20/F21): From 2016-2019, the M140i was the hot hatch king, powered by the B58 engine, offering incredible straight-line performance.
M135i (F40): The current generation (F40) M135i xDrive also uses a B58 variant, though it’s transversely mounted and a slightly different iteration.

BMW 2 Series (F22/F23 & G42 Generations)

The 2 Series, particularly the M Performance models, is a prime candidate for the B58:

M240i (F22 Coupe, F23 Convertible): From 2016-2021, these models featured the B58, providing a fantastic blend of compact size and potent power.
M240i (G42 Coupe): The latest generation 2 Series coupe continues this tradition, with the G42 M240i xDrive also utilizing the B58.

BMW 3 Series (F30/F31/F34/F35 & G20/G21 Generations)

The 3 Series is arguably where the B58 truly shines, offering a balance of luxury and performance:

340i (F30 Sedan, F31 Touring, F34 Gran Turismo): From 2016-2019, the F30 generation’s top non-M model was the 340i, equipped with the B58.
M340i (G20 Sedan, G21 Touring): The current G20/G21 generation M340i is a powerhouse, featuring a more powerful version of the B58 engine (often referred to as B58TU or B58B30O1). This model is a popular choice for those seeking near-M performance without the full M price tag.

BMW 4 Series (F32/F33/F36 & G22/G23/G26 Generations)

The coupe, convertible, and Gran Coupe versions of the 3 Series equivalent also received the B58:

440i (F32 Coupe, F33 Convertible, F36 Gran Coupe): These models, produced from 2016-2020, were the F3X generation’s flagship non-M 4 Series, powered by the B58.
M440i (G22 Coupe, G23 Convertible, G26 Gran Coupe): The current M440i models carry on the B58 legacy with an updated, even more potent version of the engine.

BMW 5 Series (G30/G31 Generations)

For those who prefer a larger, more executive sedan or wagon, the B58 is also available:

540i (G30 Sedan, G31 Touring): Since 2017, the 540i has been equipped with the B58 engine, offering smooth, effortless power for a comfortable yet spirited driving experience.

BMW 6 Series (G32 Gran Turismo)

The unique 6 Series Gran Turismo also utilized this versatile engine:

640i Gran Turismo (G32): From 2017-2023, the 640i GT featured the B58, blending practicality with strong performance.

BMW 7 Series (G11/G12 Generations)

Even in the flagship luxury sedan, the B58 provides a compelling option:

740i (G11 Sedan, G12 Long Wheelbase): Since 2016, the 740i has been powered by the B58, offering a powerful yet refined engine choice for the executive class.

BMW 8 Series (G14/G15/G16 Generations)

The luxurious 8 Series coupe, convertible, and Gran Coupe also feature the B58:

840i (G14 Convertible, G15 Coupe, G16 Gran Coupe): Introduced in 2019, the 840i models all come standard with the B58 engine, providing ample power for these grand touring machines.

BMW Z4 (G29 Generation)

The modern roadster wouldn’t be complete without a robust inline-six:

Z4 M40i (G29): Since 2019, the Z4 M40i has been a fan-favorite, thanks in large part to its B58 engine, offering thrilling open-top performance.

BMW X Series (X3, X4, X5, X6, X7)

The B58 isn’t just for cars; it’s a popular choice for BMW’s performance SUVs as well:

X3 M40i (G01): Since 2018, the X3 M40i has provided impressive performance in an SUV package, powered by the B58.
X4 M40i (G02): The coupe-styled X4 M40i, also from 2018 onwards, shares the same potent B58 engine.
X5 40i (G05): From 2019, the X5 40i uses the B58, offering a strong balance of power and efficiency for a full-size SUV.
X6 40i (G06): The X6 40i, starting in 2020, also features the B58.
X7 40i (G07): The largest BMW SUV, the X7 40i, has been powered by the B58 since 2019, ensuring smooth acceleration for its substantial size.

Toyota Supra (A90/A91 Generation)

Perhaps one of the most exciting applications of the B58 outside of BMW:

Supra 3.0 (A90/A91): The return of the legendary Supra was made possible through a collaboration with BMW, and it proudly features the B58 engine. This partnership has further cemented the B58’s reputation among a broader audience of performance enthusiasts.

As you can see, the B58 is a highly versatile engine found in a vast number of BMW models, making it a truly ubiquitous and celebrated powerplant across the lineup.

Generations of B58: Evolution of Power

While the B58 engine maintains its core identity, it has undergone several revisions since its launch. BMW refers to these updates as “Technical Updates” (TU). Understanding these generations helps you know what to expect from a particular model year when considering which BMW has the B58 engine under its hood.

B58B30M0 (Original B58)

This was the inaugural version of the B58, launched in 2015. It featured a port fuel injection system alongside direct injection for optimal fuel atomization and efficiency at varying loads. Output typically ranged from 320-335 hp and 330-370 lb-ft of torque, depending on the specific application and market. Key Models: Early F2x M140i/M240i, F3x 340i/440i, G11/G12 740i.

B58B30M1 (B58TU1 or B58 Gen 2)

Introduced around 2018-2019, the M1 variant brought significant updates. The most notable change was the switch to a single, high-pressure direct injection system, eliminating the port injection. It also featured a revised cylinder head, updated crankcase, and a new engine management system. Power output generally increased to around 382 hp and 369 lb-ft of torque.

Key Models: G20 M340i, G29 Z4 M40i, A90 Toyota Supra 3.0 (early versions), G01 X3 M40i, G02 X4 M40i.

B58B30O1 (B58TU2 or B58 Gen 3)

The O1 variant, appearing in some 2022+ models, introduced further refinements, often focusing on efficiency and emissions while maintaining or slightly increasing power. This iteration includes advancements in the VANOS system and other internal tweaks. Performance figures are often similar to the M1, sometimes with subtle power bumps depending on the specific vehicle tune. Key Models: Later G20 M340i, G22 M440i, later A90/A91 Toyota Supra 3.0, G42 M240i.

B58B30T0 (B58TU3 or B58 Gen 4 – for specific high-output applications)

This designation typically refers to even higher-output versions, sometimes seen in certain Alpina models or specialized BMW variants. These often feature further internal strengthening and specific tuning to achieve even greater power figures, often exceeding 400 hp.

Each generation represents BMW’s continuous effort to refine and optimize this outstanding engine, ensuring it remains at the forefront of performance and efficiency.

Why the B58 is a Tuner’s Dream and Driver’s Delight

The B58 engine isn’t just known for its widespread use; it’s celebrated for its inherent capabilities. For drivers, it offers a refined yet exhilarating experience. For DIY mechanics and performance enthusiasts, it presents an incredible platform for modification.

Effortless Power and Refinement

From the factory, the B58 delivers power smoothly and linearly, thanks to its inline-six configuration and twin-scroll turbocharger. There’s minimal turbo lag, providing immediate response whenever you press the accelerator. This makes daily driving incredibly enjoyable, with ample torque for highway passing or spirited backroad excursions.

The engine’s balance and inherent smoothness also contribute to a luxurious driving experience, even in performance-oriented models. It’s quiet when cruising but emits a satisfying growl under hard acceleration.

Remarkable Tuning Potential

The closed-deck block and robust internal components of the B58 are a godsend for tuners. This engine can reliably handle significant increases in boost pressure and power output with relatively simple modifications. Common performance upgrades include:

ECU Tunes (Stage 1/2): A simple software reflash can unlock substantial power gains, often pushing the engine well over 400 horsepower. This is typically the first step for most enthusiasts.
Downpipes: Upgrading the downpipe reduces exhaust back pressure, allowing the turbocharger to spool faster and improving overall flow. This often requires an ECU tune to fully utilize the added airflow.
Intake Systems: Aftermarket intake systems can improve airflow and enhance induction sounds, though their power gains are typically modest compared to tunes or downpipes.
Upgraded Turbos: For serious power, larger turbochargers can be installed, pushing the B58 into the 500+ horsepower range. This requires additional supporting modifications like upgraded fuel pumps and intercoolers.

It’s crucial to approach tuning responsibly. Always opt for reputable tuning companies and ensure your vehicle’s maintenance is up to date before adding more power. Regularly check oil levels and use high-quality synthetic oil, especially when running higher boost.

Maintaining Your B58: Essential Tips for Longevity

Even a robust engine like the B58 benefits from diligent maintenance. Following a proper service schedule will ensure your BMW continues to perform optimally for years to come. These tips are valuable whether you’re a seasoned DIYer or just starting out.

Regular Oil Changes

This is perhaps the most critical maintenance item. BMW recommends specific synthetic oil types (e.g., LL-01, LL-14FE+, LL-17FE+). Always use the correct specification and a high-quality oil filter. For spirited drivers or those with tuned engines, consider more frequent oil changes than BMW’s extended intervals – perhaps every 5,000-7,500 miles instead of 10,000 miles. Pro Tip: Keep an eye on your oil level between changes. Modern BMWs rely on electronic sensors, but a quick dipstick check (if equipped) or regular iDrive monitoring is always a good idea.

Coolant System Checks

The B58 uses an integrated air-to-water intercooler, which means a robust cooling system is paramount. Regularly check your coolant level and inspect hoses for any signs of leaks or wear. Use only BMW-approved coolant. If you notice persistent low coolant levels, it’s time to investigate for potential leaks, which can lead to serious engine damage if left unaddressed. A pressure test kit can help identify subtle leaks.

Spark Plugs and Ignition Coils

These are wear items, especially in turbocharged engines. BMW’s recommended interval is typically around 60,000 miles, but tuned engines may benefit from earlier replacement (e.g., 30,000-40,000 miles). Symptoms of failing spark plugs or coils include misfires, rough idling, or reduced power. Replacing them is a straightforward DIY task for many, requiring a spark plug socket and torque wrench.

PCV System Inspection

The Positive Crankcase Ventilation (PCV) system is vital for engine health. Over time, components like the PCV valve or associated hoses can fail, leading to oil consumption or vacuum leaks. While the B58’s PCV is integrated, knowing the symptoms (e.g., excessive oil consumption, strange engine noises) can help you diagnose issues early and prevent further problems.

Fuel System Health

With direct injection, carbon buildup on intake valves can be a concern over very high mileage, though less so than with earlier direct-injection engines like the N54. Using quality fuel and performing occasional fuel system cleaner treatments can help. If you notice performance degradation or rough running, professional walnut blasting of the intake valves might be necessary, though it’s less common on the B58 than its predecessors.

Regular maintenance is the best defense against unexpected issues and helps ensure that whichever BMW has the B58 engine, it continues to deliver peak performance and reliability.

Comparing the B58 to Its Predecessors: N55 vs. B58

To truly appreciate the B58, it’s helpful to understand how it improved upon its immediate predecessor, the N55 engine. Both are turbocharged inline-sixes, but the B58 brought significant advancements.

Block Design: The N55 used an open-deck block, while the B58 upgraded to a more robust closed-deck design. This is a major factor in the B58’s superior strength and tuning potential.
Turbocharger: Both use a single twin-scroll turbo, but the B58’s turbo is often slightly larger and more efficient, contributing to better response and higher peak power.
Cooling System: The B58 features an integrated air-to-water intercooler directly within the intake manifold. The N55 typically used an air-to-air intercooler, which is less efficient at maintaining consistent intake air temperatures under sustained performance.
Exhaust Manifold: The B58’s integrated exhaust manifold into the cylinder head is a key difference, leading to faster warm-up times and improved emissions, a feature the N55 lacked.
Fuel System: While both are direct injection, early B58s had port injection alongside direct injection (before the M1 update), offering benefits for carbon buildup mitigation.

Overall, the B58 represents a substantial evolutionary leap, building on the N55’s strengths while addressing areas for improvement, particularly regarding structural rigidity and thermal management.

The Future of BMW’s Inline-Six: What’s Next After the B58?

As the automotive world shifts towards electrification, many wonder about the long-term future of internal combustion engines like the B58. BMW has already started to integrate hybrid technology with the B58, creating mild-hybrid variants that offer improved efficiency and a slight boost in low-end torque.

The successor to the B58 is expected to be a new generation of inline-six engines designed with even greater electrification in mind. While the pure internal combustion engine’s days might be numbered, the spirit of the inline-six, with its inherent balance and power delivery, will likely live on in hybrid and perhaps even range-extender applications. For now, the B58 continues to be a cornerstone of BMW’s performance lineup, proving that traditional engineering excellence still has a vital role to play.

Frequently Asked Questions About Which BMW Has the B58 Engine

Is the B58 engine reliable?

Yes, the B58 is widely regarded as one of BMW’s most reliable modern engines. Its closed-deck block design, robust internals, and advanced cooling system contribute to its durability. Proper maintenance, as with any engine, is key to its longevity.

What are the common issues with the B58 engine?

Compared to some predecessors, the B58 has relatively few widespread common issues. Some owners report potential for occasional oil filter housing leaks (a common BMW issue), and some early models had a crank hub issue, though this was largely addressed by BMW. Overall, it’s a very solid platform.

Is the B58 engine in the Toyota Supra the same as in BMWs?

Yes, the B58 engine in the A90/A91 Toyota Supra is essentially the same as found in equivalent BMW models like the Z4 M40i. Toyota and BMW collaborated on its integration, and while there might be minor tuning differences, the core engine hardware is identical, sharing all the B58’s strengths and characteristics.

Can I tune a B58 engine safely?

Yes, the B58 is highly tunable. Its robust design allows for significant power gains with ECU software tunes (Stage 1 and 2) without needing internal engine modifications. However, it’s crucial to use reputable tuners, monitor engine health, and maintain the vehicle diligently to ensure safety and reliability when increasing power.

How often should I change the oil in my B58?

BMW’s recommended oil change interval is typically around 10,000 miles or annually, using BMW-approved synthetic oil. However, for optimal engine health, especially if you drive hard or have a tuned engine, many enthusiasts recommend reducing this interval to 5,000-7,500 miles.

Conclusion: The Enduring Legacy of the B58

The B58 engine has truly earned its place as a modern legend in BMW’s illustrious history. From its robust engineering and refined power delivery to its immense tuning potential, it’s a powerplant that excites drivers and impresses mechanics alike. Whether you’re considering a new performance sedan, a versatile SUV, or even the iconic Toyota Supra, knowing which BMW has the B58 engine means you’re looking at a vehicle with a proven, potent, and reliable heart.

For everyday car owners, it offers peace of mind and exhilarating performance. For DIY mechanics, it provides a well-engineered platform that responds beautifully to proper maintenance and thoughtful modifications. Embrace the power and precision of the B58, maintain it well, and you’ll enjoy countless miles of driving pleasure. Stay safe on the roads, and keep those engines purring!

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Robert Lozano

Robert Lozano is the founder of Engine Needs. With a passion for engines and automotive technology, he provides expert reviews, guides, and advice to help drivers make smarter vehicle decisions.