The B58 3.0-litre inline-six engine signifies a leap forward in BMW’s engineering prowess. Introduced in 2015, the B58 replaced the well-regarded N55 engine, taking its place as the backbone for a range of BMW’s performance-oriented models.
We appreciate its ability to find a harmonious balance between efficiency, power, and the delightful smoothness characteristic of BMW’s inline-six heritage.
Built on the modular design philosophy, the B58 engine is a testament to BMW’s commitment to developing adaptable and scalable powertrains.
Its 500 cc per cylinder displacement is a strategic move for ease of engineering and potential future hybridization. BMW also ensures that drivers experience a notable increase in power and torque, along with improvements in fuel economy and emissions.
With accolades like being named one of Wards 10 Best Engines, the B58 doesn’t just impress on paper—it has proven its mettle in real-world applications.
Powering a versatile lineup of vehicles, from the spirited M240i to the luxurious 745e plug-in hybrid, the B58 underlines our belief in the joyful driving experience that is synonymous with the BMW brand.
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The BMW B58 Engine: An Overview
Introduced in 2015, the BMW B58 is a testament to the engineering prowess we continue to refine. As the successor to the N55, it brings advancements in power, efficiency, and reduces emissions.
Technical Specifications
- Engine: Turbocharged 3.0 liter inline-six-cylinder
- Turbocharger: Twin-scroll for optimal efficiency
- Displacement: 500 cc per cylinder within the modular engine family
Our B58 features cutting-edge attributes, including a higher compression ratio and a twin-scroll turbocharger, which work together to enhance the driving experience.
A step forward is also seen in the crankcase design: a robust closed-deck configuration ensures strength, while the forged steel crankshaft, connecting rods, and pistons fortify the engine’s internal build.
Reliability isn’t left to chance, with the B58 sporting improved timing chain design and thermal properties to endure the demands of high-performance motoring.
As enthusiasts may know, this engine’s welcome appearance in vehicles such as the BMW M240i signifies BMW M’s commitment to dynamic powertrains.
WardAuto recognized the B58’s caliber by honoring it on their 10 Best Engines list, a testament to the engine’s remarkable balance of performance and reliability.
This recognition, merged with our dedication to innovation, is how we perceive success—an ever-evolving refinement process in the pursuit of motoring excellence.
Power and Performance
The BMW B58 3.0-liter inline-six engine stands out for its exceptional balance of power and efficiency. Engineered to deliver driving pleasure, the B58 has been recognized for its remarkable power output and fuel economy improvements.
Optimizing for Torque and Horsepower
Horsepower: 382 hp
Torque: 369 lb-ft — TwinPower Turbo technology enhances the B58’s power delivery, ensuring immediate response at low RPMs while sustaining a high torque output across a broad rev range.
Our integration of a high precision injection system with variable valve lift allows for optimized fuel-air mix, which contributes significantly to the engine’s high performance levels.
Both the BMW M240i and the M340i, among other models in the BMW series, benefit from this vigorous powertrain.
The B58TU represents the latest iteration, pushing the boundaries of performance further with additional tweaks.
The compression ratio has been carefully calibrated in combination with the turbo’s boost pressure to extract maximum energy from every drop of fuel, which is a testament to our commitment to performance without compromise.
Advancements in Fuel Efficiency
| Model | Engine | MPG (Combined) |
| BMW 740i | B58 | Data Not Available |
| BMW 540i | B58 | Data Not Available |
With our engines, fuel efficiency is paramount. The B58’s latest advancements include a redesigned fuel system featuring cutting-edge fuel injectors which atomize fuel more finely, leading to improved combustion and thus, enhanced fuel economy.
The ongoing development of our TwinPower and high precision injection technologies reflect our pursuit of efficiency, providing commendable MPG figures without sacrificing performance.
The result is a powertrain that offers more while using less, exemplifying our vision for a sustainable driving experience that doesn’t compromise on power.
Design Features and Innovations
When examining the BMW B58 3.0-liter inline-six engine, we’re looking at a powerhouse filled with state-of-the-art technology. This engine stands as a testament to BMW’s engineering prowess, receiving acclaim for its performance, efficiency, and innovations.
Turbocharging and Cooling Systems
To maintain optimal performance levels, BMW has integrated a sophisticated cooling system, including a main water-to-air intercooler and additional engine and transmission oil coolers.
The B58’s turbocharger works in tandem with the engine’s Valvetronic and Double VANOS systems.
The Valvetronic system adjusts valve lift to improve both power output and efficiency, while Double VANOS alters camshaft timing, allowing for better performance across the rev range.
We can’t overlook the importance of the particulate filter in reducing emissions, ensuring the B58 not only performs well but also adheres to stringent environmental standards.
Engineering Excellence in Manufacture
As we crafted each component of the B58, our focus was not solely on its performance but also on the build quality and longevity.
This engine’s advanced construction has not only earned it a spot on WardsAuto’s 10 Best Engines list but also makes it a heart that powers a versatile range of vehicles, from the spirited Z4 to the robust X5 and the high-performance X3 M40i.
The engine’s compression ratio of 11.0:1 and slight increase in displacement to 2,998cc contribute to its robust performance without foregoing efficiency.
In manufacturing the B58, we ensure a distinct and compelling exhaust note that enthusiasts have come to expect, providing an auditory experience that matches its mechanical excellence.
BMW’s Commitment to Quality and Power
At BMW, we pride ourselves on a consistent commitment to delivering power and quality through our esteemed engines, particularly the celebrated B58 3.0-litre inline-six. It represents a benchmark of excellence across our vehicle lineup.
Success Stories across Models
Within our diversified fleet, the B58 engine has been a harbinger of success.
From the BMW X5 xDrive40i to the Z4 M40i Roadster, the engine’s versatility shines across models, consistently earning accolades for its seamless blend of power and efficiency.
Witness the B58’s embodiment of innovation in the BMW M340i Sedan, where it demonstrates remarkable reduced turbo lag and enhanced direct fuel injection. Let’s delve deeper:
Highlighted Performances
- M340i Sedan: Dynamic power output matched with refined smoothness.
- X5 and X7 Series: Robust torque provides formidable strength in our luxury SUVs.
- Z4 M40i: Sporting prowess backed by an engine redlining a thrilling driving encounter.
Future Horizons: The S58 and Beyond
The B58’s evolution doesn’t rest at peak performance — it paves the way for its progeny, the S58 engine, heart of the G80 M3 and G82 M4 Competition.
It escalates the high-performance narrative, augmenting output to an awe-inspiring 503 hp. This engine is not only about raw power but also about the finesse of the driving experience; a reflection of our ongoing innovation and future endeavors in the realm of powertrains.
The S58 extends our legacy into the new era, showcasing our commitment to not just maintaining but elevating our standards of power and precision that is revered around the world.
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