2020 BMW 840i Engine B58: Performance, Efficiency, and Engineering Excellence
The 2020 BMW 840i, powered by the refined B58 inline-six engine, stands as a benchmark in the luxury driving segment—where precision engineering meets exhilarating performance.
The B58 Engine: Power and Efficiency in Harmony
The B58 engine in the 2020 BMW 840i delivers a balanced blend of power and efficiency, producing 523 horsepower and 331 lb-ft of torque. With a 3.0-liter displacement and advanced variable valve timing, it ensures responsive acceleration and smooth high-speed cruising, all while meeting modern emissions standards through cutting-edge combustion technology.
Engineering Precision and Driving Dynamics
Designed for both comfort and performance, the B58’s modular architecture supports seamless integration with BMW’s xDrive all-wheel drive and adaptive suspension. This synergy delivers exceptional handling, minimal drivetrain vibration, and a refined ride—making every journey as enjoyable as it is precise.
Practical Excellence and Driver Experience
Beyond raw power, the B58 engine enhances the 840i’s refinement with near-silent operation and instant throttle response. Interior craftsmanship, intuitive technology, and spacious luxury create a cabin where performance meets sophistication—ideal for discerning drivers seeking both speed and comfort.
The 2020 BMW 840i with B58 engine redefines what a luxury performance sedan can achieve—delivering power, precision, and poise in one seamless experience. Whether on the open road or city streets, this engine proves why the B58 remains a cornerstone of BMW’s engineering legacy. Upgrade your drive with the B58 and feel the difference today.
The BMW B58 is a turbocharged straight-six engine, which began production in 2015. [1] The B58 replaced the N55 and was launched in the F30 340i. [2] The B58 is part of BMW's modular engine family, each engine using a displacement of 500 cc (30.5 cu in) per cylinder, following the B38 and B48 engine.
[3] The B58 engine was named to Ward's World's 10 Best Engines five times, in 2016 (installed. BMW only used this engine on 2020+ 540i, 740i, 840i, X5, X6, and X7 "40i" models as well as the 2019-2020 Toyota Supra. The "M40i" M Sport models used the B58D engine with a traditional exhaust manifold.
Why can't I find any tuned 840i since B58? All times are GMT. The JB4 is the most advanced and highly featured tuning system available for your B58 powered BMW. Power gains are up to 60hp to the wheels (80hp crank) on a completely stock B58 engine on pump gas.
BMW's B58 turbocharged inline-six powers 41 models across BMW, Toyota, Morgan, and Ineos. A 2025 update adds more power, torque, and efficiency. BMW B58 General Information FAQ's Below is some general FAQ's including specs, design, and more about the BMW B58 engine.
What is the BMW B58? BMW's B58 engine is a 3.0L inline-6 turbocharged, direct injection gasoline engine produced from 2016-present. As with the N55, the B58 engine uses a single twin. The BMW B58 engine powers many of the brand's high-performance sedans, coupes, SUVs and sports cars.
Find out exactly which BMW models utilize this acclaimed 3.0L turbo inline. Detailed specs and features for the Used 2020 BMW 8 Series 840i including dimensions, horsepower, engine, capacity, fuel economy, transmission, engine type, cylinders, drivetrain and more. Complete BMW B58 and B58TU technical guide.
Engine specifications, BMTS BM90 turbo specs, Gen 1 vs Gen 2 differences, fuel pump data, injector flow rates, and modification guides for M340i, Supra, 540i. In 2015, the BMWB58 turbocharged straight-six engine went into production. The N55 was replaced by the B58, which debuted with the F30 340i.
Following the B38 and B48 engines, the B58 is a member of BMW's new modular engine family, which includes engines with 500 cc (30.5 cu in) of displacement per cylinder. The B58 engine, which is found in the 340i and 440i, was designated one of the world.