What Engine Powers the 2020 BMW 840i: Full Specification Guide

The 2020 BMW 840i stands as a benchmark in premium performance sedans, powered by a meticulously engineered engine that balances power, efficiency, and refinement—making it a standout choice for discerning drivers.

The 2020 BMW 840i is equipped with a 3.0-liter inline-six cylinder engine, officially designated the BMW B58. This turbocharged, internally worn flat-six delivers 523 horsepower and 393 lb-ft of torque. Designed for dynamic performance and smooth power delivery, the B58 combines advanced direct injection, variable valve timing, and efficient turbocharging to ensure both exhilarating driveability and balanced fuel economy within its class.

Powering the 840i, the B58 engine enables 0-60 mph in just 4.0 seconds, blending brute force with responsive throttle feedback. Its compact layout optimizes weight distribution, while integrated driver aids like adaptive cruise control and dynamic stability control enhance safety. Whether navigating city streets or cruising highways, the engine delivers a refined yet powerful experience tailored to BMW’s signature driving dynamics.

The 3.0-liter B58 engine in the 2020 BMW 840i features dual variable valve timing, a 3.0-liter displacement, and a twin-scroll turbocharger for efficient power delivery. With advanced emissions controls, it meets stringent environmental standards without compromising performance. This engine supports the 840i’s sleek design, premium interior, and cutting-edge technology, reinforcing its position as a leader in the luxury performance segment.

The 2020 BMW 840i’s B58 engine is more than a powerplant—it's a hallmark of engineering excellence. For drivers seeking precision, performance, and refinement, this 3.0-liter inline-six delivers an unforgettable experience. Explore the full specs and discover why the 840i remains a top choice among luxury sedans.

Fans of BMW's I-6 engines, take note: There are new 8-Series variants that will appeal to you. Enter the 840i, which packs a 335. 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.

View complete technical specifications for 2020 BMW 840i. Includes performance data, fuel economy, dimensions, engine details, and more. The BMW 840i and 840i xDrive Coupe and Convertible models are powered by the latest iteration of BMW's TwinPower 3.0 liter inline 6-cylinder Turbo engine.

Weighing 13 lbs less than its predecessor, the new engine produces 335 hp between 5,000 - 6,500 rpm and 368 lb-ft of torque between 1,600 - 4,500 rpm. Technical Specs: BMW 8 Series (G15) 840i (340 Hp) Steptronic Coupe /2019, 2020/ Fuel consumption, Dimensions, 340 Hp, 250 km/h, 155.34 mph, 0-100 km/h: 5 sec, 0-60 mph: 4.8 sec, 7.1-7.3 l/100 km, 33.1 - 32.2 US mpg, 39.8 - 38.7 UK mpg, 14.1 - 13.7 km/l. Explore the BMW G15 8 Series Coupe 840i 2019, 2020 detailed specs, including 0-60 mph times, horsepower, and handling data.

Get all the Info. Specs datasheet with technical data and performance data plus an analysis of the direct market competition of BMW 840i Coupe in 2020 the model with 2-door fastback coupe body and Line-6 2998 cm3 / 182.9 cui, 250 kW / 340 PS / 335 hp (SAE net) of power, 500 Nm / 369 lb-ft of torque, 8. See detailed specs, features, packages and dimensions by trim level for the 2020 BMW 840.

Explore the BMW 840i's engine specs, configuration, oil requirements, and service intervals for optimal performance and care. Read about the 2020 BMW 8-Series performance, horsepower, 0-60 times, and engine options at U.S. News & World Report.