B58

The B58 is a turbocharged inline-6 gasoline engine developed and produced by BMW as part of its B engine family. Introduced in 2015, it was designed to replace earlier six-cylinder lines from the N54/N55 generations and to serve a wide range of BMW models, as well as a joint application in the Toyota GR Supra.

Technically, the B58 is a 3.0-liter inline-6 that features an aluminum block and heads, direct fuel injection, and a single twin-scroll turbocharger. It uses BMW's variable camshaft timing systems to optimize low-end response and high-end power, balancing performance with efficiency. The engine is designed for smooth operation, broad usable torque, and refined real-world drivability.

Performance and variants vary by application. Typical outputs range from about 320 to 382 horsepower, with torque figures roughly 332 to 369 lb-ft, depending on tuning and model year. Higher-output versions appear in performance-oriented BMW models, while the engine is also used in other configurations and markets, sometimes with unique calibration for partner vehicles.

Applications include a wide span of BMW models, such as the 3 Series, 4 Series, and 5 Series in various trim levels, as well as X3, X4, X5, X6, X7 crossovers, and the Z4 roadster. The engine is notably used in the Toyota GR Supra, where it is tuned to Toyota’s specifications within the joint development program between BMW and Toyota.

Overall, the B58 is recognized for delivering strong torque and smooth power delivery, along with improved efficiency compared with its predecessors, making it a central engine in BMW’s lineup and in the Supra collaboration.