BMW B38 engine

The BMW B38 is a turbocharged straight-three DOHC petrol engine, which replaced the straight-four BMW N13. Production started in 2013.
It is part of a modular BMW engine family, of straight-three, straight-four and straight-six alloy block and head petrol engines, which use a displacement of per cylinder in the 1.2 and per cylinder in the 1.5. It specifically shares a lot of components with the BMW B37, due to their same size/configuration.
The B38 is used in front-wheel drive cars, as well as BMW's traditional rear-wheel drive and all-wheel drive configurations. The first car to use the B38 is the BMW i8 hybrid sports coupé, where it is used as a transverse mid-mounted engine.

Design

The B38 features direct injection, an 11:1 compression ratio, variable valve timing and the single-scroll turbocharger with the world's first aluminium turbine housing, manufactured by Continental.
On the 1.2liter versions, the bore is and the stroke is. On the 1.5liter versions, the bore is and the stroke is.

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2014–2018 F55/F56 Mini One
B38A15M0 / B38B15M0 (B38A15M1/B38B15M1 for post-2018 manufactured engines)

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