BMW B48

BMW B48 engine
BMW B48 installed in a 2014 Mini Cooper S
Overview
Manufacturer	BMW
Production	2014 - current
Combustion chamber
Configuration	straight-4 DOHC
Chronology
Predecessor	N20

The BMW B48 is a turbocharged straight-4 petrol engine which replaced the BMW N20 and has been in production since 2014. It is part of a modular BMW engine family of 3-cylinder, 4-cylinder and 6-cylinder engines, which use a displacement of 500 cc (30.5 cu in) per displacement.

Compared with its N20 predecessor, the B48 uses a more undersquare design. As per the N20, the block and head are made from aluminium. Other features in common with the N20 include direct injection, variable valve lift (Valvetronic), variable valve timing (Double VANOS) and a twin-scroll turbocharger.

It is currently in use in the F56 Mini Cooper S, and will be available in the BMW 225i Active Tourer by the 4th quarter of 2014. It is also scheduled for duty in other future BMW products.

The 3rd generation (F56) Mini Cooper John Cooper Works model produces 228HP. The B48 engine continues to offer an overboost function which was also available on the Prince engine. This allows the engine to increase its torque to 221 lb·ft (300 N·m) in bursts of up to 20 seconds in the F56 Mini Cooper S.

Bore/Stroke: 82 mm/94.6 mm
Engine Size: 1998cc
Aspiration/Fuel Delivery: Turbocharged/Piezoelectric Direct Injection

BMW 220i Active Tourer

BMW X1 20i

2015–

2016–

BMW X1 28i

2016–

BMW 530i

2017–