BMW B48B20A 2.0L Twin-Turbo Petrol Engine

BMW B48B20A 2.0L Twin-Turbo Petrol Engine for Sale
Specifications, Compatible Vehicles.

BMW B48B20A 2.0L Twin-Turbo Petrol Engine is one of the most refined and technologically advanced 2.0-litre turbocharged petrol engines in BMW’s modern lineup. Designed to replace the older N20 engine, the B48 belongs to BMW’s new modular engine family, which shares components across its three-, four-, and six-cylinder variants. Introduced in 2015, this engine has become a cornerstone of BMW’s efficiency and performance philosophy, offering a perfect blend of power, reliability, and fuel economy. For customers seeking a BMW B48B20A engine for sale, this power unit represents a reliable and powerful solution for a wide range of modern BMW models.

The B48B20A is a 2.0-litre inline-four petrol engine featuring an aluminium block and head, DOHC with 16 valves, and BMW’s Twin Power Turbo technology—a system that combines a twin-scroll turbocharger, direct fuel injection, and fully variable valve control (Valvetronic) with double VANOS camshaft timing. It produces between 181 hp (135 kW) and 255 hp (190 kW) depending on the tuning configuration and vehicle application, with a strong 350 Nm of torque available from just 1,450 rpm. This wide torque band ensures a responsive and smooth driving experience, ideal for both spirited driving and daily commuting.

This engine has been used across a variety of BMW and MINI models, including the BMW 320i, 330i (G20), 520i, 530i, X1, X3, and MINI Cooper S. Its versatility and efficiency make it one of BMW’s most widely adopted powerplants in both rear- and all-wheel-drive configurations. Built to comply with Euro 6 emissions standards, the B48B20A is also a favourite for engine swaps due to its compact design and powerful performance potential.

Common Weaknesses & Maintenance Notes.

Despite its advanced engineering, the B48 engine has some common weaknesses that owners should be aware of. One issue involves the timing chain and tensioner, which can wear prematurely if oil changes are neglected. Oil leaks from the valve cover or oil filter housing are also occasionally reported, particularly on higher-mileage engines. Another concern is carbon buildup on intake valves due to direct injection, which can affect performance over time. Turbocharger-related problems, such as wastegate wear or boost loss, can occur but are generally rare with proper maintenance.

To ensure long-term reliability, regular servicing is crucial. It is recommended to use only high-quality 5W-30 synthetic oil, perform oil changes every 10,000 km, and clean intake valves periodically. Monitoring coolant levels and maintaining proper turbo cooling after long drives can also help prevent common heat-related issues.
For drivers seeking a BMW B48B20A 2.0L Twin-Turbo Petrol Engine for sale, this engine offers a perfect combination of innovation, performance, and efficiency. Whether you’re restoring a BMW or replacing a worn-out engine, the B48B20A delivers the precision and reliability that define BMW engineering—making it one of the best modern petrol engines available today.