10 Diesel Engines Packing the Most Horsepower You’ll Actually Care About

3. BMW 3.0L I6 Quad-Turbo Diesel — Four Turbos, Four Times the Fun

Yes, BMW really made a quad-turbo diesel! The B57D30S0 delivers 394 HP and 561 lb-ft torque, plus a mild hybrid system to cut turbo lag. Found in various BMW models from 2016 to 2020, this engine is a mix of power, efficiency (about 42 MPG), and wild tech.