BMW Has Confirmed a Quad-Turbo Diesel Engine – News – Car and Driver
In for an engine rebuild: my BMW M550d Touring. Factory specs: tri-turbo diesel, 0-60 mph in 4.6 s. My engine's additional spec: leaking cylinder head. : r/Justrolledintotheshop
BMW Versus Audi - The Multi-Turbo Diesel Engine Battle - autoevolution
Animation of BMW's 6 Cylinder Tri-Turbo Diesel N57S Engine (M550d and X5/X6 M50d) - YouTube
Video: BMW X5 M50d Review Explains How the Four Turbos Work
BMW replaces tri-turbo diesel with a quad turbo | Autoblog
BMW's New Diesel Engine Has Four Friggin' Turbos
Quad turbo power coming to the 3L | BimmerFest BMW Forum
BMW debuts new 'B57' diesel engine: A 3.0-liter inline-six with four turbochargers | VW Vortex - Volkswagen Forum
BMW B57 - Wikipedia
Full details on the new BMW quad-turbo diesel B57 engine
BMW Could Phase Out The Quad-Turbo M50d Diesel In 2020
BMW Could Phase Out The Quad-Turbo M50d Diesel In 2020
BMW Goes Crazy And Axes V12, Quad Turbo And 3 Cylinder Diesel Motors - AutoSpies Auto News
BMW Is Considering 750d Sedan with Quad-Turbochargers | YouWheel - Your Car Expert
BMW quad-turbo diesel '750d' to produce 290kW/800Nm? - PerformanceDrive