--- title: "BMW’s New Engine Has Four Turbochargers" description: "And it's a diesel. " date: "2016-05-03" modified: "2016-05-03" authors: - name: "Max Prince" link: "https://www.thedrive.com/authors/max-prince" url: "https://www.thedrive.com/news/3296/bmws-new-engine-has-four-turbochargers" categories: - "News" tags: - "BMW" - "Diesel" - "Turbo" --- # BMW’s New Engine Has Four Turbochargers ![]() *\www.thedrive.com* Three is better than two, just like two is better than one. That’s the conventional wisdom, at least, disseminated everywhere from Ecclesiastes to the Arby's drive-thru menu. Evidently, BMW's into that whole thing, too. Not contented with its current triple-turbo “N57S” engine, the luxury automaker has unveiled its next-gen diesel motor. And, yeah, this puppy’s got four turbochargers. The [announcement]() comes from the Vienna Motor Symposium, undoubtedly the most German-sounding event in the history of Germany and possibly events. Like the outgoing tri-turbo engine, the new “B57” is a straight-six with 3.0 liters of displacement. Peak output is 394 horsepower, on tap from 4000 to 4400 rpm. Torque, as you’d expect from a diesel engine with four turbos, is healthy—561 pound-feet, available between 2000 and 3000 revs. And that’s not even exploiting the full potential; engineers had to cap the torque to keep from destroying the automatic gearbox. Because four turbos. Technically speaking, the B57 retains BMW’s two-stage forced induction system. But whereas the old engine used a single low-pressure turbo for grunt and two high-pressure turbos in upper revs, the new engine replaces the bigger turbo with two smaller guys on a common exhaust. The result, according to BMW, is five percent better fuel economy and, because of some clever packaging, a negligible weight penalty. It also allows owners to tell everybody that their car has *four freakin' turbochargers*. The new engine will make its first appearance in the flagship 7-Series sedan. BMW says that, equipped with the quad-turbo six-cylinder, an all-wheel drive 750d will do 0-60 mph in 4.5 seconds. Don’t be surprised to see the B57 in the next wave of M Performance models, too, specifically the X5 and X5 SUVs, as well as the next 5-Series. Sadly those models will almost certainly be *verboten* in the U.S. market. ### Author social links [Twitter]()