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BMW replaces tri-turbo diesel with a quad turbo

Quad turbos have until now been the stuff of Bugattis. BMW is introducing a quad turbo diesel for the 7 Series, with nearly one hundred horsepower per turbo. It's all about making the six-cylinder 3.0-liter turbodiesel all as enticing a proposition as possible, and it faces strong competition from Audi's new twin-turbo V8 diesel available in the SQ7 TDI. The earlier, N57S engine (pictured above) utilized a triple-turbo setup good for 381 horsepower and 546 lb-ft. The new B57 version, confirmed by BMW at the 37th International Vienna Motor Symposium, adds yet another turbo for 394 hp and 561 lb-ft, and that massive torque is available from 2,000 to 3,000 rpm. It means the 7 Series gets from 0-60 mph in a snappy 4.5 seconds. The engine could produce even more torque, but 561 lb-ft is all the ZF 8HP 8-speed automatic transmission can handle. The N57S engine's dual-stage turbocharging setup consisted of one low-pressure turbocharger to take care of low-end torque, and two high-pressure turbos for the higher rev range. In the new B57 engine, the big turbo is now replaced with two smaller units on a common exhaust, to benefit from lower costs and smaller unit weight. In addition to the gains in power and torque, fuel economy has reportedly been improved by 5 percent. There are no reports yet whether the B57 TOP quad-turbo will make it to the US market, but customers in the European high end diesel saloon market will probably be very excited. Initially it will be available in the 750d xDrive version, and other top-end models like the 5 Series and the X5 will follow later on. Related Video: News Source: Krone.atImage Credit: BMW BMW Diesel Vehicles Luxury Performance Sedan confirmed vienna motor symposium

Submit your questions for Autoblog Podcast #334 LIVE!

We're set to record Autoblog Podcast #334 tonight, and you can drop us your questions and comments via our Q&A module below. Subscribe to the Autoblog Podcast in iTunes if you haven't already done so, and if you want to take it all in live, tune in to our UStream (audio only) channel at 10:00 PM Eastern tonight.
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2014 Mercedes Benz S Class

BMW 3 Series wagon configurator up, priced from $41,450

If you're still smarting from the shock of the BMW 3 Series Gran Turismo, we have good news for you. BMW has just fired up the configurator for the 2014 3 Series wagon. Prices start at $41,450, excluding an $895 destination and handling fee. The price tag will buy you a 328i xDrive Sports Wagon with a 2.0-liter inline four-cylinder engine boasting 241 horsepower paired with an eight-speed automatic transmission as standard equipment. The automaker's xDrive intelligent all-wheel drive is also standard, as is a fuel-saving auto start/stop function and 17-inch alloy wheels wrapped in all-season run flat rubber.
Buyers can step up to Sport Line trim for $2,600, and doing so graces the 3 Wagon with 18-inch wheels, high-gloss black accents outdoors as well as a sport leather steering wheel, high-gloss or aluminum interior trim and a black signature key fob. Luxury Line trim will set you back $2,300 abd features chrome trim accents outdoors and wood trim inside along with other goodies. Buyers can also opt for Modern Line trim at $2,300, complete with a turbine-design 18-inch alloy wheel, matte chrome trim bits outdoors and a range of interior trim options.
Our favorite of the bunch? That would be M Sport trim. While the tweaks are largely aesthetic, we dig the notion of 8-way power adjustable sport seats indoors and exclusive M Estoril Blue paint outside. Expect to pay $3,950 for the pleasure. Head over to the BMW site to build your own.