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BMW i8: Jaw-dropping style and green performance, but why?

Why is there a BMW i8? Given the relative simplicity, affordability, practicality and energy efficiency of BMW's i3 sedan – available as a $42,000 all-electric or $46,000 extended-range EV – why design, engineer and build the much more complex and expensive ($137,450) but much less practical, exotic plug-in hybrid i8 2+2 sports car? Are i8 sales really worth BMW's huge investment of engineering effort and dollars? In 2015, BMW sold 2,265 i8s in the US, or about 189 a month. That compares to 11,024 (919 a month) for BMW's own i3, an estimated 27,840 (2,320 a month) for Tesla's battery-only EV Model S sedan and 1,024 (85 a month) for Cadillac's handsome, more practical and less expensive (but ridiculously overpriced and dismal-selling) ELR extended-range-EV luxury coupe. Are such sales really worth BMW's huge investment of engineering effort and dollars? The i8's lightweight Carbon Fiber Reinforced Plastic (CFRP) "Life Module" passenger cell rides on an aluminum "Drive Module" chassis that houses its complex propulsion system – a 228-horsepower, 1.5-liter turbocharged gas 3-cylinder (half of BMW's 3.0-liter twin-turbo straight six) driving its rear wheels through a six-speed automatic and a 129-hp electric motor twisting its front wheels through a "two-stage" automatic – and a 5-kWh lithium-ion battery. Its drag coefficient (Cd) is an aero-slick 0.26, and BMW says it can run on battery energy alone for up to 22 miles. Its total system output is a healthy 337 horses, and its EPA economy is 76 miles per gallon equivalent in gas-electric mode, but just 28 mpg when it's gas-only. A Driver Experience Control and an eDrive button offer EV and Comfort modes, plus Eco Pro (12 percent more range) and Eco Pro+ (12 more). So what is this gorgeous plug-in hybrid sports car like to drive and live with? I missed its press launch so have been hoping for some quality time with one ever since. Production has been limited, and US press cars are few, but BMW said I would eventually get my chance. It finally happened. If the unlovely i3 is a green technology revelation, this supermodel-sexy i8 is a green styling and performance revolution. If the i3 is the practical soccer mom of battery BMWs, the i8 might be the ultimate Teutonic trophy wife. But really, why do it? For starters, just look at it. Some might see a new, high-tech take on the Giugiaro-designed BMW M1 mid-engine sports car. Just 453 of those were built from 1979 to 1981.

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

BMW discussing supercar collaboration with McLaren

BMW is reportedly considering a new halo supercar. But rather than go it alone, word has it that the Bavarian automaker is discussing a potential partnership with McLaren to make the idea a reality. This according to Britain's Car magazine, which suggests that negotiations are well underway. The proposal would see the BMW supercar based on the same architecture that will to underpin Woking's P16 project that's set to replace current 650S. Rather than use the 3.8-liter twin-turbo V8 that McLaren developed together with Ricardo, the Bimmer version would use Munich's own engine: a 4.0-liter V8 with quad turbochargers – two conventional spools and two more electrically driven chargers. Their combined effect would net an expected 750 horsepower. Further differentiations on McLaren's carbon monocoque architecture for use in the BMW would include custom bodywork, aerodynamics, and interior fitments to include a unique instrument panel. Production, however, would be handled at the McLaren Production Centre in Woking, to the tune of several hundred units per year. The project would take the place of several aborted programs undertaken internally at BMW. One called for an entirely unique supercar developed in-house, referred to internally as the M100. When that project was aborted so that BMW could concentrate on the i sub-brand, BMW's own skunkworks shifted its focus to developing a more performance-focused version of the i8, known by some as the i8 CSi. When that project was canned as well, discussions with McLaren commenced. It wouldn't be the first time BMW would outsource development of its own supercar, or even the first time BMW would collaborate with McLaren on such a project. Initial development work on the original M1 in the 1970s was undertaken by Lamborghini before being taken in-house. And, of course, BMW provided the engine for the legendary McLaren F1. Meanwhile McLaren performed a similar function for Mercedes-Benz with the SLR, demonstrating Woking's experience in building flagship supercars for German automakers. This latest project could suffer the same fate as the M100 and i8 CSi programs. But if it is approved, it could yield both coupe and convertible versions, with the first slated to surface at the Frankfurt Motor Show in 2017 and reach dealerships in 2019.