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Audi builds 5-millionth vehicle with Quattro

Quattro, the trademark name Audi has put on its all-wheel-drive system engineered for passenger vehicles, recently celebrated its five-millionth installation. The driveline has been offered in more than 140 different vehicles since its introduction more than three decades ago.
The all-wheel-drive technology made its world debut at the 1980 International Geneva Motor Show, beneath the floorpan of the Quattro Coupé, a low-volume two-door. It didn't take consumers long to embrace Audi's innovative approach. While most four-wheel-drive systems at that time utilized heavy transfer cases or second cardan shafts, Quattro was virtually tension-free, light, compact and efficient. Most importantly, enthusiasts found it was especially suitable for sports cars.
Today, the automaker offers Quattro on its full line of passenger vehicles and it is unquestionably successful (the technology enjoyed a 43 percent take rate in 2012). On models with transverse-mounted engines (A3 and TT), Audi uses an electronically controlled multi-plate clutch with hydraulic actuator. Under normal conditions, the clutch sends power almost exclusively to the front wheels (if wheel slippage occurs, up to 100 percent of the torque may be sent to the rear). Vehicles with transverse-mounted engines (A4, A5, Q5, etc...) use a self-locking center differential sending 40 percent of the engine torque to the front axle and 60 percent to the rear under normal conditions (it is able to send the majority of the power to the axle with better traction when needed). The highest-performing Quattro systems use torque vectoring to further improve cornering grip and speeds.

Hackenberg says next Audi A4 set for Frankfurt debut

The current Audi A4 is among the oldest vehicles in the brand's lineup. Having debuted back in 2008, it's long overdue for an update, and according to our friends at Indian Autos Blog, that'll happen in roughly six months. IAB spoke to Audi research and design chief Ulrich Hackenberg, who indicated that the fifth-generation A4 will be shown at the 2015 Frankfurt Motor Show in September. The new sedan will be unveiled in "a pre-presentation" before the auto show itself, Hackenberg told IAB, adding that "you'll be happy to see it." Information beyond that, though, remains sparse. Based on our previous spy photos, we expect the new A4 to ride on the Volkswagen Group's modular MLB Evo platform that's been stretched to accommodate a larger wheelbase. The styling, meanwhile, will be more evolutionary, inspired in part by the new TT. Expect more on the next-generation A4 as September approaches. Related Video:

Audi promises next A8 on sale by year's end, LED Matrix lamps to be available [w/video]

Audi has just released details about its new Matrix LED headlamps, but just as illuminating as the new lighting technology is confirmation that the next A8 will appear "on the market at the end of 2013." While Audi is calling the model new, expectations - and the spy shots above - suggest more of a traditional mid-cycle refresh.
Audi says that its new A8 Matrix lights are comprised of 25 high-beam LEDs, clustered in groups of five paired with reflectors. Unlike traditional automatic high-beam setups, the Matrix array is so precise that it "blanks out light that would shine directly onto oncoming and preceding vehicles" while continuing to use full high-beam power on other sections of the road and shoulder not occupied by other vehicles. Further, the camera- and electronic brain-governed system can dim or extinguish LEDs as necessary to deal with traffic. The active system also differs from today's adaptive headlamps by not requiring servo motors to direct light, yet they can still function as cornering headlamps - ones that can predict a road's trajectory because they are linked with the car's GPS system. Interestingly, the system also works with Audi's optional night vision system. When the latter detects a pedestrian in the dark, it automatically flashes a batch of LEDs to put both the driver and pedestrian on notice about each others' presence.
Only one problem in all of this trick lighting business: they aren't legal here in the US, at least not yet. Audi and other automakers are currently petitioning the National Highway Traffic Safety Administration, trying to sell the government agency on the technology's safety benefits. For the moment, Matrix headlamps are likely to remain forbidden fruit, but you can check them out and see what you might be missing in the video below. As for the 2015 A8, we're guessing it'll surface at the Frankfurt Motor Show in September.