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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.

Tom Kristensen walks through a perfect lap of Le Mans in Forza 5

One of the best ways of learning a new track, aside from driving it, is to hear someone that's intimately familiar with it give you a good walkthrough. That's just what you'll get here, as the winningest driver in 24 Hours of Le Mans history, Tom Kristensen, walks you through the Circuit de la Sarthe's high-speed, 8.5-mile strip of pavement.
Kristensen is dubbed over scenes of drivers from a Forza Motorsport 5 contest lapping the track at the wheel of an Audi R18 E-Tron Quattro, adding a bit of visual sense to the Danish drivers description of the track.
With the 2014 24 Hours of Le Mans kicking off this weekend, this is just the sort of video you'll want to watch to get you in the mood. Take a look below, and then let us know what you think in Comments.

Next Audi A8 to drive itself up to 37 mph

Audi has been publicly, loudly, working the autonomous angle for years - it was working on Shelley, the autonomous TTS that would climb Pikes Peak in 27 minutes, way back in in 2009. Parent company Volkswagen had been working with Stanford University on autonomous vehicles for five years before that, and the same program collaboration would take the lead in Audi's efforts here. Where are we now? Well, a convoy of Audi A7s just drove journalists from San Francisco to the Consumer Electronics Show in Las Vegas, with "piloted driving in 100 mile stints." On the highway, the "piloted driving" A7 works up to 70 miles per hour and can change lanes, pass other cars, accelerate and brake on its own. A report in Autoweek says public adoption of the technology will continue with the next-generation A8, which will be able to navigate on its own up to 37 mph, make its way through traffic, find a parking spot and park itself. Over time, capabilities will be added - like a higher mph limit - as the technology and the legal issues are fine tuned. The A7 that just did the SF-to-LV run doesn't work in cities, only on highways, so it appears Audi is kicking this off with the abilities demonstrated in an A6 Avant last year at CES. That car had a Traffic Jam mode that only worked in dense traffic and up to 40 mph, but when in operation, it allowed the driver to watch a movie or conduct a videoconference. We have a feeling those two bits of icing won't be included in the fourth-generation A8, though. We'll be late to the party when the big sedan comes; Audi says it will go on sale by the end of 2016, but the US isn't expected to get it until 2017 as a 2018 model. Featured Gallery Audi A8 Spy Shots News Source: AutoweekImage Credit: CarPix Audi Technology Autonomous Vehicles Luxury Sedan