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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.

24 Hours of Le Mans an on-and-off love affair

There was little usual about this year's 24 Hours of Le Mans - intermittent rain in the weeks before the race meant cars didn't get on track as much as they wanted, and intermittent rain during the race meant cars went off track a lot more than they wanted. The race started with a wet track, and one of the records broken because of the random downpours was the number of times the safety car led the field - 11 times this year - although the record of two hours and 53 minutes of lapping behind the safety car, set in 2011, was not eclipsed.
None of that served to dampen the action. With little more than an hour left in the race there were cars still only a few seconds apart fighting for position, leads still changing because of pit stops and everyone drafting anyone they could.
Things didn't go the usual way up front, either - well, not exactly...

Tuner may sue Monaco hotel for damage caused by valet's injury

It's relatively common to hear about unethical valets taking a joyride and wrecking high-performance cars. However, a recent 'accident' in Monaco might be one of the weirdest cases ever. Of course, now the lawyers may get involved.
Andreas Belzek, owner of tuning firm Prior Design, was driving his highly modified, black with gold pinstripes, widebody Audi R8 (pictured above) to the Hotel de Paris in the famously rich city on the shores of the Mediterranean. Upon arriving, he was going to check in but wanted to park the supercar himself, which was against the hotel's rules. He protested to the valet but eventually gave in and handed over the keys. Then the problems began.
The Audi barely moved before the valet herniated a disk in his back and couldn't leave the car. The police and paramedics arrived to the scene, which had to be quite a crowd in a city as tiny as Monaco. To get the guy out, the rescue crew had to hook him to a special hoist and carry him out, according to Germany's Focus Online. Belzek claims the efforts to save the man caused roughly 10,000 euros ($13,622) in damage to the car's carbon fiber, Alcantara and Nappa leather interior.