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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.

40+ cars that barely avoid the gas guzzler tax

The Gas Guzzler schedule, with mpg ratings and charges that haven't changed since 1991, lays out which fuel-swillers owe what to Uncle Sam.
I started thinking about the "Gas Guzzler Tax" - considerably less well known as The Energy Tax Act of 1978 - when I was driving Dodge's new Challenger SRT Hellcat last week. Unsurprisingly for a car that can burn 1.5 gallons of gas per minute at max tilt, theoretically able to empty a full tank of premium in about 13 minutes, the Hellcat will be subject to the Gas Guzzler Tax schedule when it goes on sale.

Audi celebrates original RS with RS4 Avant Nogaro selection

It's been 20 years since Audi unveiled the RS2 Avant, the progenitor of an entire range of ridiculously fun luxury cars, including the RS3, three generations of the RS4, three generations of RS6, the RS5, and new RS7 and RS Q3. In honor of the anniversary, Audi is paying tribute to the Porsche-fettled wagon by releasing a special edition of its modern-day counterpart, the RS4 Avant.
Called the RS4 Nogaro selection, it sports vibrant Nogaro Blue paint, which is similar to the RS2's signature color. The twin oval exhaust, window frames, and grille surround are finished in gloss black, while the roof rails are matte black. 20-inch wheels in a V-spoke pattern are the RS4 Nogaro's final exterior tell.
In the cabin, Nogaro Blue Alcantara suede accents are optional on the door panels and seat inners (black suede is also available), while Valcona leather comes standard on the seat outers. The steering wheel, meanwhile, features Nogaro Blue contrast stitching and is wrapped in black leather. Blue threads in the carbon fiber trim and a special-edition shifter round out the interior work on this special edition RS4.