2010 Audi S4 3.0t Quattro Prestige Awd Sunroof Nav 49k Texas Direct Auto on 2040-cars

Auto blog

Audi spotted testing new TT RS Roadster at the Nurburgring

Spied testing on the Nordschleife in Roadster form is the forthcoming Audi TT RS. It's based, of course, on the new TT that we've already seen in S spec, but this one will be even faster. To that end, powering the new convertible (and its fixed-roof coupe counterpart) is expected to be Audi's signature turbocharged inline-five driving a good 400 horsepower or so to all four wheels through either a six-speed manual or Audi's S-tronic transmission. That output ought to put it in prime position to outgun the likes of the Porsche 718 Boxster S with its 350 hp and the new Mercedes-AMG SLC43 that's good for 362 hp. The BMW Z4 sDrive35is isn't far behind with its 335 hp, though a new Z4 M would be a welcome addition to the party. We're expecting the brand of the Four Rings to reveal the TT RS coupe before long, and the roadster should follow six months or so afterwards. Then Audi's RS line will be replete with performance models including the RS7 we get here, the RS3, RS6, and RS Q3 they sell overseas, and this pair of TT RS two-doors. Related Video:

Audi is working on a suspension that gets power from bumpy roads

Regenerative brakes aren't new. They're on virtually every hybrid and EV, and they're even starting to pop up on traditional gas-powered cars, like with the i-ELOOP-equipped Mazda6. But even with these systems, cars can get more efficient, and Audi thinks it found yet another source of wasted energy. The source? The suspension. The idea is to turn the kinetic energy that goes into the dampers into usable energy instead of as waste heat. Audi isn't the first auto company to come up with regenerative suspension – nearly three years ago, ZF introduced its GenShock technology, which used a valve attached to traditional, oil-filled hydraulic shocks to recapture kinetic energy from movement caused by bumps in the road. Audi's prototype technology, which it calls eROT, replaces traditional dampers with horizontally oriented electromechanical rotary dampers. eROT is apparently short for electromechanical rotary damper. Neat. In testing, eROT recovered an average of 100 to 150 watts on a typical German road, three watts from a fresh piece of pavement, and 613 watts on a rough stretch of tarmac (wattage is calculated as power over time, so this is actually the rate at which the system harvests energy). The dampers channel that energy to a tiny, 0.5-kWh, 48-volt battery. The prototype is claimed to cut CO2 emissions by three grams per kilometer (4.8 grams per mile), while the company believes a future production version could save up to 0.7 liters of fuel per 100 kilometers of driving. Converting the savings to American miles per gallon isn't easy, so we'll use a practical example. In the US, the Q7's supercharged 3.0-liter V6 returns a combined rating of 21 miles per gallon, which works out to 11.2 liters per 100 kilometers. Apply eROT's 0.7L/100km savings, and the Q7's economy would improve to 10.5L/100km, or 22.4 mpg, a 1.4-mpg improvement. That's not huge, but because math, 0.7L/100km is more dramatic on a more fuel efficient vehicle – taking an A3's 27-mpg combined rating and adding eROT would drive efficiency up 2.4 mpg, for example. There are a few other big benefits beyond fuel and emissions savings – Audi claims eROT provides a more comfortable ride than traditional active suspensions, because engineers can tune the compression and rebound strokes independently of each other. Beyond that, the horizontally oriented rear suspension geometry means more cargo space, since the dampers don't poke up into the cabin like they normally do.

The List #0178: Attend Rally School

Jessi and Patrick attend Team O'Neil Rally School in Dalton, NH, to learn how to shred in the snow. Veteran instructor and school founder Tim O'Neil demonstrates left-foot braking, slalom techniques, turning, proper ways to blip the throttle and more in this episode. They get behind the wheel of modern Ford Fiestas with front-wheel drive and a vintage Audi Quattro with all-wheel drive. They catch on quickly, and O'Neil tells Patrick: "Tell your grandchildren you are a rally driver." Watch as our hosts check "attend rally school" off their list. Have an RSS feed? Click here to add The List. Click here to subscribe to The List in iTunes. Click here to learn more about our hosts, Jessi and Patrick. Audi Ford Subaru The List Videos rally quattro