2008 Audi S4 Cabriolet 6-speed on 2040-cars

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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.

2014 Audi R8 GT zooming toward Le Mans reveal

According to a report from Autocar in the UK, the Audi R8 is set to get something of a swan song for its own going-away party in the form of an updated GT model for the 2014 model year. If Autocar is right, this even higher-performance Audi R8 will debut at the upcoming 24 Hours of Le Mans race in France.
The 2014 Audi R8 GT Plus will reportedly get a tuned version of the much-loved 5.2-liter V10 engine that Audi has used to good effect in past R8 models. A six-speed manual or seven-speed dual-clutch automatic would send power to the rear wheels, enabling a 3.4-second 0-62 mile per hour run and a top speed of 199 mph.
Judging from spy shots that we've already seen (reprised above), the new GT Plus will be fitted with an aggressive body kit that includes a massive rear wing, a more prominent front splitter and enlarged side blade ducts. A Spyder version of the GT Plus may be on tap for 2015. Pricing, obviously, is unknown, as is any potential launch date. In other words... stay tuned.

1984 Audi Sport Quattro expected to hammer at nearly half a million dollars

The highest prices paid at automobile auctions continue to be claimed by European sports cars, with names like Ferrari and Bugatti forever topping the lists. But what we have here is not quite a sports car. It's more of a hot hatch, but its still expected to fetch between $350,000 and $475,000 when it goes up for auction next month in Arizona. That's because this is no ordinary hot hatch... it's the prototypical hot hatch: the legendary Audi Sport Quattro, one of the most maniacal and dominant homologated rally machines ever devised. Shorter in wheelbase and dartier of handling than the Ur-Quattro that came before it, the later Sport Quattro was built to comply to with the FIA's legendary Group B regulations. That meant that it competed with the likes of the Lancia 037, Ford RS200 and Ferrari 288 GTO – beating them all in the World Rally Championship one after another – but also had to be built in limited quantities and sold to the public. And so Audi and its nascent Quattro GmbH skunkworks division built 214 road-going examples of the Sport Quattro, and this could very well be the most immaculate example in existence. It was previously owned by noted collector Yoshikuni Okamoto of Kobe, Japan, and with barely more than 5,000 miles on the odometer, recently underwent an exhaustive service at Audi of Fairfield, CT – one of the company's largest dealerships – and though the Sport Quattro was never offered for sale in the US, this one is now fully registered for use on American roads and comes in impeccable condition despite its 30 years of age. The gavel drops during the RM Auctions event at the Arizona Biltmore on January 15-16, 2015. Even the low end of the pre-auction estimate is nearly double the $184,860 which Sports Car Market reports Bonhams sold an '85 Audi Sport Quattro in September 2013. Featured Gallery 1984 Audi Sport Quattro: RM Arizona 2015 View 21 Photos News Source: RM AuctionsImage Credit: Erik Fuller/RM Audi Auctions Hatchback Performance rm audi sport quattro