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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.

Audi rumored to buy Alfa Romeo, officials deny it

For more than two years, Volkswagen has been making public statements about its willingness to buy Alfa Romeo and quadruple the Italian brand's sales, and for just as long, Fiat CEO Sergio Marchionne has replied with some version of "Mr. Piëch, drop it." According to a report in Ward's Auto, all that jousting might be over: it claims that sources close to both Marchionne and Audi CEO Rupert Stadler admit that the two are in talks for Audi to buy not just Alfa Romeo, but a production plant in Italy. In fact, a final deal could possibly include partsmaker Magnetti Marelli.
Against that backdrop, a report by German news weekly Stern quotes a Fiat spokesmen as saying it doesn't comment on rumors and an Audi rep has said flatly that "There is no substance in the news." If a sale is being arranged, the timing would seem to point to how eager Fiat is to raise cash to complete its major initiatives. Even though Alfa Romeo continues to delay its return to the US, it just showed off the production version of the 4C at the Geneva Motor Show (shown above) and said that preferred Fiat dealerships here would get them. Then there's Alfa's recently concluded deal with Mazda to develop a roadster based on the next generation MX-5 Miata - a deal that would seem to help both the Italian and Japanese brands.
The monetary issues are troublesome, though. Fiat is taking a beating in the European market and its weak-kneed balance sheet is delaying gotta-have-it products like the Jeep Cherokee. Fiat has been talking to banks about getting money to buy the rest of Chrysler and those financial institutions have also raised issues about debt and cash reserves, and the nasty game of chess Fiat is playing with the United Auto Workers (and now the court system about the portion of Chrysler it doesn't own) could end up blowing another hole in Marchionne's plans. It is possible that this could finally have convinced Fiat to at least see how serious Audi's parent company, Volkswagen, is about buying Alfa Romeo. Or it could be just another rumor.

NHTSA awards Audi A3 and S3 sedans five stars

The Audi A3 and S3 sedans aced the New Car Assessment Program tests run by the National Highway Traffic Safety Administration, each scoring five stars overall. The A3 sedan adds this latest five-star rating to its Top Safety Pick+ award bestowed upon it by the Insurance Institute for Highway Safety earlier this year, and Audi says it's the only Euro premium luxury compact to do that double. The only place either car dropped a single star was for a male driver in the frontal barrier test and in the rollover test. It's clear from the lengthening list of top marks – and its list of safety technology – that it's among the safest sedans you can buy. Featured Gallery 2015 Audi A3: Review View 36 Photos News Source: National Highway Traffic Safety Administration [1], [2] via Audi World Government/Legal Audi Safety Sedan crash test audi s3