2010 Audi S4 3.0t Quattro Premium Plus...certified on 2040-cars

Auto blog

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 and FAW to launch A6 E-Tron in China

Audi and its Chinese joint-venture partner FAW have announced that they'll be building a production version of the Audi A6 E-Tron Concept, shown at the 2012 Beijing Motor Show. Based on the China-only long-wheelbase A6, the plug-in-hybrid model is being targeted specifically at the People's Republic.
Audi is promising a 50-kilometer (31-mile) electric range for the fuel-sipping sedan, although there are precious few details beyond that. We do know, though, that this will be a Chinese-built vehicle, with assembly slated for the FAW-Volkswagen joint-venture factory in Changchun. We presume we'll find out more when the Beijing Motor Show kicks off a few weeks from today.
"We are the market leader in China's premium segment and will continue systematically with the application of efficiency technologies. Audi is thus supporting the Chinese government's targets for the reduction of fuel consumption," said Dr. Dietmar Voggenreiter, the president of Audi China.

2020 Acura NSX leads this month's list of discounts

With its 573-horsepower hybrid powertrain and 0-60 time of 2.9 seconds, there's no doubt that the Acura NSX is an impressive machine. As its production numbers and pricing adjustments attest, however, it's not a big seller. And this month, Acura's high-end coupe has a larger monetary discount than any other vehicle in America. Buyers of the 2020 Acura NSX are scoring an average cut of $19,659 off the car's $159,530 sticker price. That equals a 12.3% savings for an average transaction price of $139,871. That's still a hefty chunk of change, but it's a reasonable sum for a vehicle with the NSX's performance chops. The next two vehicles in order of largest discounts follow the same luxury performance coupe trend. The Audi R8 is a much pricier vehicle than the NSX, which means its $16,146 discount only represents 8% off its average $200,086 sticker, but we doubt buyers are complaining. Next up is the BMW M8, a vehicle that has been at or near the top of this list more than once. The M8's average discount of $15,403 represents a 10.4% savings off its $148,880 retail price. Interestingly, that puts the M8 and NSX within a few thousand dollars of each other. For a look at the best new car deals in America based on the percentage discount off their suggested asking prices, check out our monthly recap here. And when you're ready to buy, click here for the Autoblog Smart Buy program, which brings you a hassle-free buying experience with over 9,000 Certified Dealers nationwide. Related Video: