2002 Audi A6 Quattro Base Sedan 4-door 2.7l...no Reserve 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.

Which will Dieselgate hurt more, Volkswagen or US diesels?

The most damning response to the news Volkswagen skirted emissions regulations for its diesel models may have actually come from the Los Angeles Times. On Saturday, the Times published an editorial titled "Did Volkswagen cheat?" The answer was undoubtedly yes. When you can't drive down Santa Monica Boulevard without seeing an average of one VW TDI per block, the following words are pretty striking: "... Americans should be outraged at the company's cynical and deliberate efforts to violate one of this country's most important environmental laws." VW has successfully cultivated a strong, environmentally conscious reputation for its TDI Clean Diesel technology, especially in states where emissions are strictly controlled. A statement like that is like blood all over the opinion section of the Sunday paper. The effect on VW's business, even Germany's financial health, was already felt Monday when the company's shares plummeted 23 percent in morning trading. The statement on Sunday from VW CEO Dr. Martin Winterkorn says "trust" three times. That probably wasn't enough in nine sentences. Writers over the weekend have compared VW's crisis to one at General Motors 30 years ago, when it was the largest seller of diesel-powered passenger cars until warranty claims over an inadequate design and ill-informed technicians effectively pulled the plug on the technology at GM. In a sense, VW is in the same boat as GM because it has fired a huge blow into its own reputation and that of diesels in passenger cars. And just as automakers like Jaguar Land Rover, BMW and, ironically, GM, were getting comfortable with it again in the US. VW of America was already knee-deep in its other problems this year. Its core Jetta and Passat models are aging and it needs to wait more than a year for competitive SUVs that American buyers want. The TDIs were the only continuous bright spot in the line and on the sales charts. Even as fuel prices fell and buyers shunned hybrids, VW managed to succeed with diesels and show that Americans actually care about and accept the technology again. Fervent TDI supporters might actually lobby for that maximum $18 billion fine to VW. I've personally convinced a number of people to look at a TDI instead of a hybrid. Perhaps not so much for stop-and-go traffic, but I know buyers who liked the idea that a TDI drove like a normal car and wasn't packed with batteries.

Audi says gas-electric Q7 E-Tron PHEV coming to US, China

That 166 MPGe diesel-electric Audi Q7 E-Tron Quattro we wrote about last week from the Geneva Motor Show? The US might eventually get those, too. With one important change. Audi disclosed details about the upcoming Q7 E-Tron Quattro SUV plug-in hybrid at the Geneva show that were truly impressive. The model will be able to go as far as 35 miles on electric power alone and will have a fuel-efficiency rating of 166 miles per gallon equivalent. The 373-horsepower beast will also be able to go from 0 to 60 miles per hour in about six seconds. Like we said, impressive. Now, we're finding out from Automotive News Europe that not only will the model debut in Germany next year, but the US and China will get versions as well. The difference? Whereas the standard European version pairs a 3.0-liter six-cylinder diesel engine with an electric motor, our version will use a 2.0-liter turbocharged gas engine as its non-electric mill, said Automotive New Europe, citing comments from Audi development chief Ulrich Hackenberg in Geneva. No word on when the US will start seeing its version of the Q7 E-Tron, so we'll just have to take a look at Audi's press release below from earlier this month for full details on the diesel Q7 E-Tron. Related Videos: Great class, minimal emissions – the new Audi Q7 e-tron 3.0 TDI quattro First diesel plug-in hybrid with quattro drive in its segment Best value in the segment: up to 56 kilometers (34.8 mi) electric range Maximum efficiency with hybrid management Audi Q7 e-tron 3.0 TDI quattro It accelerates from a standstill to 100 km/h (62.1 mph) in six seconds, and yet consumes not even two liters of diesel per 100 kilometers (117.6 US mpg). The Audi Q7 e-tron quattro is sporty, comfortable and at the same time highly efficient. The world's first TDI plug in hybrid with quattro drive, it is also the first plug-in hybrid with a diesel engine from Audi. The Q7 e-tron quattro is Audi's second model with a powerful plug-in hybrid drive system. The model combines the best of two worlds: Powered by the lithium-ion battery, the large SUV covers up to 56 kilometers (34.8 mi) on electric power alone – quietly, powerfully and with zero local emissions. Together with the diesel engine, the car can cover a total distance of 1,410 kilometers (876.1 mi). Sporty power and minimum consumption The Audi Q7 e-tron quattro is the world's first plug-in hybrid car with a six-cylinder diesel engine and permanent all-wheel drive.