2003 Audi A6 Quattro Base Sedan 4-door 2.7l 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.

Audi reveals Prologue Allroad concept ahead of Shanghai

Audi kicked off the Prologue series of design studies with the coupe concept unveiled in LA, then followed up with the Prologue Avant wagon at the Geneva show. Now, we're seeing the third iteration in the form of the Prologue Allroad concept. Set to be unveiled next week at the 2015 Shanghai Motor Show, the Prologue Allroad picks up where the previous two left off, but takes it in a more rugged direction. At 16.8 feet, it's longer than both of the previous concepts, and stretches out to the same length as a standard-wheelbase A8. It also rides three inches higher than the Prologue Avant concept. Not only is it larger than the preceding showcars, it's also more powerful. Under the hood sits a hybrid powertrain that pairs a 4.0-liter twin-turbo V8 to an electric motor integrated into eight-speed automatic transmission. Together they produce a whopping 738 horsepower and 664 pound-feet of torque, driven to all four wheels to send the concept to 62 miles per hour in a scant 3.5 seconds – all the while returning a claimed equivalent of 98 miles per gallon. If that's not the best of both worlds, we don't know what is. Plus, the car packs an inductive charging system that Audi says it's developing for production. Massive 20-inch brake discs keep that performance in check, sitting inside 22-inch wheels, all mounted to an adaptive air suspension and four-wheel adaptive steering. Other exterior features include door lock sensors integrated into the window frame, Matrix laser headlights and LED taillights. Inside it's all angular yet elegant, swathed in dark blue, beige and brown. Display screens abound, stretching across the dashboard with a deployable OLED infotainment display in the center console. There's another OLED screen for the passengers in the pair of rear seats, who can also dock OLED tablets in the front seatbacks. A pop-up "sound spoiler" promises to envelop the cabin in music, and there's inductive charging for mobile devices as well. Together with its conceptual stablemates, the Prologue Allroad concept points towards a stylish and technologically advanced future for Ingolstadt, and we're looking forward to seeing this show car transition into production as the next A6 Allroad. In the meantime, you can scope out all the details in the press release below and view the concept from every angle, inside and out, in the slideshow above.

Recharge Wrap-up: Audi's EV SUV to be built in Brussels, Mercedes-Benz to extend EV range

European Union Industry Commissioner Elzbieta Bienkowska is demanding that Volkswagen compensate owners of cars affected by the diesel emissions scandal. She says European customers should receive the same goodwill compensation as American drivers, whom VW is providing with $1,000 worth of recompense. "The issue of compensation goes beyond the difference in the legal setup between the US and the EU and plays a fundamental role in viewing VW as a responsible and trustworthy company," says Bienkowska in a letter to Volkswagen CEO Matthias Mueller. Bienkowska has also requested detailed data about the vehicles and "corrective measures" VW is planning. Read more from Automotive News Europe. Mercedes-Benz will equip its plug-in vehicles with higher-capacity batteries as it expands its electric model range. While the PHEVs it has released so far have electric driving ranges between 14 and 20 miles, better batteries should extend that range starting around model years 2018 or 2019. After releasing a slew of plug-ins by the end of next year, Mercedes-Benz development director Dr. Thomas Weber says, "The next-generation vehicle will overcome the 30-km to 50-km hurdle and then the next generation after that will be 80-100 km when they run as pure electric cars." Read more at Green Car Reports, or from Motoring. Audi will build its pure electric SUV at its plant in Brussels, Belgium. The batteries for the vehicle based on the Audi E-Tron Quattro concept (perhaps to be called the Q6) will also be built at the Brussels plant when production begins in 2018. With this announcement comes news that production of the A1 will shift from Brussels to Martorell, Spain, while Q3 production will move from Spain to Gyor Hungary. Audi says the Brussels facility will "become a key plant for electric mobility at the Volkswagen Group." Read more at Green Car Congress, or in the press release below. Audi production network: ready for electric mobility - Premium manufacturer to produce large series of electric cars in Brussels as of 2018 - New models for Martorell (Spain) and Gyor (Hungary) - Audi CEO Rupert Stadler: "We are increasing our efficiency and bundling key competencies" Audi is preparing its international production network for the mobility of the future. Large series production of the first purely electric driven SUV from Audi will begin at the site in Brussels in 2018. The plant will also produce its own batteries.