2006 Audi A4 Cabriolet Convertible 2-door 1.8l 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 updated RS7 Sportback in Europe

It was just a couple of weeks ago that Audi revealed a few mild updates to its A7. It even ported those changes over to the warmed-up S7 performance version. All that was missing was the full-steam RS7, and that's precisely what we have here.
Now before you get all excited, note that the new RS7 packs the same powertrain as the model it succeeds, but then again, the existing RS7 hardly lacked in the power department. The 4.0-liter twin-turbo V8 still churns out 560 horsepower and 516 pound-feet of torque, transmitted to all four wheels through an eight-speed automatic. Revealed initially for the European market (with US details presumably to follow), the 0-62 kilometers per hour time is quoted at 3.9 seconds, so the 0-60 mph time ought to match the 3.7 seconds of the preceding model.
What has changed are the subtle tweaks Audi has made to the exterior and equipment upgrades inside. The grille now features has a horizontal section at the bottom with the Quattro logo emblazoned across like all other recently revised RS models, flanked by new headlights (Matrix LED units for the European market). Inside the cabin the air-con vents and shift paddles have been reshaped, and the new MMI system ports over from the new A7 and S7 with 4G LTE connectivity and a Bang & Olufsen sound system.

Next Audi A7 redesign will include more traditional rear end

A report in Automobile says that Audi is rethinking the design of the next A7. Audi told Car and Driver that owners "have trouble with the radical tail of the A7," so its model-defining rear end will give way to something more traditional. Automobile is light on specifics of the redesign, but the general direction is "a lower, wider, and more expressive shape." The philosophy behind the dimensions and styling is a "C/D shift," meaning Audi wants to give its C-segment hatchback the bearing, gravitas, and visual delight of a D-segment vehicle. That would help the A7 stand out from its in-house competition, and could make for higher transaction prices. Having heard about different design directions from Audi for years without much in the showroom to back it up, we could define what we'd love to see in two words: more Prologue. This is Audi, so you know the next A7 will be packed with tech. We expect an emphasis on touchscreen interfaces, a digital dash cluster a la the TT that moves with the steering column, a HUD with night vision, and an MMI system a few more steps down the evolutionary trail. Engines will see some upgrades like the addition of a plug-in hybrid, the excellent 2.0-liter, turbocharged four-cylinder getting a 74-horsepower e-boost assist to 326 horsepower, the 3.0-liter V6 slated for the S7 rising to 500 hp, and the 4.0-liter V8 in the RS7 pumping out 575 hp.