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Audi spotted running R8 E-Tron at the 'Ring

An electric version of the original Audi R8 may never have come to fruition – at least not in a form you could actually buy. But with the introduction of the all-new, second-generation model, Audi is getting serious about the prospect of producing the R8 E-Tron. And if you don't believe it, just look at these latest spy shots. Spotted testing at no less punishing a location than the Nurburgring is the upcoming new 2016 Audi R8 E-Tron. It looks just like the one we saw in Geneva earlier this year, painted in that same shade of electric blue, which we think suits the car rather well. It even has that orange strip of lighting around the side intakes, which drives the point of its electrification home in a rather stylish way, too. This prototype is wearing different wheels, and looks like it has some testing equipment mounted inside. Otherwise, this is pretty much what we can expect to see when Audi begins selling its electric supercar. We're sure there are more than a few eagerly awaiting customers who want to get their hands on an EV different from the Teslas or Nissan Leafs every other tree-hugger in the neighborhood has plugged in to their garages. To that end, expect the order books to open sometime later this year or maybe early into the next. Then the dream of an electric coupe with 456 horsepower and 679 pound-feet of torque, good for a 0-60 time in the three-second range and capable of tackling the Nordschleife, will finally become a reality. In the meantime, you can check out a piece of the action in the image gallery above. Related Video: Featured Gallery 2016 Audi R8 E-Tron: Spy Shots View 9 Photos Image Credit: CarPix Green Spy Photos Audi Coupe Electric Performance

Audi says new 48 volt micro-hybrid system improves fuel economy, paves way for electrification

Most cars use a 12-volt system to power their electrical components. But, with more and more electric bits and bobs being added to new vehicles, a dozen volts is looking a bit weak these days. In fact, Audi says that standard 12-volt systems are being stretched "to their very limits." Enter 48 volts. If used in a car that gets 40 mpg, that would translate to around 43.5 mpg. Audi is testing a supplemental 48-volt electric system in two prototype vehicles – modified mild-hybrid versions of the A6 TDI and the RS 5 TDI – in order to add in more electric technology (an electric compressor, for example, to improve acceleration) and "convenience systems for dynamic chassis control." Audi says it has more applications in the pipeline, but the overall gist is that the German automaker sees 48 volts as an "important building block in electrification strategy." As you can see in the picture above (click to enlarge), the RS 5 TDI concept uses a li-ion battery installed in the back of the car and an alternator to provide 48 volts when the engine is off. Audi says that the 48-volt system can save up to 0.4 liters of fuel per 100 kilometers. To put that into US numbers, if used in a car that gets 40 miles per gallon today, that would translate into a bump up to around 43.5 mpg. The Advanced Lead Acid Battery Consortium (ALABC) is also working on a 48-volt system to improve fuel economy and we've got a deep dive of Audi's electric turbocharger here. Even more powerful and efficient – the new 48-volt technology from Audi Important building block in electrification strategy More voltage and more power for new technologies Scalable platform concept suitable for wide-ranging uses Ingolstadt, August 25, 2014 – Audi is to upgrade part of its vehicle electrical system from twelve to 48 volts. The move represents another technical building block for facilitating the integration of new automotive technologies while increasing the power and efficiency of its cars. "We are using the full bandwidth of electrification in our drive principles strategy. Running part of the vehicle electrical system at 48 volts plays a central role in this," commented Prof. Dr. Ulrich Hackenberg, Member of the Board of Management for Technical Development at Audi. "It enables us to make more energy available.

Audi prices 2014 A8L TDI from $82,500*

During the Los Angeles Auto Show last November, Audi told us that it would be bringing four new diesel-powered models to the United States this year. The first to arrive is the 2014 A8L TDI you see here, and we've now learned that the big oil-sipper will be priced from $82,500, (*excluding $895 for destination).
The whole new range of diesel models will be powered by Audi's 3.0-liter TDI V6, good for 240 horsepower and 406 pound-feet of torque in this application. Of course, Quattro all-wheel drive is standard, and even in the big A8, the diesel grunt will be enough to propel the long-wheelbase flagship to 60 miles per hour in 6.4 seconds (almost a full second slower than the A8 3.0T we reviewed last fall). That said, the A8 TDI should still be a pretty engaging steer, and considering the fact that this thing will reportedly return fuel economy figures of up to 36 miles per gallon on the highway (24 in the city), a slightly slower launch time is well worth it. (The A8 3.0T tops out at 28 mpg highway.)
Elsewhere in the segment, Mercedes-Benz offers a diesel version of its S-Class flagship, retailing for $93,000 and good for fuel economy figures of 21/31 mpg city/highway. By comparison, the A8 TDI seems like a steal, and we'll be interested to see where the forthcoming BMW 7 Series diesel falls into the class of huge oil-burning barges.