Audi A4 2.0 Avant Quattro Awd Wagon Premium Cold Package Xenon Heated No Reserve on 2040-cars

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Next-gen Audi Q7 shows off its wares ahead of Detroit

Audi has put the Q7 on a massive diet, trimming over 700 pounds. Meet what is sure to be one of the bigger debuts at the upcoming 2015 Detroit Auto Show. The next-generation Audi Q7 has been the subject of spy shots and conjecture for quite some time. After all, it was easily the oldest vehicle in the Audi range, having hit the market way back in 2006. But with this new model, Audi has comprehensively updated its fullsizer, adding some cutting-edge tech, updating some classic engines, and taking a whole lot out. As is the theme nowadays, particularly among large crossovers and SUVs, Audi has put the Q7 on a massive diet with a mix of ultra-high-strength, hot-shaped steel and aluminum, trimming over 700 pounds of body fat and lowering the Q7's weight to just under 4,400 pounds. This was accomplished while maintaining virtually identical dimensions to the current model. While Audi USA hasn't released its info on the Q7, the Euro-spec model will continue to offer a pair of engines that should be very familiar to US consumers, with a 3.0-liter, supercharged V6 gas engine and a 3.0-liter TDI V6. The European engines, though, have had their CO2 emissions halved, while actually increasing performance (we should expect similar from the US engines). The 3.0-liter TDI has been bumped up from 240 horsepower to 272 ponies, while torque is up from 406 pound-feet to 443. The 3.0-liter TDI has been bumped up from 240 horsepower to 272 ponies, while torque is up from 406 pound-feet to 443. This extra grunt has trimmed the 0-60 time from a leisurely 7.3 seconds down to 6.3, while the fuel economy has jumped up to 41.3 US miles per gallon, converted from the European cycle (so expect the EPA numbers to be a bit lower). The supercharged 3.0-liter, meanwhile, has been amped up to match the output of its application in the S4 sport sedan, jumping from 280 hp and 295 lb-ft to 333 ponies and 325 lb-ft. Once again, the 0-60 time falls dramatically thanks to the power bump and weight loss, dropping from 7.7 seconds to a far more zippy 6.1. The most exciting news is the long-rumored arrival of the Q7 E-Tron, a plug-in hybrid that's mated to a six-cylinder diesel engine and Quattro all-wheel drive. Audi claims this world-first production powertrain will return 138.4 US miles per gallon, emit less than 50 grams of CO2 per kilometer and allow the Q7 E-Tron to travel up to 35 miles on electric power alone.

Audi creates new diesel fuel from carbon dioxide and water

What if you could power cars of the future with pollution created by the cars of the past? That's what German automaker Audi is hoping to achieve by creating a new synthetic fuel using renewable energy to turn water and carbon dioxide gas into a new kind of fuel they call "e-diesel." The new diesel is being produced at Audi's pilot plant Sunfire in Dresden, Germany. Only a few gallons were created, which the German Federal Minister of Education and Research Johanna Wanka put into her Audi A8 to prove the fuel's bonafides. The base fuel is known as "blue crude" and begins from a green source. Audi uses electricity from wind, water or solar power sources to separate hydrogen from oxygen in water. The hydrogen is then mixed with carbon dioxide which has been converted in carbon oxide. The blue crude is then further refined to create the e-diesel. The carbon dioxide is currently supplied by a biogas facilities, but some of that CO2 was captured from the air. "The engine runs quieter and fewer pollutants are being created," says Sunfire CTO Christian von Olshausen. The fuel can be combined with conventional diesel fuel, as biodiesel fuels already and would be competitively priced against regular diesel, according to Gizmag. Sunfire can produce about 42 gallons of e-diesel a day. That seems like barely a drop in the bucket in terms of Europe's energy use, but Audi is ready to commercialize the technology with plans to expand production with a bigger facility in the future.

Audi Prologue Avant Concept points to the future of wagon design in Geneva [w/video]

The new generation Audi R8 and its LMS GT3 racing version are grabbing much of the attention at the Audi stand at the Geneva Motor Show. However, if you are more interested in seeing the brand's future design direction, just take a look at the Prologue Avant Concept that's also on display. Audi traditionally uses the Avant name for the company's wagons, but that's tweaked slightly here. The vehicle is certainly a five-door, but from some angles it looks more akin to a Porsche Panamera-like hatchback. Compared to the B-pillarless Prologue Coupe (that we recently drove), the stretched roof flows all the way to the angled rear hatch, and the result is a very elegant design. The interior tends towards minimalism with just a few screens showing the driving info. The Prologue Avant also ditches the Coupe's petrol-fueled hybrid for a 3.0-liter, twin-turbo diesel V6 plug-in hybrid with a total of 455 horsepower and 553 pound-feet of torque, which is linked to an eight-speed gearbox. Audi claims the setup reaches 62 miles per hour in 5.1 seconds and allows for 33 miles of pure electric driving. To get a sneak peek at what's next from Audi, take a look at the Prologue Avant Concept on the floor of the Geneva show in the gallery above.