2007 Audi A4 2.0t Premium Package Leather Heated Seats Walnut Wood Low Miles!!! on 2040-cars

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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.

2017 Audi S4 goes running naked through the Alps

Audi just launched its new A4 sedan barely more than two months ago, bringing with it a raft of improvements over the outgoing model. And you know what that means: A new S4 performance model is just around the corner. Fortunately, that's just what we have here in these latest spy shots, snapped completely undisguised. Spotted testing in the Alps, the new Audi S4 is closely based on the new A4 we've already seen, benefiting from all its enhancements and weight savings. Only it promises to be more potent. Where previous S4s packed V8 engines and the current (outgoing) model pressed a supercharged V6 into service, this new model is tipped to switch to a fresh turbocharged V6. Expect power to rise from 329 horsepower up to 340 or more, and with less weight to motivate, we can expect performance to improve markedly in the process. Along with a more powerful engine, the S4 clearly stands out visually from ordinary A4s with bigger intakes, upgraded rolling stock, quadruple exhausts, and more. We'll have to wait a little longer to find out all the sordid details, but from the look of it, we won't have to wait long. In fact, we'd be surprised if Ingolstadt didn't take the opportunity to unveil it at the Frankfurt Motor Show this month, so watch this space for more and scope out the photos in the gallery above in the meantime.

Audi RS3 Sportback is the hottest hatch

Fans of compact, European vehicles that mix luxury and performance should be in paradise right now. There's already the 320-horsepower M235i from BMW and the 355-hp CLA45 AMG (or A45 elsewhere) from Mercedes-Benz, but you can now add one more to the list. Meet the Audi RS3 Sportback, which boasts 362 hp and five doors, too. With propulsion coming from Audi's turbocharged 2.5-liter five-cylinder that makes 343 pound-feet of torque (465 newton-meters), the RS3 Sportback can scramble to 62 miles per hour in 4.3 seconds. Top speed is limited to 155 mph, but buyers can opt to raise that top end to 174 if desired. The inline-five is mated to a seven-speed S-tronic dual-clutch gearbox, sending power to the ground via Quattro all-wheel drive with torque vectoring, which can send between 50 and 100 percent of the power to the rear wheels as needed. To cope with the boosted output, the suspension has been lowered by an inch compared to the standard A3 Sportback, and magnetic dampers are a further option. Buyers can also tick the box for carbon-fiber-ceramic brake rotors at the front. The RS3 goes on a diet its latest iteration, too, weighing 121 pounds less than its predecessor. While buyers get potent power, Audi keeps the looks understated. The exterior wears a front airdam with larger openings and some aluminum flourishes, and a diffuser at the back gets some more matte trim. A roof spoiler and aluminum look for the mirror housings add a few other touches to catch the eye. Inside, all versions get sport seats covered in Nappa leather and a flat-bottom steering wheel wrapped in leather and Alcantara. But for the really sporty look, buyers can spec optional RS buckets with a carbon shell that weigh 15 pounds less than the standard units. European deliveries of the RS3 Sportback begin in the summer. Autoblog reached out to Audi spokesperson Mark Dahncke who told us there are currently "no plans to bring it to the US." Scroll down to read Audi's full announcement of this five-door hot hatch. Power in compact form – the new Audi RS 3 Sportback Ingolstadt, 2014-12-12 Sporty top model of the A3 model series Most powerful production five-cylinder in RS history with 270 kW (367 hp) 0 – 100 km/h (62.1 mph) in 4.3 seconds – 0.3 seconds faster than the previous model Hot, throaty sound, exhilaratingly free-revving and brawny power – the five cylinder engines from Audi are legendary.