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Audi S3 starts at $41,400, A3 Cabrio rings up at $35,600 and A3 TDI priced from $32,600

Audi has released the official pricing info for the all-new A3 TDI Sedan, A3 Cabriolet and the S3 Sedan, and the news appears pretty good all around. As usual, none of the following prices include Audi's unspecified-for-now destination charges.
The big news is the S3, complete with 292 horsepower, a six-speed dual-clutch transmission and Quattro all-wheel drive. Prices start at just $41,100, which is a decent savings over the more powerful, 355-hp Mercedes-Benz CLA45 AMG.
The new A3 TDI sedan, meanwhile, has a starting price of just $32,600. While you'll be certain to save some money on fuel, you'll be doing so without Quattro all-wheel drive. Still, the improved economy of the 2.0-liter, turbodiesel four-cylinder isn't priced too steeply, relative to the gas-powered A3's $29,900 starting price.

Recharge Wrap-up: Ferrock a carbon-negative cement substitute, Audi makes e-diesel

A cement alternative uses recycled materials and traps CO2 rather than producing it. Invented by David Stone at the University of Arizona, Ferrock uses recycled steel dust and glass to produce a substance stronger than conventional concrete. Cement has a high carbon footprint from the high heat needed to process the limestone. Ferrock needs no such heat, and it actually uses CO2 to harden, making it, as Stone calls it, a carbon-negative material. Learn more in the video above, see the transcript at PBS NewsHour and read more at Green Car Reports. Teslarati offers a detailed rundown of Tesla's new Valet Mode feature for the Model S. Part of the Firmware 6.2 update, Valet Mode allows the owner to disable certain performance features and block personal information when letting someone else drive the car. It limits the car's to speed to 70 miles per hour, and caps output at 80 kW. It can also disable mobile app access, Homelink, Bluetooth and wifi and the "Places" function, which stores addresses for you. The folks at Teslarati did find some shortcomings in the new feature, though. Read more at Teslarati. Audi has produced its first batch of e-diesel made from water and CO2. The fuel is made by reacting hydrogen from the water with CO2 to make long-chain hydrocarbon compounds called "blue crude." That can then be refined similarly to crude oil to make e-diesel, which is a fuel free from sulfur and aromatic hydrocarbons. That e-diesel can be used on its own, or mixed with fossil fuel diesel to power a vehicle. "In developing Audi e-diesel we are promoting another fuel based on CO2 that will allow long-distance mobility with virtually no impact on the climate," says Audi Head of Sustainable Product Development Reiner Mangold. Read more in the press release below. Fuel of the future: Research facility in Dresden produces first batch of Audi e-diesel - The verdict: Pilot plant produces high-quality diesel fuel - No need for mineral oil: e-diesel made from water, CO2 and green power - Minister Wanka: "Synthetic diesel using CO2 is a huge success" Audi has taken another big step in the development of new, CO2 neutral fuels: A pilot plant in Dresden has started production of the synthetic fuel Audi e diesel. After a commissioning phase of just four months, the research facility in Dresden started producing its first batches of high-quality diesel fuel a few days ago. To demonstrate its suitability for everyday use, Federal Minister of Education and Research Prof.

Audi races ahead with new R8 LMS [w/video]

The biggest news from Audi at the Geneva Motor Show may very well be the reveal of the all-new, second-generation R8 supercar. But the road-going version isn't the only one it's rolling out at the Swiss expo, where it's joined by the new competition-spec R8 LMS. Set to hit race tracks around the world next season, the new Audi R8 LMS picks up where the current one leaves off, having taken 26 GT3 Championship victories and seven 24-hour race wins between 2009 and 2014. That's a heck of a mantle to assume, but the new model looks like it'll be up to the task. Based on the new road-going R8, the new LMS is built to 2016 GT3 regulations and in many ways even exceeds them. In fact, Audi says it meets the more stringent crash requirements for the LMP1 class, and includes its state-of-the-art Audi Protection Seat PS 1 from the R18 E-Tron Quattro. It also incorporates the emergency hatch Audi built in to its DTM racers. Of course, there's more to the new R8 LMS than safety. Despite the addition of those features, the whole package is a good 55 pounds lighter than the outgoing model, thanks to the lightweight spaceframe chassis and the increased use of carbon-fiber components – all the while offering more torsional rigidity. Power still comes from Audi's celebrated 5.2-liter V10 engine producing 585 horsepower, but is now mated to a new six-speed sequential gearbox and benefits from an entirely new electrical system, improved airflow and optimized aerodynamics. All that and more ought to help the new R8 LMS and its customer racing teams achieve the success they're after once it makes its competitive debut at the Nurburgring 24-hour race in mid-May 2016. Related Video: AUDI R8 LMS ESTABLISHES NEW RACE CAR GENERATION: LIGHTER AND SAFER THAN EVER BEFORE Ingolstadt, March 3, 2015 – Audi is again running in front. As one of the first automobile manufacturers to do so at the beginning of the 2015 season, the brand with the four rings is presenting a race car that already meets the requirements of the new GT3 regulations to be introduced in 2016. The new Audi R8 LMS is lighter and safer than ever before. It features even more race car technology, clearly improved aerodynamics and, as a result, provides customers with an efficient concept. Back in spring of 2014, Audi began testing the new R8 LMS that is following in big footsteps.