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Audi unveils A3 Sportback G-Tron with bi-fuel power, 808-mile range

By this time next year, the Audi A3 Sportback will be offered with a variety fuel-efficient powertrains ranging from diesel to the all-electric E-Tron, but perhaps the most interesting is the all-new G-Tron model, which uses Audi's innovative carbon-natural compressed natural gas called e-gas. Previously called A3 TCNG, we first heard about this technology last year, but now Audi has confirmed that this low-emission, sustainable-fuel will debut by the end of this year on the A3 Sportback G-Tron.
To create this e-gas, a plant in Werlte, Germany uses electricity to split water into hydrogen and oxygen. As hydrogen fuel cell vehicles become more popular, Audi says that this process could also be used to produce hydrogen fuel, but to create CNG, it mixes the hydrogen with carbon dioxide to create "synthetic methane." Since it is identical to the CNG available today, Audi's e-gas can be shipped and stored using the existing CNG infrastructure. Making the whole process even greener, Audi obtains the CO2 for this process from a nearby biogas plant, which would otherwise be released into the atmosphere.
Differentiated from the regular versions of the A3, the G-Tron features a pair of tanks under the rear cargo floor holding 15.43 pounds of CNG, which can power the car for almost 250 miles. What's more, the A3's conventional gasoline tank is still in place, giving the car an addition 560 miles of range. In total, that means the A3 G-Tron has a driving range of more than 800 miles. To run on both CNG and gas, Audi made changes to the car's 1.4-liter four-cylinder engine (including the turbo, cylinder head and fuel injection system) and catalytic converter.

Get a load of Audi's TTs [w/videos + poll]

The third-generation Audi TT coupe has made its debut here at the Geneva Motor Show, showing an evolutionary design for the German automaker's fashion-forward coupe. As expected, the new TT takes plenty of inspiration from the Sport Quattro Concept that debuted in Frankfurt last year, and it draws upon cues from the model's past two generations.
After seeing it in person, the Autoblog crew on-site in Geneva is sort of torn about the new model. It's crisp and well-proportioned, but in terms of its exterior design, it also doesn't come off like a significant generational leap forward - the aesthetic distance between the original TT and the second-generation model was quite a bit larger. Of course, it's hard to reimagine a design icon, and either way we'll have to wait until we see the car on the road to make final judgments.
Audi is offering a trio of engines for the new TT, including a 2.0-liter turbodiesel powerplant that's good for 184 horsepower, 280 pound-feet of torque and an excellent 56 miles per gallon. On the gasoline front, Audi is offering two versions of its well-liked 2.0-liter TSI turbo-four. The less-powerful spec still offers up a healthy 230 hp and 272 lb-ft of torque, while the higher-output 2.0T sends 310 hp and 280 lb-ft of twist to all four wheels in the TTS coupe. Potent stuff.

TRANSLOGIC 148: Audi A3 Sportback E-Tron

We get an early drive of Audi's first plug-in vehicle for the U.S. market, the A3 Sportback E-Tron PHEV. Part of Audi's all-new A3 lineup, the Sportback E-Tron boasts an estimated electric driving range of about 30 miles at speeds up to 80 miles per hour. Find out what the future holds for Audi and their E-Tron vehicles.