2013 Audi S4 Premium Plus, 6 Speed, Metallic Gray on 2040-cars

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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.

Race Recap: 2013 Twelve Hours of Sebring, cakewalk up front, grindfest out back [w/spoilers]

This year's 12 Hours of Sebring wasn't exactly a foregone conclusion because we're still talking about racing, and anything can happen when the speeds are as high as the adrenaline and the desire. But we're still talking about Audi bringing it's two top-spec racers - and its huge budget and its nearly neurotic attention to detail - to a race that it uses as a test bed for The 24 Hours of Le Mans and as a way to open the endurance racing season with a victory.
Besides, 12 hours is a long time, especially at Sebring, and things didn't go all Audi's way. On top of that, although it was a pretty quiet race, behind the Audis things got even grimier, with plenty of battles, plenty of mechanical issues, and the new BMW Z4 GTE and Viper GTS-R being race tested. Oh, and that brand new chromed-out DeltaWing...

Audi plans RS3 for US

Rejoice, performance-car fans. The Audi RS3 (pictured above) is probably coming across the Atlantic. If that happens, the US-market RS3 will likely be a sedan, not the five-door body style offered in Europe. Hot hatch fans might shed a tear at this news, but we'll the RS3 any way we can get it. Audi of America CEO Scott Keogh feels the same way. "We really, really want the RS3," he said to Automotive News. "I'm very confident we'll see that car in the market. That's as far as I'm going to go. In Europe, the RS3 Sportback packs a 2.5-liter turbocharged five-cylinder with 362 horsepower and 343 pound-feet of torque mated to a seven-speed dual-clutch gearbox. That grunt get to the ground via a torque-vectoring all-wheel drive system that can route up to 100 percent of the power to the rear wheels when necessary. The sprint to 62 miles per hour goes by in just 4.3 seconds. Of course, a tiny, hardcore sedan isn't on every buyer's shopping list. For those who want a little more room with their luxury, the Q8 is also on the way. "That is absolutely a car that we will see in the United States," Keogh said to Automotive News. The big crossover shares its platform with the next Q7, but will have sleeker bodywork similar to vehicles like the BMW X6 and Mercedes-Benz GLE Coupe. The Q8 is slated to launch in 2017 with US sales following the European debut. Recent rumors suggest that a fully electric E-Tron version could be part of the lineup as well. Audi's American arm isn't as crossover crazy as some other automakers, however. According to Keogh, the tiny Q1 CUV might not come to the US because it's not the right fit for the market. Related Video: