2007 Audi A4 2.0t Quattro: Exceptionally Clean, Offered By Mercedes-benz Dealer 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.

Audi pits S3 against Ur-Quattro on gravel

If you had to pick a winner between the latest Audi S3 and the original Audi Sport Quattro, which would it be? Both hot hatches pack around 300 horsepower and all-wheel drive, but they're separated by a good thirty years of development.
To find out, Audi took both to the old rally circuit in San Remo. Behind the wheel of the Ur-Quattro they put none other than The Stig himself - no, not the Top Gear test bot, but Stig Blomqvist, the Swedish former rally driver who drove the Quattro to the World Rally Championship in the mid-80s. In the S3 they put someone named Hermann Müller, who as best we can tell was one of Auto Union's original Silver Arrow drivers - but he died in 1975, so it's probably the guy who writes for the Audi magazine. Regardless, the contest was pretty close, so it's worth checking out in the 2:26 video clip below.

2015 Audi A3

The five-door Audi A3 hatchback, on sale in the States since the 2006 model year, never earned the respect it deserved. Despite possessing the automaker's well-regarded build quality and a range of strong powerplants (including an excellent diesel option), the entry-level model always played second fiddle to the rest of the Audi lineup, suffering from less innovative technologies and fewer premium options on its list. Many buyers considered it inferior to the rest of the models in the company's showroom. But those misconceptions could be about to change, as Audi is in the midst of introducing its third-generation A3 family to the States with expectations that the range will finally align with the rest of its portfolio.
First to arrive is this new sedan, notable as it is the first time the A3 has been offered as a compact four door. The new bodystyle is positioned as a premium C-segment offering, with its most obvious competitor being the new Mercedes-Benz CLA-Class (BMW has not officially announced a 2 Series Gran Coupe, which would be the third entrant in the segment). The automaker says its "A3/S3 models will be among the most technically advanced Audi products around" and there will be "no sacrificing Audi craftsmanship and premium appointments." To put the automaker's claims to the test, we spent a week with this new sedan in Southern California.