2001 Audi S4 Base Sedan 4-door 2.7l on 2040-cars

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Next Audi R8 to eschew engine downsizing, go on diet instead

Looking across the Audi landscape, many models that used to get the company's high-revving, naturally aspirated 4.2-liter V8 are now powered by smaller, yet similarly powerful, forced-induction engines. From what Auto Express is reporting, though, the next-generation Audi R8 will not meet this same fate.
Rather than ditching its V8 and V10 powerplants, the next-gen R8 - expected to debut in 2015 - will shed pounds from its curb weight. The 2014 R8 currently weighs between 3,583 pounds and up to 3,957 pounds, but the report says that engineers are targeting a weight of less than 3,300 pounds. All models will get cylinder deactivation, which along with lower curb weights should help to improve fuel economy and emissions. Head on over to Auto Express for more reported information as well as a handful of renderings that take a stab at how the next R8 may look.

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.

European RS6 Avant ad features diesel-hybrid R18 racecar

We'd be just as happy to casually walk back to an RS6 Avant as anybody, but Audi's commercial for its fastest ass-hauling wagon takes casual to another level. The RS6 isn't even seen until more than two-thirds of the way through the 46-second German commercial, but Audi seduces us long before that with the R18 E-tron Quattro diesel-hybrid endurance racer juxtaposed into scenes of everyday life. Since when can you be picked up at the airport or drive peacefully to a riverbed in a racecar?
The German automaker cashed in on childhood dreams its nearly flawless endurance-racing pedigree big time for the advertisement - and it works, even though we realize the RS6 drinks gasoline and isn't a hybrid. It does have Quattro four-wheel drive, however. But the commercial makes us want the beautifully pragmatic long-roof with 550 horsepower all the more, especially since Audi currently has no plans to bring it to the US. Please say it ain't so!
Even if the US doesn't get an RS6 Avant, we're happy to indulge in commercials like this. Be sure to watch it below.