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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.

Which would you rather have, Audi's RS5 or Mercedes' C63 AMG 507?

If you're in the market for a German sports coupe with a naturally aspirated V8, run, don't walk, to your nearest dealer because they are going to be gone very soon. European fuel economy and emissions rules have conspired to force automakers into seeking forced-induction mills. Motor Trend personality Jonny Lieberman is hosting the retirement party in the latest Head 2 Head video, where he takes on the 2014 Audi RS5 and 2014 Mercedes-Benz C63 AMG Edition 507 to decide which is the ultimate Teutonic V8.
To make the decision harder, Lieberman challenges the duo on the first soaking wet roads that Southern California has seen in ages. It forces the coupes to confront some of the actual weather that the rest of the country encounters regularly and serves to even the playing field somewhat between the charismatic rear-drive Mercedes-Benz and the all-wheel drive Audi.
It really is the end of an era for these coupes. The next Audi RS4 is rumored to switch to a twin-turbo V6, and while Mercedes won't officially admit it, the next C-Class AMG will likely switch to a 4.0-liter twin-turbo V8. And we already know the next BMW M3/M4 will rely on a 425-horsepower, 3.0-liter inline-six. Let's enjoy these eight-cylinder German giants while we can, and scroll down to watch the video.

The 2018 Audi RS3 sedan priced above the BMW M2 and Mercedes CLA45 AMG

Today, Audi finally released pricing for the 2018 RS3 sedan and it's not quite the performance bargain you may have been hoping for. The RS3 sedan, available for the first time in the US, will start at $55,875 when it hits dealer lots later this year. That's thousands more than the competition from BMW and Mercedes-Benz, though it's not quite a straight one-to-one comparison. View 23 Photos For reference, a BMW M2 starts at $53,495 while a Mercedes-Benz CLA45 AMG will set you back at least $50,875. With an all-new 400 horsepower inline-5 under the hood, the RS3 is packing more punch than its German rivals, and, unlike the M2, sends power to all four wheels. Standard features include LED lighting, Audi pre sense basic, and blind-spot monitoring. Other standard equipment hasn't been announced yet, so it's difficult to make a straight comparison to the M2 and CLA45 AMG. The RS3 sedan will make its North American debut next week in New York. While the car will hit full production for the 2018 model year, there will be a limited number of 2017 RS3s produced. At $55,450, the 2017 model is slightly less expensive than the 2018 RS3. That small batch will be preconfigured with carbon trim, Audi virtual cockpit with MMI Navigation plus, a Bang & Olufsen sound system, 19-inch, five-arm-blade design wheels, red brake calipers, and the RS sport exhaust system with black tips. Sounds like a good deal if you've already got your heart set on the latest from Audi Sport. Related Video: