2001 Audi A4 Avant Silver Wagon 2.8l 6cyl 5spd Manual on 2040-cars

Auto blog

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.

TT Offroad Concept shows Audi's design icon isn't afraid to play dirty

We'll step right out and say we like the TT Offroad Concept, but there's something that's just a bit too... familiar about it. Yes, this yellow five-door looks like a not-so-distant relative of the Allroad Shooting Brake Concept that debuted at the 2014 Detroit Auto Show earlier this year. So, we've seen the production TT, a super-light, high-performance model and now we're seeing a crossover. Does any of this sound familiar? Considering the Detroit concept earned an editors' choice award for that show, you can imagine how we feel about the strikingly similar TT Offroad, which is debuting at the Beijing Motor Show.
The two concepts share a propulsion system - a high-performance version of Audi's E-Tron plug-in-hybrid drivetrain. Total system output sits at 408 horsepower, thanks to a 2.0-liter, turbocharged four-cylinder and a 40-kilowatt electric motor in front and an 85-kW motor on the rear axle, for all-wheel drive. 62 miles per hour arrives in 5.2 seconds, while the TT Offroad is limited to 155 mph. Fuel economy is impressive, with a claimed 123.8 US miles per gallon on the European cycle.
The most obvious different between these two, then, are their looks. The TT looks a bit tougher, thanks to its larger 21-inch wheels and narrower headlights, but its more conventional belt and roofline give it more of an Audi Q3's look. Out back, a slightly restyled bumper is the sole differentiator between the two vehicles.

Audi 3D-printed this tiny Type C racer, we want to drive it

See this little guy? No, not the one driving – that's Professor Hubert Waltl, Audi's head of production and Volkswagen's chief toolmaker. The thing he's driving, though, is a 1:2 scale replica of the 1936 Auto Union Type C. And it was 3D-printed entirely in house. Not in one piece, mind you. It's too big for that. But the Audi Toolmaking division employed metal printing technology to fabricate all the parts that went into this replica of one of the most dominant of the Silver Arrow grand prix racers of the pre-war era. It's essentially like the pedal car Audi rolled out nine years ago, or the E-Tron concept it showed us nearly five years ago. Only this one uses more advanced manufacturing techniques. Aside from making us want to drive it like nobody's business, the half-sized vehicle serves to showcase the advancements which Audi and the VW Group are making in manufacturing – particularly in the area of 3D printing. The German automaker presently has the technology to print laser-melted layers of metallic powder – either steel or aluminum – with grains measuring half the diameter of a human hair. The equipment can handle objects as large as 7.9 inches high by 9.5 inches wide – which, as small as this little car looks, is still a bit too large to simply print out in one piece. Audi Toolmaking prints "Auto Union Typ C" - Exact model of the "Silver Arrow" from a 3D printer - Audi Board of Management Member for Production Prof. Dr. Hubert Waltl: "This underscores our pioneering role in toolmaking." From powder to a component: With a 3D printer, Audi Toolmaking has produced a model of the historical Grand Prix sports car "Auto Union Typ C" from the year 1936. The company is now examining further possible applications of metal printers for the production of complex components. At the same time, Audi is creating important synergies with toolmaking in other parts of the Volkswagen Group. "We are pushing forward with new manufacturing technologies at Audi Toolmaking and at the Volkswagen Group," stated Prof. Dr. Hubert Waltl, Audi's Board of Management Member for Production and Head of Toolmaking at the Volkswagen Group. "Together with partners in the area of research, we are constantly exploring the boundaries of new processes. One of our goals is to apply metal printers in series production." The Volkswagen Group has a total of 14 toolmaking units in nine countries. Under the leadership of Prof. Dr.