*The collective fuel consumption of all models named above and available on the German market can be found in the list provided at the end of this MediaInfo.

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Power from gas: The new Audi A4 Avant g-tron

Alternative gas drive system in the new Audi A4 Avant

Bi-fuel 2.0 TFSI engine with innovative combustion process

Audi e-gas provides for CO2-neutral mobility

Ingolstadt, October 9, 2015 – Sporty, versatile and completely CO2-neutral, if

desired: Scheduled to launch in late 2016, the A4 Avant g-tron* is yet

another offer from Audi for the sustainable mobility of the future. It follows

the A3 Sportback g-tron* as the brand’s second model to use natural gas or

climate-friendly Audi e-gas.

The A4 Avant g-tron is simultaneously sporty, efficient and extremely

economical. The engine is based on the new 2.0 TFSI featuring an advanced,

highly efficient combustion process developed by Audi. The turbocharged power

plant produces 125 kW (170 hp). Maximum torque of 270 Nm (199.1 lb-ft) is

available at approx. 1,650 rpm. The pistons and valves have been specially

modified for gas operation and allow for an optimal compression ratio. An

electronic controller reduces the high pressure of the gas flowing from the tank

from as much as 200 bar to a working pressure of 5 to 10 bar in the engine. This

pressure control function is performed dynamically and precisely in response to

the power requested by the driver. The correct pressure is always present in the

gas line and at the injector valves – low pressure for efficient driving in the

lower speed range, and higher pressure for more power and torque.

In the NEDC, the Audi A4 Avant g-tron consumes less than four kilograms CNG

(compressed natural gas) per 100 kilometers (8.8 lb), corresponding to

customer fuel costs of roughly four euros (as of: October 2015). CO2 emissions

are less than 100 grams per km (160.9 g/mile). The tank capacity of 19

kilograms (41.9 lb) of gas allows for a range of over 500 kilometers (310.7 mi).

When the amount of gas remaining drops below approx. 0.6 kilograms (1.3 lb)

– analogous to a residual pressure of 10 bar – the control unit switches to

gasoline operation. The bi-fuel A4 Avant g-tron can cover an additional

Product and Technology Communications Sascha Höpfner Tel: +49 841 89-42753 E-mail: sascha.hoepfner@audi.de www.audi-mediacenter.com

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450 kilometers (279.6 mi) in this mode. The potential overall range is

comparable to that of a car with a TDI engine.

The filler necks for gas and gasoline are located under a common tank flap.

After refueling, and whenever it is very cold, the engine is started with gasoline

initially, then switched over to natural gas operation as quickly as possible. Two

displays in the instrument cluster keep the driver up-to-date on the fill levels of

the tanks. The driver information system shows the fuel consumption in the

active operating mode.

Audi installs the four cylindrical CNG tanks as a compact module in the rear end

of the Avant. They are optimized for the available space, and each is specifically

sized. Sheet steel shells with tensioning straps hold the cylinders and protect

them against damage, such as curbs. The complete CNG tank module, which

also includes the 25 liter (6.6 US gal) gasoline tank, is fitted to the body during

production of the A4 Avant. The spare wheel well in the body is eliminated. The

battery also moves from the luggage compartment to the engine compartment.

The loading floor is even with the loading lip, thus offering a full-fledged

luggage compartment.

The CNG tanks with an operating pressure of 200 bar at 15 degrees Celsius

follow the Audi lightweight construction philosophy. Thanks to their innovative

layout, they weigh 56 percent less than comparable steel cylinders. Their inner

layer is a gas-tight matrix of polyamide. The second layer, a composite winding

of carbon fiber-reinforced polymer (CFRP) and glass fiber-reinforced polymer

(GFRP), provides for maximum strength. The third layer is pure GFRP and serves

primarily as a visual inspection aid, turning milky white where damaged. Before

being installed in a car, each tank is tested at 300 bar during production. The

actual bursting pressure is much higher still and far exceeds the legal

requirements.

With Audi e-gas, the A4 Avant g-tron is CO2-neutral in operation. e-gas is a

synthetic methane produced from water and CO2 with the help of green

electricity in multiple power-to-gas plants. Audi operates the world’s first

industrial-scale power-to-gas plant in Werlte, but now also procures e-gas from

other facilities. With power-to-gas technology, the brand with the four rings is

making it possible to store excess renewable energy – a valuable contribution to

the energy transition. The company and its partners are intensively driving the

development of various synthetic fuels known as Audi e-fuels, including by

means of new biological production processes.

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The driver can buy fuel using the Audi e-gas refueling card familiar from the

Audi A3 Sportback g-tron, which serves as both a payment and balancing

instrument. Based on the information transferred during payment, Audi feeds

e-gas corresponding to the amount of gas purchased by the customer back into

the natural gas network. In this way Audi achieves completely CO2-neutral

mobility.

– End –

Fuel consumption of the models named above:

Audi A4 Avant g-tron:

This vehicle is not yet on sale. It does not yet have type approval and is therefore not

subject to Directive 1999/94/EC.

Audi A3 Sportback g-tron:

CNG consumption in kg/100 km: 3.6 – 3.3 (7.9 - 7.3 lb)**;

Combined fuel consumption in l/100 km: 5.5 – 5.1** (42.8 – 46.1 US mpg);

Combined CO2 emissions in g/km (CNG): 98 – 89** (157.7 – 143.2 g/mi);

Combined CO2 emissions in g/km: 128 – 117** (206.0 – 188.3 g/mi)

** Fuel consumption, CO2 emission figures and efficiency classes given in ranges

depend on the tire/wheel sets used.

In 2014, the Audi Group delivered approximately 1,741,100 cars of the Audi brand to its customers. The company achieved revenue of €53.8 billion and an operating profit of €5.15 billion in 2014. Audi operates globally in more than 100 markets and has production facilities in Ingolstadt and Neckarsulm (Germany), Győr (Hungary), Brussels (Belgium), Bratislava (Slovakia), Martorell (Spain), Kaluga (Russia), Aurangabad (India), Changchun and Foshan (China) as well as Jakarta (Indonesia). The brand with the Four Rings will start producing cars in Curitiba (Brazil) this year and in San José Chiapa (Mexico) in 2016. Wholly owned subsidiaries of AUDI AG include quattro GmbH (Neckarsulm), Automobili Lamborghini S.p.A. (Sant’Agata Bolognese, Italy) and sports motorcycle manufacturer Ducati Motor Holding S.p.A. (Bologna, Italy). The company currently employs approximately 80,000 people worldwide, thereof around 58,000 in Germany. Total investment of about €24 billion is planned from 2015 to 2019 – primarily in new products and sustainable technologies. Audi is committed to its corporate responsibility and has anchored the principle of sustainability for its products and processes in its strategy. The long term goal is CO2 neutral mobility.