The Audi A3 Sportback g-tron* stands for sustainable mobility of the future: The five-door premium compact model can use climate-friendly Audi e-gas as an alternative to fossil natural gas. The two tanks located under the luggage compartment floor each store around 7 kilograms (15.4 lb) of gas at a maximum pressure of 200 bar. They reduce luggage space only marginally and are constructed from a composite material, making them very light.
Equipped with a 1.4 TFSI engine producing 81 kW (110 hp), the Audi A3 Sportback g-tron sets standards for efficiency and economy. Fuel costs to the customer are roughly four euros per 100 kilometers (62.1 mi). Thanks to the four-cylinder engine’s configuration for bivalent fuels, its range is over 400 km (248.5 mi) in the NEDC cycle with natural gas fuel. When powered by gasoline, the driving range is extended by an additional 900 km (559.2 mi). Switching from one operating mode to the other happens automatically without the driver having to intervene. The instrument cluster separately displays the residual ranges in both modes.
The Audi A3 Sportback g-tron is equipped with a six-speed manual transmission or a seven-speed S tronic off the production line. With S tronic it consumes only 3.3 kilograms (7.3 lb) of natural gas or Audi e-gas per 100 kilometers (62.1 mi) in the NEDC cycle, corresponding to an emission of 89 grams of CO2 per kilometer (143.2 g/mi). The Audi A3 Sportback g-tron costs 26,950 euros in Germany.
The A3 Sportback g-tron is especially eco-friendly when running on Audi e-gas. Audi is presenting a very sustainable offer here until May 31, 2018: The automaker is offering customers climate-friendly Audi e-gas to power the A3 Sportback g-tron* – the fuel offer is included as standard for three years and customers will pay only the regular natural gas price. With this deal, Audi is reducing the CO2 emissions of the g-tron fleet when running on gas by 80 percent**. The green fuel Audi e-gas is what makes this reduction possible for the g-tron models. This fuel is produced using renewable energy from water and CO2 or from organic residual materials like straw and plant clippings. During its production, Audi e-gas thus binds exactly the amount of CO2 as is emitted by the car.
Among other things, the brand produces e-gas in its own power-to-gas plant in Werlte, located in Lower Saxony. The process: Three electrolyzers powered primarily by surplus green electricity split water into oxygen and hydrogen. In the subsequent methanation process, the hydrogen reacts with CO₂. The result: Synthetic methane – Audi e-gas – is created. This is fed into the European gas grid and compensates for the volume of natural gas used by the g-tron model in the New European Driving Cycle (NEDC).
Customers can fill up their g-tron model at any CNG filling station and pay the regular price. By feeding the computed volume of Audi e-gas into the natural gas grid, Audi works behind the scenes to ensure the green benefits of the program, including the corresponding reduction in CO2 emissions. A fuel card is no longer used as the accounting tool. Instead, Audi computes the volume automatically based on surveys and service data from the cars. TÜV Süd, a German testing and certification corporation, monitors and certifies the process. Audi g-tron customers receive a document that confirms their car will be supplied with Audi e-gas and informs them about the certification.
The equipment, data and prices specified in this document refer to the model range offered in Germany. Subject to change without notice; errors and omissions excepted.