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  • A3 Sportback
    A3 Sportback

    The Audi A3 Sportback. Five doors lead to its five greatest strengths: sportsmanship, driving dynamics, comfort, functionality and style.

  • A3 Sedan
    A3 Sedan

    Modern and distinctive – it’s Audi’s smartest innovation. The all-new Audi A3 Sedan has the power to change the way you drive.

  • S3 Sportback
    S3 Sportback

    The dynamic silhouette of the Audi S3 Sportback shows hints of what lies within: a serial quattro drive high performance engine.

  • S3 Sedan
    S3 Sedan

    Power that does not let you go. Brought onto the road with confidence by the standard quattro® permanent all-wheel drive. Thrilling performance. Unique look. Typical S.

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  • A4 Saloon
    A4 Saloon

    The ideal balance between performance and efficiency, sportsmanship and sovereignty, intelligence and emotion: The Audi A4.

  • A4 Avant
    A4 Avant

    Audi A4 Avant. Progressive, not conservative. Athletic, not inert. Comfortable, not cozy. Efficient, not humble. Avant, not station wagon.

  • RS 4 Avant
    RS 4 Avant

    Athletics and functionality on a line. The Audi RS 4 Avant.

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  • A7 Sportback
    A7 Sportback

    The A7 Sportback is the first in its class to unite the elegance of a Limousine, the functionality of an Avant and the dynamics of a Coupé.

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  • A8 L
    A8 L

    The Audi A8 L. Witness its powerful sovereignty. Led by luxury, complemented by performance, dynamics and efficiency. Throughout its full length.

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  • Q2
    Q2

    #untaggable. Defy conventions. Bold and muscular, yet compact and sleek. An urban character for everyday life.

  • SQ2
    SQ2

    Powerful and self-confident. The Audi SQ2.

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  • Q5
    Q5

    The SUV for a new generation. Convincing without being persuasive. Sportive without being unreasonable. Efficient driving pleasure.

  • SQ5
    SQ5

    The SUV for a new generation. Convincing without being persuasive. Sportive without being unreasonable. Efficient driving pleasure.

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  • Q7
    Q7

    Versatile top-class SUV. The Audi Q7.

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  • Q8
    Q8

    The new face of the Q family: the Audi Q8

  • RS Q8
    RS Q8

    Performance in a new dimension. The Audi RS Q8.

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  • TT Coupé
    TT Coupé

    The Audi TT Coupé. Pure emotion packaged in form and function. Pure consistency in quality and efficiency. Pure sportsmanship brought to the road.

  • TTS Coupé
    TTS Coupé

    The Audi TTS Coupé is bursting with sports car genes. Dynamic driving even controlled - by the new quattro permanent all-wheel drive. The design is individualized by S-specific elements and instantly recognizable. The innovative technologies in the drive, as well as new control and display concepts - including the Audi virtual cockpit - characterize the Coupé.

  • TT RS Coupé
    TT RS Coupé

    Ultimate sportiness. The Audi TT RS Coupé.

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g-tron
Audi | Hong Kong Official Website Technology g-tron

Power-to-gas plant

In June 2013, Audi opened the e-gas plant at Werlte in the Emsland region of Germany. This makes Audi the first automobile manufacturer to develop a chain of sustainable energy carriers. It starts with green electricity, water and carbon dioxide. Its end products are hydrogen and synthetic methane: Audi e-gas.

The e-gas plant operates in two process steps: electrolysis and methanisation. In the first step, the plant uses surplus green electricity to split water into oxygen and hydrogen in three electrolysers. The hydrogen could one day be used to power fuel cell cars. At present however, there not a widespread infrastructure. For this reason, the second process step follows immediately: methanisation. The hydrogen reacts with CO₂ to produce synthetic methane: Audi e-gas. It is practically identical to fossil natural gas and is distributed to CNG filling stations across Germany through an existing infrastructure, the German natural gas network. The plant began feeding Audi e-gas into the grid in autumn 2013.
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The Audi e-gas plant produces around 1,000 metric tons of e-gas per year, binding around 2,800 metric tons of CO₂. This roughly corresponds to the amount that a forest with more than 220,000 beech trees absorbs in one year. The only by-products are water and oxygen.

The Audi e-gas project goes far beyond the automotive industry. It shows how large quantities of green electricity can be stored efficiently and independently of location, by transforming it into methane and storing it in the natural gas network, the largest energy storage facility in Germany. With the e-gas project, Audi is a part of and a driver of the energy revolution. Meanwhile major German energy suppliers have picked up the idea of power-to-gas cogeneration and are following Audi with initial projects of their own.

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