• S3 Saloon
    S3 Saloon

    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.

  • S4 Saloon
    S4 Saloon

    Less really is more. Less consumption but more power. Less weight but more technology. Less driving machine and more driving legend. The S4 rewrites the rules when it comes to sports sedans

  • A5 Sportback
    A5 Sportback

    The elegance of a coupé along with the versatility of an Avant. This vehicle breaks open classic categories while defining a new one: the Audi A5 Sportback.

  • S5 Coupé
    S5 Coupé

    The Audi S5 Coupés dynamic S-underbody carves the promise of its design into the road: A new form of coupé driving.

  • S5 Sportback
    S5 Sportback

    The Audi S5 Sportback: dynamic sportsmanship featuring a unique blend of elegance, visualized through various design-elements.

  • S6 Saloon
    S6 Saloon

    More intelligent power. An Athletic character and appropriately low fuel consumption: The Audi S6 Saloon.

  • RS 6 Avant
    RS 6 Avant

    There's a lot to the Audi RS 6 Avant: inspiring power, impressive attractiveness and intelligent Audi ultra lightweight engineering.

  • S8

    Luxurious sportiness and more intelligent power. The new head of the Audi S model family: The Audi S8.

  • 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.

  • TTS Roadster
    TTS Roadster

    Provide the Wind forehead: From the grille up to the diffuser radiates the TTS Roadster pure power. A new generation of innovative technologies convinces inside - including the Audi virtual cockpit. The design has been sharpened, the striking side lines represent character and timeless aesthetics. Experience the pure power of the TTS Roadster.

  • R8 Spyder
    R8 Spyder

    Limitless intensity: the new R8 Spyder V10 combines impressive performance, sporty elegance and the fascination of open-top driving.


TDI clean diesel

The Audi TDI clean diesel represents the optimum exhaust gas aftertreatment technology that is currently possible in series production.

The accustomed economy of the TDI® and the efficient minimising of emissions by the ultra low emission system result in an economical and clean-running powerplant.

Audi TDI clean diesel with a nitrogen oxide catalytic converter based on a selective catalytic reduction system offers a range of functions:

In and on the engine, an enhanced common rail injection system with an injection pressure of 2,000 bar, innovative combustion chamber pressure sensors that continuously deliver precise information on the combustion process, further optimised turbocharging and a high-performance exhaust gas recirculation system ensure highly efficient combustion.

Hot gases coming from the engine are first directed through the close-coupled oxidising catalytic converter. Here, hydrocarbons and carbon monoxide are converted into carbon dioxide and water. In the next step, the gases reach the diesel particulate filter. Here, the particles are removed from the gas flow and are collected in the filter structure. At regular intervals, the filter regenerates itself and the carbon particles are burnt off.

To reduce nitrogen oxide emissions to a minimum, the final stage takes place: after it leaves the particulate filter, a 32.5 per cent water-based urea solution (AdBlue®*) is injected into the gas flow. In the hot exhaust system, this is converted into ammonia and water.

The Audi TDI clean diesel system will be further optimised in the future and will consequently achieve an even greater reduction in nitrogen oxide emissions. This will however increase the consumption of AdBlue, and the AdBlue supply will have to be topped up once between service intervals.

It will not be possible to start the car if the reservoir is empty! For this reason, a warning will appear in the instrument panel 2,400 km beforehand, drawing attention to the limited range.

We recommend having the reservoir refilled at an Audi dealership. Alternatively, the customer can do this using a Kruse bottle. The reservoirs are filled via a filler pipe, directly next to the diesel filler cap.
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Discover the Land of quattro and experience the unique technology in the online special.