
Since the beginning, the Audi A4 has been available in four generations, according to B 'series Volkswagen Group' car platform. internal numbering convention Audi A4 therefore treated as a logical continuation of the lineage of the Audi 80, then designated as a series early A4-B5, B6 and next followed by B7, and B8 today.
From the style of the main body, it (and has always) is available as a saloon / sedan variant, and the "Avant", which is Audi's name for estate / wagon. The second generation (B6) and third (B7) A4 also has a version of the car, but the car was not retained for the current fourth-generation (B8), Audi now has a version of the Audi A5 coupe car related and S5 - and also the smaller the Audi A3 .
In addition, higher performance version of direct contact with A4 including the Audi S4, and the limited availability of quattro GmbH, developed a very high-performance Audi RS4.
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