Audi A4 B9 – Wikipedia

File:2018 Audi A4 Avant S Line TDi S-A 2.0 Rear.jpg - Wikipedia

Audi A4 - Wikipedia

Audi A4 - Wikipedia

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List of Volkswagen Group petrol engines - Wikipedia

Audi A4 - Wikipedia

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2012 Atruse A4, CDID Wiki

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Audi A4 Sedan Generations: All Model Years