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2007 Audi S4 Avant auction - Cars & Bids
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2004 Audi S4 6-Speed for sale on BaT Auctions - closed on September 17, 2019 (Lot #22,985)
2006 Audi S4 Review & Ratings
Which used Audi models should I avoid while buying a used Audi? I want a B7 A4 Quattro Avant 3.0 TDI. Is that a reliable car? - Quora
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2006 Audi S4 Review & Ratings
The B6 A4 is the Audi that Time Forgot, but Why? – ECS Tuning
2006 Audi S4 Review & Ratings
The B6 A4 is the Audi that Time Forgot, but Why? – ECS Tuning
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Audi A4 Sport B6 - Wheel Ideas?