42+ 2008 Audi A4 Avant Quattro S Line Specs Select a version to view full specs: Used 2008 audi a4 features & specs | edmunds. 2008 Audi A4 3.2 Avant 4dr All-wheel Drive quattro Station ... from o.aolcdn.com The s line exterior package is now standard, including revised bumpers, grille and integrated trunklid spoiler. Find specifications for every 2008 audi a4: Get detailed information on the 2008 audi a4 including features, fuel economy, pricing, engine, transmission, and more.