The design specifications of the Audi A4, 2008 model will vary as there are twenty one different designs of this model. One can find the exact specifications on the CarBuyer website.
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Audi A8
The 2008 Audi S8 has 40 valves.
The 2008 Audi S4 has a V8 engine.
The 2008 Audi TT has 16 valves.
The 2008 Audi Q7 has a V6 engine.
The 2008 Audi A4 has 16 valves.
The 2008 Audi Q7 has 24 valves.
The 2008 Audi R8 has a V8 engine.
The 2008 Audi S6 has 40 valves.
The 2008 Audi A5 has a V6 engine.
The 2008 Audi R8 has 32 valves.