Between 2004 and 2008, the `S4 Cabriolet B7` carries over Audi's `V8` convertible formula in a more mature and more desirable form than the first B6. Against a Porsche 911, it remains more GT than pure sports car, but makes up for it with its soundtrack, torque and genuine ability to travel quickly with four seats. On the used market it is often the most logical phase to target, provided you do not buy only the noise or the rarity.
The central subject remains the `344 hp 4.2 V8 BBK`, with a `6-speed` manual or `tiptronic`. As on the B6, you have to read the rear chain setup, cold starts, oil use, cooling, ignition and ageing auxiliaries carefully. On the B7 cabriolet, the roof, sealing, body rigidity, window alignment, drains and boot condition also matter heavily. A leisure car that barely moved can hide more cost than an example that was used regularly and maintained properly.