Audi S4 - 4.2 Reliability

[5LitreV8]

Hi All.

Thinking about buying an S4. However, a coupe of questions:

1. How reliable is the engine? Have there been many reported faults?
2. How long is an Audi warranty valid for and is it renewable?
3. Are there any S4 4.2 buying guides for me to read?

Cheers.

5LitreV8

[obes]

A few bits here