I'm looking for some help in valuing my Audi S4 Convertible. Manufactured in 2006, this S4, presented in Sprint Blue, has only covered 15,000 since new. I appreciate it's a unique car and is one of the 4.2 V8 models with a great sounding engine. The various guides do not recognise the extremely low mileage so I am opening the questions to seek help. Thanks in advance.