Hi Sean
Here's a link to the Lookers Audi service prices for S model cars to give something to compare against:
https://www.lookers.co.uk/audi/servicing-and-parts/servicing-prices/s-models
They quote a major service for an S6 as £649, but for an older car the prices may vary.
I'm not associated to Lookers Audi in any way - apart from recently buying a used car from them so already knew about their servicing prices page.
Definitely worth getting detailed quotes from a few different sources before committing.
Regards,
David
