I am the first person to condemn Audi service based on the prices they charge.
I do however have a vein of sympathy for them in respect of the way they're system works.
1) They have to overcharge to pay for 'the system': Some state it's because they have to have 'all the gear' - I'd argue it's because they have a nice showroom and a huge corporate payroll to fulfill rather than all the tools. Do they have a Beissbarth 4 wheel alignment system, No - how do I know? I had to send my car to an indy to get this done
2) They are timeboxed on jobs - every job is timeboxed whether warrantied or serviced. If a mechanic regularly spend excess time on a job they will ultimately be penalised
3) There is no incentive to go the extra mile as they have set it into the public conscience that 'main dealer' service means more - I'd argue these people are no more Audi than any of the rest of us. The sign over the door is a sign, it's a franchise, it's not Audi AG. They represent.
4) Most of them probably worked on some other brand up until they joined Audi, they're mechanics - it's a day job, not a passion. They get suckered by the corporate system and just do what is needed to get by
5) They are probably incentivised to upsell (washer fluid / wipers / tyres etc.) - every time my car has ever been in they want to sell me tyres so there must be so incentivisation
I'm not saying any of the above makes it right, it just contributes to the misery for consumers.