I put my car into Donald Kirk in Perth to get my wheel alignment done a few years ago, they give a before and after printout of the geometry, I knew it was out because the tyres were wearing unevenly (when i bought the car), been a good few miles and tyres wear perfectly still. I did fail an MOT for tie rod ends movement, (but this was harsh as they are rubber filled and we couldnt make them movewhen removed for changing), took it back up to Kirk to say my car had failed less than 1000 miles after tracking adjustment had been done, they did it again for free. It was about £80 to get done, well worth that amount tho, car has been great, never pulls to one side or any other problems.
Just while on the subject of Audi dealer service, I have a boost issue on my 2.5tdi A4 B5, and Perth Audi said they would include diagnostics free when it got a service, so rather than service it somewhere else and then pay £90 for the diagnostics I let them do the service to get the free diagnostics (worked out around the same, or less than getting a specialist to do the service then going to Audi) they said my car was UNSAFE to drive!! Said my fuel pipe was leaking (it has dampness, but no dripping, even after over an hour idling in the same place at work 'cos I forgot I had left it idling one frosty night) and my front flexy brake hoses were split (the rubber had started to crack, but no damage to the braiding). They wouldnt road test my car and therefore do the diagnostics, which was the main reason I had gone to them in the first place.... well p***ed off!!
