I purchased my car ten months ago from an Audi dealer under the approved used scheme (with 38k miles).
At the time Audi said they would fit four new tyres to the car and do a 40k serivce in addition to all the usual approved used items.

Ever since buying the car I've had lots of problems with it, most of which have so far been rectified under warranty.

I had noticed that the dealer had fitted what I thought was new budget tyres rather than good tyres. But the other day I found out that one of them has a puncture repair plug in it, so at least one wasn't even a new budget tyre, which lowered estimation of Audi further.

The car is due for an oil change, Audi quoted £180 so I decided to do the job myself using genuine parts and using correct torque settings etc. After changing the oil the car sounded noticeably quieter, I was very pleased.
Whilst I had the bonnet up and tools out I decided to have a quick look at the condtion of the air filter (which isn't scheduled for a change for another year). I was very suprised to find it was almost completely clogged. Then I noticed on the one end it had the original Audi part number, 'Made in Germany' and the date of manufacture which was "October 2008".
So either the filter has been sitting on a shelf for three years before being fitted and then clogging up in just ten months, or, it is the original filter that was fitted when the car was built.

What bugs me is that the service history is up to date but it doesn't look as though the car has actualy been serviced since new. This would explain why many of the common problem which should have been sorted out haven't and thus I had to get them done under warranty.

Do you think it's worth complaining to Audi so long after buying the car ?