Oil on my drive - please help!!
I recently bought a 2003 A3 TDi sport 130. Ther are 80k miles on the clock. This was 3 weeks ago. In the 3 weeks I have 1) Paid £170 to get the drivers door lock changes due to the 'driver door display showing as open' common fault. 2) Had to change the battery costing me £70 due to the battery just dying of apparent old age one night (took it to local garage and would not hold charge) 3) Noticed several 'jammy dodger' size patches of oil on my drive.
This is the bit that is concerning me the most (maybe unnecassarily) but I know nothing about cars. Mt neighbour jacked it up and could feel oil seeping through the cover that is held on by about a million allen key screws but couldn't locate where the leak was coming from, nor could he see any oil under the bonnett as everything is just in the way.
The oil is not dripping out constantly as I watched for about half hour and didn't see a drop (sad I know) and some mornings there is no 'fresh' oil mark on the drive.
I know this a really vague diagnosis but does anyone have a clue as to whether I should be slightly / very worried or what it could be??
Also, any ideas what costs inolved in redoing the leather on driver seat as it's starting to fade / wear?