Euro tech here.
Use premium fuel to help with carbon build up
They burn oil and it’s normal.
Timing is due at 100k miles. It’s not that hard to do
Lower control arms go out around 75k miles
Water pump failure very common
Spark plugs due every 40k miles
Oil change says every 10k, but I recommend every 5k miles
Valve cover likes to leak around that mileage, very common very simple to do
Fuel pump module likes to go out
I bought my little brother an a4, and it’s not that bad.