I'm a newbie on here but i just purchased an 2001 audi a4. It has 150,xxx miles on it. I was wondering besides ignition coils,timing belt, and water pump what else usually goes bad? Is it bad with so many miles? I got it from a local mechanic that did all the scheduled maintance.

 

https://www.audiforums.com/forum/audi-a4-8/newbie-guide-version-2-a-80968/

 

Depends on how well it's been taken care of. By the time 150k rolls around there are a few things that either have been replaced already or are about to be done...

Control arms and tie rod ends
Axle boots
Rubber brake lines
shocks
02 sensor(s)
MAF
water pump (should have been done w/timing belt but is sometimes not)
Engine/trans mounts
Differential/trans fluid
A couple notorious 1 way check valves are known to rott out by this time (like the one that runs over the airbox.
Vacuum lines
Fuel filter would be a good idea
Valve cover gasket
Crank seal (should be done w/timing, but often isn't.)
I'd be surprised if the stock bypass/diverter valve is not leaking at this point - causing lack of or inconsistent boost.
Original Engine coolant temp. sensor should be pretty gunked up at this point.

I could probably go on, and some or a lot of what I mentioned has probably already been done. But those are most of the usual suspects w/high mileage.

 

Thanks a lot