Basically, I bought a 2004 1.8t quattro manual in November and I've already put 15k on it. Now it's at 125k. The car was in great shape when I bought it and it is still doing well. Although, I've done a bit of work since I got it to prevent future problems (Rear brakes, axle, flex pipe, radiator temp sensors, crank sensor, all front control arms, and tie rods). I have no problem doing this work, and I do it myself, but I want to make sure it will last. Is there anything outside of fixing a problem when it occurs, such as preventative maintenance? What are the more notorious issues that I can run into at higher miles on this car?
I'm just worried that it won't last me for a few years more and I want to be sure it will by doing the right thing early.