I mean transmission and engine problems, especially in the finnicky cars, are expensive though. I know with certain kinds of nissans, especially the bigger sedans and mid-range SUV's, you have to take out the entire engine in order to work on some of the parts and/or replace things like the timing belt. Because it's incredibly exausting labor and requires you to do a bunch of things, a $50 repair on a similar car like a corolla could cost north of $400 for the same thing on it.