everything goes wrong with everything eventually. some get lucky and dont have many problems. some have all the problems possible.
to be honest you wont beat an old banger with a carb and none of this electrical crap! the more advanced things are the more things to go wrong. you will find the leon will be in the scrap yard long before some old crappy rusty thing probably. these old cars seem to last ages, compared with the new ones always breaking down due to some electrical
problem/sensor somewhere.