Oh Citation? Yes, my ex roommate had one, had his engine blow up. He think it is financially sound to replace the engine than to replace whole car. He learn that major mistake! I warned him NOT worth to replace engine. He didn't believe me, so he go ahead. Guess what happened after done with engine replacement that cost him $2,500 or something like that? 3 months after, he was in middle of three car accident, his car with new engine in it became totalled. Insurance company don't give a damn if customer just had replace the engine, gave him the check of $800 dollars based on book value PLUS took his car away. He was so pissed off and tried to fought with them but end up gave up. He told me he regretted for not listen to me. He realized that if had replaced the vehicle, instead of engine, he would have save money that way.
And YES! It depends on who built the vehicle, it is all engineers, programmers, production workers, and the quality of materials they use and how they process them. I thought GM S series truck were the best, but I found myself DEAD wrong! I had 83 S-15 and that one was one of my best vehicle I ever own. I got 95 S-10 and S-15... yes two trucks, both have their engine and tranny blew less than 8 months! No warranty and I was so pissed off and found out the flaw of their design. I end up bought Jeep Wrangler with 4.0L, then Ford F-250 only to find out flaw in engine design and there is no way to fix it (Long story and why) I end up got Ford Excursion with legendary 7.3L engine which has better engine design... You guessed it right, it was different engineer team with 7.3L and 6.0L and those who design 6.0L has to be one of idiots! I was looking for engine that is known to last forever. Like Jeep 4.0L, Ford 7.3L, Chevy 350CID, and 308CID
Also, sometimes government is part of blame, government knew it, and to average joe, it is mistake, to them it is politics. For instance, government made it mandatory that auto maker can not use lacquer paint, required them to use environment friendly paint during 80s, have you recall how bad paint job it was? Just like my ex F-250 with 6.0L where EPA put pressure on to improve emission on Diesel engine causing two engineer team (Ford AND Navistar) made design flaws on 6.0L. Honestly, I do miss the power and torque on 6.0L and could have keep it if I have deep pocket. I hate to say, stay away from 6.0L or 6.4L Diesel engine. For Ford, get 7.3L or if you can afford maintenance cost, then get 6.7L. However, if you are DYI like myself, 7.3L is way to go. Much easier to work on, less EPA BS, less electronic BS or want NO Electronic BS, then it would be first generation of 6.9L/7.3L IDI, not 7.3L DI like mine.
To the environment lovers, quit blame bunch of guys like us that don't give a damn about emission, know why? There are other countries that are worst of the worst with pollution, like China, eh? There are countries that STILL allows leaded gas, Mexico and south America still allow leaded gas. The truth is the rest of us (Who don't give a damn about emission) are much much smaller than other countries.
Thank God, I don't have catalytic converter on my truck!
What about Chevrolet Citation? It was one of the worst car made... so was 1980's Pontiacs... 1980's Jeeps too before 4.0L came out.
Every make have their bad cars made... nothing is perfect.