worst motors of all time

About 2-3 years ago, my dad had 2001 Volkswagen Jetta, with that vr6 6-cylinder motor. It had nothing but problems. When my dad bought it off one of his friends, it a nasty tick going on under the hood. The next day, that tick turned into clunking noises until it died hours later. $700+ later, it had a new junkyard motor and making noises again, this time it's the chain guides. So he finally gets the motor fixed (after finding a mechanic who fixes Volkswagens) and sells the car, as quick as he can before anymore problems happen, for less than he bought it for.

Another was my dads honda cr-v four cylinder. It had continuous cylinder problems and intake manifold leaks. Same route as the jetta, he fixes it up (twice) and sells it for less than he bought it for.