Engines are unreliable for longetivity.
Taking big risks on 5k+ extended oil changes.
Taking big risks on letting the engine run low in oil.
Taking big risks on using thin OEM oils while fuel dilution runs above normal levels.
Some of the engines are chatterboxes.
Most of the TGDIs run subpar on 87 octane gas.
Insides of the engines load-up on carbon / soot prematurely.
I'm missing a couple more reasons why our household won't buy any more HyunKia's. It's too bad about the engines, because everything else inside & out appears well-well built...... not even a single rattle after five years on the Kia and six years on the Hyundai.
The wife and I will be lucky to live another 10 years and that's the time-frame for our Hyundai and Kia to reach 100,000 miles each. It will be interesting to see if we outlive these two engines, or these two engines outlive us. I'll be sure to leave a report on how things fared in 2034, either from our human nature electronics equipment, or telepathically anomalous.
If the message I share with you smells like burnt hair thru your computer, don't retrieve a full tea kettle of cold water to cool me off. It may turn out to be the Hyundai or Kia engulfed in flames on I-75 Interstate in Michigan. Many have been known to do that.