Do you prefer Korean or Japanese cars? Why?

Japanese cars.

Korean cars don't match with the build quality and reliability offered by Japanese automakers ,hence would always pick Japanese cars over Korean cars.

I prefer the Japanese as they are more experienced in the automotive

industrie.

The answer would have been Japanese if the question was asked a few years back. The remarkable market share growth by Korean car manufacturers like Hyundai and Kia clearly  points out the answer.

And yes ofcourse Korean cars these days are more value to price and of better quality.

Absolutely Japans cars because ( high quality and price after used

Japanese cars had finally been beaten by the koreans in 2015. Hyundai made a good deed by improving their cars by listening to the customer feedback. When given the opinion of hyundai cars looking weird, the korean company immediately hired the designer from Audi, and the complains regarding design was gone. 

I think its safe to conclude that the korean industry has got their quality to the highest levels in non premium sector. 

Hope this helps. upvote if it did. 

off course Japanese it's just because of the product quality and the resale value.

korean car because it is cheap & reliable 

There are standards that we should avoid if we want to distinguish  between the tow types. If we look at the scale of quality ,durability an continuity we choose the japaneses car and if we  want the luxury of multiple additions we find the korean car superior  and was able to attract more..customers and competition especially they are to close in price that's in sedan cars and gasoline cars