There is a big difference between vehicle dependability (this list) and actual engine reliability.
Let me know who is the largest manufacturer of internal combustion engines and who makes the most reliable engines. Hint: it's the same brand, and its not Korean, American, European.
Who funded this JD Power study group? Do we also have their names? JD rankings have seldom been independent and neutral even in the past. Do they survey the same car owners after 5 years of ownership? 10 years?
Since this is a US market specific focused ranking, do we know the average ownership span of a car in US vs Pakistan?
The car brand you see in the top of this list had its 0.5 million cars recalled due to fire hazard, not to mention endless pre-mature engine failures or turn signals that can flash in the opposite direction of what the driver intended.