The owner satisfaction scores
The owner satisfaction scores make for an interesting comparison, but not a particularly valid one. For example, I would not buy a car with high owner satisfaction, if I did not really like the car for myself, and vice versa. My real issue with midsize cars these days is that they simply got too large. For example, the latest Altima is actually larger than their Maxima. segment creep has gone crazy, and this can explain the current lower sales of midsize sedans, while compacts, which also have increased in size, have gotten more popular.