Hyundai really isn’t doing much with their product lines to excite people. They are racing to bottom with cheap cars. They have lost huge market share in China which is still fastest growing market. Losing market share in US. They have failing business model.
Hyundai (and Kia) have lost marketshare in China primarily due to Beijing-led boycott over Korean products (due to the THAAD dispute) and both still haven't fully recovered from it.
In addition, like for the NA market, H/K were slow to increase their CUV/SUV offerings in China (altho China got a subcompact CUV before we did).
Don't know what you are talking about cheap.
The new Santa Fe has been lauded for its interior quality and reviewers have stated that the interior of the upcoming
Palisade could pass for a Lexus (the Palisades' interior embarrasses that of the Highlander or Pilot).
Even the Tucson which got an interior make-over has been praised for its quality compared to its competition (admittedly, it needed it as the pre-refresh interior was underwhelming).
The new Sonata is supposed to get a near premium interior.
H/K actually
gained marketshare in the US last year as they added more CUV sales (which finally hit around 50% of total sales).
This should continue as they add the
Palisade and
Telluride and increase supply of the new Santa Fe.
Hyundai was awarded
Top Gear's manufacturer of the year for 2018.
Over in Europe, H/K are by far the dominant Asian manufacturer and they have continued to gain marketshare.
But overall, market conditions will be tough going forward - not just in the US, but worldwide.