Hyundai Sonata LF
Weaknesses, engine ratings and buying advice
Generations
Vehicle Weaknesses
| Weakness | Cost | |
|---|---|---|
| Recall: Theta II Connecting Rod Bearing Failure and Fire Risk Manufacturing debris in oil passages causes premature bearing wear. In extreme cases: block puncture, oil fire. $1.3B class action settlement (2021) provides lifetime warranty. Symptoms: Engine knocking, oil pressure warning light, loss of power, smoke from engine compartment from 77,000 km | Low | |
| Recall: Panoramic Sunroof Panel May Detach While Driving Wind deflector adhesive fails. Forcing sunroof closed against loose deflector can eject glass panel. ~62,800 vehicles affected. NHTSA 16V726. Symptoms: Rattling noise when operating sunroof, visibly loose wind deflector | Low | |
| Theta II Oil Consumption — Class Action G4KJ 2.4L GDI with known piston ring defect. Up to 1 qt/1,000 mi. Extended warranty and $760M settlement cover affected vehicles. Symptoms: Oil drops rapidly, blue smoke, carbon-fouled plugs from 64,000 km | High | |
| Recall: Theta II Rod Bearing Failure Manufacturing debris blocks oil passages → bearing failure → seizure. KSDS software warns before failure. Lifetime warranty for affected VINs. Symptoms: Knocking, KSDS warning with chime, power loss from 112,000 km | Low |
Top Reported Issues
Alternatives
Known Problems and Issues
A total of 10 weaknesses have been documented for the Hyundai Sonata LF (2014–2019). Typical issues affect Other, Steering, Body, Electronics.
What to watch out for with the Hyundai Sonata? See the detailed listing of all engine and vehicle weaknesses in the sections above.
Frequently Asked Questions
What problems and weaknesses does the Hyundai Sonata LF have? +
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Last updated: February 2026 · All information without guarantee