2019 Hyundai Sonata

The dominant pattern in 2019 Sonata complaints centers on the engine, which accounts by far the largest share of reported issues. Owners most commonly describe excessive oil consumption, often saying they need to add oil every few weeks between changes. Related complaints include check engine light illumination, misfires, and in a smaller number of reports, smoke or fire originating from the engine compartment while the vehicle is parked or at startup. Exterior lighting is the second most-reported system, though the complaints there are less concentrated around a single symptom. A smaller group of owners reports multiple driver-assistance warning lights, covering lane departure, blind spot monitoring, and automatic emergency braking, activating simultaneously, sometimes shortly after purchase. The oil consumption pattern is the most consistent thread across the engine complaints, with many owners noting the problem appeared early in ownership.