2017 Hyundai Sonata Plug-In

For the 2017 Hyundai Sonata Plug-In, the dominant complaint pattern involves engine and propulsion failures, often occurring at highway speeds. Owners frequently report the vehicle suddenly losing all drive power without warning, both the gasoline engine and electric motor stop providing propulsion simultaneously, leaving the car rapidly decelerating in fast-moving traffic. Warning messages including "Check Hybrid System" appear on the dash during or after these events. The electrical system is the second most-reported area, with several owners describing no-start conditions tied to the 12-volt auxiliary battery failing, sometimes accompanied by a cascade of error messages on startup before the vehicle becomes completely unresponsive. A handful of fuel and propulsion system complaints overlap with the engine category, reinforcing the sudden-shutdown pattern. The hybrid system fault code P0B68 appears in at least one report connected to engine stuttering and warning lights illuminating while driving.