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What 4 owners told NHTSA about the 2019 Hyundai Sonata Plug-in

These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.

All (4)Fuel system (2)Electrical system (1)Engine (1)Transmission & drivetrain (1)

2 of 4 complaints match · Fuel system · clear filters

Sep 7, 2023Fuel system

While driving the car it suddenly decelerated and multiple warning errors on electronics, driver assist, braking started going off then the error message of Check Hybrid Turn Engine Off came on. I was able to coast into a parking lot as the car could only go around 5 miles an hour. I turned the care off and on and the Check Hybrid Turn Engine Off remained for the 2 hours it took to have a tow truck come to take the car to a dealer. The car has 16,383 miles and prior to this there was no warning or error messages. The dealer hasn't reviewed the car yet, but the fact that it immediately, with no warning, decelerated and would go only 5 miles an hour is very risky and unsafe.

NHTSA ODI 11543096

Oct 21, 2020Fuel system

THE MESSAGE "HYBRID SYSTEM FAILURE" SUDDENLY DISPLAYED AND THE VEHICLE LOST POWER AND STALLED. THIS OCCURED ON HYW (65MPH) AND NEARLY CAUSED WRECK FROM BEHIND

NHTSA ODI 11365546

Working with the data? Download all 4 complaints as CSV · fetched from NHTSA July 21, 2026

How to use these: a complaint is one owner’s report, filed voluntarily and published unverified. Patterns matter more than any single story. If several owners describe the same failure at similar mileage, put that system at the top of your pre-purchase inspection list. Back to the full 2019 Hyundai Sonata Plug-in verdict →