Table 1 shows five common engine and engine cooling related problems of the 2020 Hyundai Sonata. The number one most common problem is related to the engine and engine cooling (33 problems). The second most common problem is related to the gas recirculation valve (egr valve) (three problems).
| Problem Category | Number of Problems |
|---|---|
| Engine And Engine Cooling problems | |
| Gas Recirculation Valve (egr Valve) problems | |
| Car Stall problems | |
| Check Engine Light On problems | |
| Engine Grinding Noise problems |
Vehicle experienced intermittent, severe powertrain defect resulting in a critical safety hazard. Between 30k and 36k miles, the vehicle underwent 3 violent highway deceleration episodes. During these events, the engine began shaking, escalating to violent shaking; with deceleration and coming to a Read details...
While stopping at a major highway intersection on [xxx] for a red light vehicle stalls and will not start back up while everyone else continues at a 55 mph mile an hour passing me on each side! this happened more than 6 times . Read details...
On Nov. 17 while driving app. 65 mph on the highway the car suddenly shut itself off. All of the dashboard lights lit up & the car would not restart. After 10 min. Of trying to restart the car, the car started again, & all the lights on the car disappeared. Read details...