NHTSA Complaint #11458689 — 2017 HYUNDAI SONATA

The vehicle is available upon requested inspection. Since I bought the car in 2019 it has made a rattling sound like the engine is knocking. Not a severe knocking, however, it does make a clicking/rattling sound in idle, occurs more rapidly while accelerating, then sounds like a muffled diesel while the engine’s torque is dropping when shifted into neutral coasting on the road. Oil has been changed in its due time. Between 3k - 7k as scheduled. Independent service provider didn’t think it was normal and recommend I check for recalls. I asked Hyundai dealership representative and said it’s a normal sound. Other vehicles I’ve driven don’t sound like this. Even an older ‘96 Buick sounded smoother running. Nothing has failed, caused an injury or accident. Engine light has recently come on. Temperature is hotter, according to the gage, than we’re it has typically sat for the past couple years. The potential risks increased, not knowing what can happen, when the temp rose and engine light comes. . . . . . . . . . . This, aside from previously stated concern, alarm activates (mostly during the rainy cloudy weather) when manually unlocking the car. Having to relook and unlock to silence alarm.