2018 Hyundai Sonata Fuel system Problems

“My 2018 Sonata will not start when temp drops below 20 deg f. It has happened 3 times this winter and when it warms back up to 40 to 50 degree it will start. When I turn the key on all the lights on the dash light up like normal. I can move hear selector and turn wheel. But the starter will not engage nothing is heard not a click or a shirt. Is this common problem?”

“Car consumes TOO much oil. Even after I get an oil change I have to add more oil weeks later and the oil is always black. Several times the sensor has gone out on me on the hwy and I’m not able to accelerate or go over 35 miles which is extremely dangerous .”

“In feb 2020 my Sonata went into safe mode after exiting highway and dealer ended up replacing knock sensor . In december 2020 my engine stuttered throwing me forward as if I had hit brakes hard. No warning lights or messages occurred and after a few seconds car acted normally mostly. A few days later after exiting highway again the engine warning light (orange) came on along with error message possible condition with engine control system has been detected. Car did not go into safe mode and seemed to be operating normally. …”

“The car was sitting in the parking lot and randomly black smoke started coming from it and then it turned into fire within in minutes. No one was in the vehicle and 911 was contacted.”

“Throttle response: feels like the old vehicles with a flat spot in the carburetor accelerator pump. The three second' rule applies when the throttle petal is pushed. There is a serious hesitation as the engine tends to fall flat before accelerating. Has to due with the six speed automatic transmissions duel clutch which acts as if a person were operating a standard transmission clutch. I have discussed this problem/concern several times with the service department where the vehicle was purchased. The service department indicated they receive numerous complaints. …”