2016 Hyundai Sonata: shudder or vibration when accelerating

Filed Feb 10, 2025 · Engine · 88,000 miles · AL

The contact's daughter owns a 2016 Hyundai Sonata. The contact was informed by her daughter that while driving at various speeds, the vehicle was shuddering significantly. The check engine warning light was illuminated. The vehicle was taken to the dealer, where it was diagnosed and determined that there was oil leaking onto the spark plugs and causing the spark plugs to short circuit. The dealer replaced the park plugs several times; however, the failure persisted. Additionally, the contact stated that the vehicle was experiencing excessive oil consumption. The vehicle was taken to the dealer several times, where an oil consumption test was performed, and the dealer confirmed that the vehicle was experiencing excessive oil consumption. The contact stated that her daughter had received an unknown engine recall notice, which the contact related to the failure. The vehicle was not repaired. The contact stated that she was concerned for her family's safety. The manufacturer was notified of the failure and several cases were filed; however, no further assistance was provided. The failure mileage was approximately 88,000.

Filed Nov 27, 2024 · Engine · 132,000 miles · VA

The contact owns a 2016 Hyundai Sonata. The contact stated that the vehicle was experiencing excessive oil consumption. The contact stated that 30 quarts of oil had been added to the vehicle in the past four months. The contact stated while driving 65 MPH on the freeway, the vehicle started shuddering. The check engine warning light was illuminated. The contact was able to exit the freeway; however, the vehicle stalled. The low oil pressure warning light was illuminated. The contact was able to pull into the nearest parking lot, and the contact turned off the vehicle. The vehicle had not been taken to the dealer. The vehicle was not diagnosed or repaired. The contact related the failure to undisclosed recalls. The manufacturer was made aware of the failure and confirmed that there were no recalls associated with the VIN. The manufacturer advised the contact to have an oil change performed on the vehicle. The failure mileage was 132,000.

Filed Jun 5, 2024 · Engine · 95,950 miles · SC

The contact owns a 2016 Hyundai Sonata. The contact stated while driving at various speeds, the vehicle shuddered significantly. The contact stated that the vehicle stopped shuddering while shifted into neutral(N). Additionally, the contact stated that while driving and depressing the accelerator pedal, the failure recurred, and the vehicle jerked significantly. The low oil pressure warning light and the check engine warning light were illuminated. The vehicle was taken to an independent mechanic, where four ignition coils and four spark plugs were replaced; however, the failure recurred four months later. The vehicle was taken to the dealer, where the spark plugs were replaced and a fuel induction cleaning service was performed; however, the failure persisted. The contact stated while driving 5 MPH, the vehicle stalled. The vehicle was jumpstarted. The vehicle was taken to the dealer, where it was diagnosed that there was oil intrusion in the combustion chamber, and the spark plugs were fouled. The dealer determined that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was approximately 95,050.

Filed Jun 13, 2021 · Engine · FL

The 2016 MY Sonata has been driven all across the state due to business. During a recent trip of a couple hundred miles, upon returning home, the vehicle shuddered and failed the next day. The vehicle was towed to the nearest Hyundai dealer, and was to be diagnosed. It took longer than expected, and upon calling back to determine the issue, they said the "engine was gone." They reached out to Hyundai corporate and were told the same thing. There were no other signs or symptoms, and the vehicle operated normally during the long trip home.

Filed May 4, 2020 · Engine, Fuel system · 62,100 miles · CA

After a period of driving, which is random at best, the check engine light will appear and the vehicle will start to shudder and lose its ability to accelerate. This happens when the vehicle is in motion and happens both on the freeway at high speeds, as well as on city streets in low speeds. The only way to get this to stop is try and get to a safe space of the road and turn off the vehicle. It is very scary and dangerous especially in southern california freeway traffic and in mountain passes as you lose the ability to maintain speed in the middle of traffic. This could very easily cause an accident. This has happened to me on 7 different occasions over the past 2 months at random times.

Filed Mar 25, 2017 · Engine · 1,361 miles · CA

Every time I release the brake pedal after sitting at a long red light the car shakes and shudders, sometimes really hard, and sounds like it's choking for a few moments before I am able to accelerate. It sounds and feels and acts as though it is going to stall but it has not yet. The effect does *not* happen when the air conditioner or the vent are being used; only when those are off. It varies from mild to really strong. It took multiple trips to the dealer for them to determine that it is normal not just for my car but for all 2016 sonatas. It is a feature where the transmission shifts into neutral at long stops then re-engages in drive when the foot is lifted from the brake pedal. The purpose is said to reduce engine load. I think this is a safety concern is because when a driver removes their foot from the brake and the car's brake lights go off, it is a signal to the car behind them that they are about to go. But the wait time required for the shaking and sputtering to stop before the gas pedal will work results in 'mixed messages' to the driver behind, thinking that you are ready to move forward but you're not really ready yet, and may result in a rear-end collision. *detailed time line attached *official communication from corporate attached.