2017 HYUNDAI SONATA Complaints

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The contact owns a 2017 Hyundai Sonata. The contact stated that the headlights were very dim while driving at night. There was no warning light illuminated. The dealer was contacted, and the contact was provided a diagnostic fee to have the vehicle inspected. The contact then took the vehicle to an independent mechanic where the contact was informed that the defect was a manufacturer defect that only the manufacturer could resolve. The manufacturer was not notified of the failure. The vehicle was not repaired. The failure mileage was approximately 58,000.

On February 27, 2023 we went to the Hyundai Dealer because our engine was leaking oil and we were told by Pep Boys that the Rear Main Seal was leaking. The Dealership scheduled us a service appointment three wks later, on March 23, 2023, when they replaced the valve cover gasket and the high pressure fuel pump gasket. On Jul 15, 2023, 2.5 months later, we return to dealership because our engine was leaking oil again and had leaked into the spark plugs tubes. They replaced the valve cover gasket again. Two weeks later on July 28, 2023, we went to the Dealership because the engine light turned on and the engine was misfiring while driving. They did nothing but added 3 quarts of oil because our oil was low despite us changing our oil 1 month prior (June 28, 2023). On September 25th, we returned to the dealership because our engine light turned on and our engine was violently shaking while making noise. At this point, we were frustrated and did not feel safe driving the car. We pleaded with the Service Manager to replace the engine from all the issues we have been experiencing including having to constantly add oil or change oil every 2.5 months. They held on to our car for 1 wk and gave us a rental. After inspecting our vehicle they replied that there was no engine issue detected so the Manufacturer will not replace the engine under the warranty. They only replaced the spark plugs and charged us with the service, parts & rental costs. It is now Monday, Dec 18, 2023, 1 wk before Christmas, and our engine light turned on once again while driving with our toddler in the vehicle. The engine not only misfired but did not allow us to accelerate beyond 30mph during high traffic hours on a road with a 50mph limit. The next service appointment available is 10 dys away, Dec 28, 2023, and they are asking us ~$400 to service the car. We feel helpless with the dealership/manufacturer, they are refusing to replace the engine. We fear that they are waiting for the warranty to expire.

The contact owns a 2017 Hyundai Sonata. The contact stated that after having an oil change, the engine seized. The contact stated that while driving at a slow speed, the engine seized. There was an abnormal knocking sound heard. After the failure, several unknown warning lights were illuminated on the instrument cluster. The vehicle was towed to the local dealer, where it was diagnosed that the engine had seized. There was a leak at the valve cover. Additionally, the crankshaft had seized. The vehicle was not repaired. The manufacturer was contacted and filed a case, but no assistance was provided. The failure mileage was approximately 165,051.

First time I took my vehicle to the shop for over consuming oil they replaced the oil and cleaned all the parts. A few months after this my car would not accelerate properly and had a loud knocking noise in the engine and check engine light came on. After taking it to the dealer I was told I would need to replace the whole engine. I have proof of proper care done on the car but since I am second owner it is not covered in the original warranty. My car could have stalled and resulted in me and my family injured at the least. Hyundai knows about these issues and needs to recall the engines.

The contact owns a 2017 Hyundai Sonata Hybrid. The contact stated that after his daughter started the vehicle, the vehicle began to knock and shake violently, and his daughter smelled a burning odor within the interior of the vehicle. No warning lights were illuminated. The vehicle was towed to the dealer, who determined that the connecting rod bearings inside the engine had worn prematurely, requiring the replacement of the engine. The vehicle was not repaired. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 21V727000 (Engine), but the VIN was not included. The manufacturer was not notified of the failure. The failure mileage was unknown.

The vehicle has twice been disabled while driving due to “lost communication with hybrid module powertrain control module.” This breakdown is a significant safety hazard as the car loses power and coasts to a stop without any warning. The second time was on a 65 mph highway. Neither time has had any warning before the malfunction lights appeared. The first time occurred on 10/7, and the vehicle was towed to the dealership. Nothing was done besides clearing the trouble codes and test driving with the car, which returned at the end of October—the second time the breakdown occurred about a month later on 12/3. This second time, I removed the code myself on the roadside so as not to be in more danger, and I am currently awaiting an update from the dealership’s service department on their next steps after initially being told to just have it towed in again. Losing power without notice is incredibly concerning. I want to report this safety issue and determine my next steps to resolve it, as this has dramatically impacted my trust in the vehicle and its safety.

I have a 2017 Hyundai Sonata I bought brand new. My car started burning oil where I was having to put oil every time I put gas which is weekly. I did the oil consumption test where I drove it 1000 miles 3 times and it burned 1.75qts, 2 qts, and 2.75 qts. They are saying it needs a new engine.

In May, the engine completely failed as I was driving on the freeway, without cause. It had to be towed to the dealership where luckily the engine was replaced under warranty. Less than 6 months later, the HEV and CEL warning lights came on as I was commuting to work via highway. The car was very low powered, hard to accelerate, and immediately decelerated whenever I started to let off the gas pedal. It struggled to go at or above 60-65 mph. The freeway speed was 70 mph and it was a safety risk for the car to power down. Dublin Hyundai could not replicate the problem, simply recharged the battery and said I was good to go. Less than 1 week later, the exact same thing happened as I started on a road trip. I had to return the car home and get it towed to Stockton Hyundai for diagnosis. This is car is only 6 years old, has been routinely maintained, and just hit 100k miles, for which Hyundai is denying any repair assistance even though there is a lifetime hybrid battery warranty.

About a year ago during an extended freeway drive I noticed my engine started to sound different. I checked the oil and found it was a quart low which had never happened before. I filled the oil to its proper level and continued driving. About 100 miles later I decided to check the oil again and found it had used about 1/4 quart. Later my check engine light came on and it showed a code related to failed exhaust sensors. Since then I have had to check and fill the oil every 100 miles or so and now carry 5 quarts of oil in the trunk. I also noticed that my exhaust leaves an oil mark on the ground if I leave the engine running for a couple of minutes. I checked for oil leaks and didn't find any. My miles per gallon reading is also down. Seems to use most oil during freeway driving. I worry the engine could fail at any time and have been forced to restrict my driving to short local trips. I had the knock sensor installed per Hyundai's recall. Hyundai refuses to cover an oil consumption test.