Sat evening driving thru downtown dallas car suddenly and without warning lost power and refused to start again. Luckily able to coast to exit ramp. Tow bill of $300 to get off roadway. Monday morning another $110 to tow to mechanic. Mechanic says engine is gone, but can't explain why. It simply seized up. New engine required.

- Bonham, TX, USA

Car stopped in the middle of the freeway while 120 miles from home. Engine, oil, battery and eps lights all came on at the same time and car slowed down until it stopped. I was barely able to move it from the middle lane to the right side of the freeway. My car was still over the white line and it could have easily been hit by oncoming traffic. Car was smoking from the passenger side. Towed to nearby mechanic who stated that car had no oil. I just received an oil change less than two weeks prior and had 2500 miles left before I needed another one. Mechanic stated that I need a new engine. I just purchased this car in Feb 2018. Warranty is fighting me on fixing it so now I have payments on a car that doesnt work and its still 120 miles away. I had to get a rental just to get my family home safely. This vehicle is clearly having engine issues that no one seems to care about but my family was in extreme danger and no one seems to care about that.

- Columbus, OH, USA

Internal engine noise and unusual amount of oil consumption, approximately 1 qt. Per 500 miles. Found usa today dated 09/25/2015 stating posted by the NHTSA that Hyundai announced a recall of my vehicle for this exact problem but local Hyundai dealer stated that my vehicle was not covered by this safety recall.

- Blackwood, NJ, USA

Engine stalls at high speeds and slow down dramatically. Have taken to hyudai twice, they say the engine recall has nothing to do with stalling only knocking and they want to charge me $104 diagnostic charge when clearly all the newspaper say that it possibly has debris which can clog fuel lines and cause stalling, they said this in not covered under the warranty or recall. It has happened numerous times in the past three years, but they won't do anything about it. Last time is listed below

- Oviedo, FL, USA

Car just won't start at all it has oil and stuff in it and it won't start it's a push start I got it from car max about 5 months ago.

- Chicago, IL, USA

The thermostat housing is plastic molded over a steel (metal) core. Where the housing is bolted to the engine over the input and output coolant orifices an internal piece of plastic flaked off the steel core behind the gasket surrounding the input orifice. At rest no coolant leaked out of the cooling system. However, at operating temperature and pressure, the coolant sprayed out of the engine in a fine mist/spray. Although there was an odor of coolant while driving, all searches around the heater core, under vehicle resulted in no evidence of coolant leak. On an extended trip at 103,000 miles enough coolant evacuated the cooling system to facilitate a blown head gasket. Yet there were no warning lights indicating overheating. The blown gasket was discovered when there was a sound of gurgling liquids originating from the coolant reservoir when we reached our destination, a thick sludge of coolant and oil permeated throughout the engine, heater core, throttle body and radiator. It was during repairs the thermostat housing was found to have the interior damage. If we had been driving 30 miles further than we did, the engine would have seized at highway speed, undoubtedly causing an accident. Thank god we stopped when we did.

- Jackson, MI, USA

The contact owns a 2011 Hyundai Sonata. While accelerating to 40 mph, the instrument panel began to flash and the radio and air conditioning turned on and off. The vehicle completely shut off. The contact pulled over and attempted to restart the vehicle. The contact noticed smoke and flames from the driver's side of the hood. There were no injuries and a police report was filed. The dealer and manufacturer were not notified. The cause of the failure was not diagnosed. The failure mileage was 144,000. The VIN was unknown. * consumer stated mileage on the car was 143,424. Updated 11/8/18

- Medford, NY, USA

The contact owns a 2011 Hyundai Sonata. While driving 75 mph, the engine failed and the vehicle stalled without warning. The vehicle was towed to duncan Hyundai (2050 roanoke street, christiansburg, Virginia 24073, (540) 382-2100) where it was diagnosed that the motor failed. The manufacturer was made aware of the failure and provided case number: 114-85-200. The failure mileage was approximately 79,000.

- Evans, GA, USA

Car was towed to dealership no service code showed up said I need to buy a new starter / authorized repair they drove it it stalled they restarted it engine caught fire oil wasn't going through engine etc etc etc damage extensive needs new engine

- Grand Blanc, MI, USA

Driving on highway...in motion...failed to accelerate

- Grand Blanc, MI, USA

Engine was recalled in 2015, the warranty for the engine recalled was extended to 10 years 120,000 mile warranty. I just recently bought a 2011 Hyundai Sonata turbo 2.0 with 146,000 miles. After less than a month of my son driving it the engine began stalling out and smelled of smoke. I contacted Hyundai to see if they would perform the inspection and do the repair work they stated they would not since the car exceeded had exceeded the mileage warranty. I am currently having a new engine installed, and would like the NHTSA to investigate and see if I can get a reimbursement for the engine replacement cost

- Southaven, MS, USA

Engine oil light keeps apprearing and then disappearing. Oil is disappearing like crazy, car is stalling on the road. Was going about 30 miles per hour

- Massillon, OH, USA

Takata recall my 2011 Hyundai Sonata limited has been having problems with the engine not turning completely. My car is a push to start, so when holding the brake and pushing the start button the car still hesitates to come on but the lights on the dashboard do so I know it's not a battery issue. This has happened a couple years ago and I was stranded in my car at work, after several tries it eventually switches over and comes on. I've read several complaints from other Hyundai Sonata owners having the same exact issue, I'm hoping Hyundai takes action in resolving this malfunction.

- Rixeyville, VA, USA

Engine seized up while driving again. The engine was replaced 2 years ago with the Hyundai engine recall campaign. The vehicle has been maintained but Hyundai will not cover the engine even though it is under warranty. I was driving down 35 in dallas with my 6 year old son and the engine seized up and I could not control the vehicle.

- Carrollton, TX, USA

The contact owns a 2011 Hyundai Sonata. The contact stated that whenever the vehicle was in park, the engine would occasionally fail to start. The contact would have to place the vehicle in neutral and make several attempts before the vehicle would start. There were no warning indicators illuminated. The contact stated that the vehicle was included in NHTSA campaign number: 18V137000 (seat belts, air bags). The vehicle was taken to a local mechanic for diagnostic testing, but the computer could not read the codes. The vehicle was not repaired. The manufacturer and dealer were not made aware of the failure. The failure mileage was 186,185.

- Bensalem, PA, USA

I was driving on the highway and started to hear a knocking noise coming from the engine three days later car stopped turning on and there's smoke coming out the engine when you try to start it, car will not turn

- Orlando, FL, USA

The contact owns a 2011 Hyundai Sonata. The contact stated that there was an abnormal noise progressing from the engine compartment. The dealer (seidel Hyundai, 9 parkside ave, reading, pa 19607, (610) 775-5100) indicated that the parts needed for the repairs were unavailable and on backorder. The vehicle was at the dealer for over two months. In addition, the vehicle was included in NHTSA campaign numbers: 17V617000 (seat belts) and 18V137000 (seat belts, air bags). The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 69,000. Parts distribution disconnect.

- West Lawn, PA, USA

The contact owns a 2011 Hyundai Sonata. While driving 70 mph, the vehicle stalled and all the warning indicators illuminated. In addition, the engine seized. In order to pull over to the side of the road, the vehicle had to be restarted multiple times as it continued to stall. The vehicle was taken to route 60 Hyundai (8575 20th St, vero beach, fl 32966, (772) 569-6004) where the contact was informed that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was 65,000. * consumer stated the manufactuter was made aware of the incident. They replaced the engine but refused to assist in replacing the vehicle. The car pulled to the left heavily afterwards. The dealer assisted me with discounts to replace the vehicle as I no longer trusted the vehicle. My complaint is solely against the manufacturer. Updated 10/22/18

- Vero Beach, FL, USA

The contact owns a 2011 Hyundai Sonata. The contact stated that the vehicle was difficult to start and an abnormal grinding sound was heard when driving. In addition, the vehicle stalled when switching gears and the check engine warning indicator was illuminated. The contact also received a recall notification for NHTSA campaign number: 18V137000 (seat belts, air bags). The vehicle was taken to an independent mechanic who diagnosed that the manifold air pressure sensor was faulty and needed replacement. The vehicle was not repaired. The dealer was not contacted. The manufacturer was not made aware of the failures. The failure mileage was 120,029.

- Jefferson, MA, USA

I was driving to work, stop at the stop sign, as I traveled 30 feet through the intersection my car died on me. The car wouldn't crank, no sound, nothing. I pop the hood and notice there is smoke coming form the engine compartment, I check all my fluids and there was no engine oil present in the engine. No low oil indicator came on. I just had a 60,000 miles maintenance to included an oil change as well. The vehicle as towed to a local mechanic shop to have them diagnose it.

- Bel Air, MD, USA