10.0

really awful
Crashes / Fires:
3 / 13
Injuries / Deaths:
3 / 0
Average Mileage:
27,840 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2016 Kia Optima engine problems

engine problem

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2016 Kia Optima Owner Comments (Page 1 of 19)

problem #364

Mar 082025

Optima

  • miles

A D V E R T I S E M E N T S

Vehicle has been burning oil excessively for the last 3 years until engine finally went out

- Crystal Springs, MS, USA

problem #363

Feb 242025

Optima

  • 66,000 miles
The contact owned a 2016 Kia Optima. The contact stated while driving at an undisclosed speed, the contact noticed smoke coming from under the hood. The contact stated that the passenger, who was seated in the rear passenger's seat, advised the contact to stop the vehicle. The contact stopped and parked the vehicle. The contact and the passenger exited the vehicle. The contact stated the engine was on fire. The Fire department arrived and extinguished the fire. A Fire report was filed. No police report was filed. No injuries were sustained. The vehicle was towed to a local tow yard. The vehicle was condemned as a total loss. In addition, the contact stated that two days before the failure, the vehicle was serviced by an independent mechanic. The independent mechanic replaced the engine sensor and the valve cover gasket. The manufacturer was made aware of the failure and a case was filed. The failure mileage was approximately 66,000.

- San Bernardino, CA, USA

problem #362

Mar 052025

Optima

  • 48,889 miles
The contact owns a 2016 Kia Optima. The contact stated that while driving at an undisclosed speed, the vehicle failed to operate properly. No warning light was illuminated. The vehicle was taken to a local Good Year Service Center where it was diagnosed and determined that the battery, alternator, and drive belt needed to be replaced. The vehicle was repaired; however, several miles later the engine seized. The local dealer was contacted. The vehicle was not diagnosed or repaired. In addition, the contact stated that all four windows shattered, and the window regulators were replaced several times. The contact stated that the front driver-??s and front passenger-??s side windows had shattered, and moisture entered the cabin of the vehicle during inclement weather. Upon further investigation, the contact related the failure to an undisclosed NHTSA recall. The manufacturer was made aware of the failure. The failure mileage was approximately 48,889.

- Orlando, FL, USA

problem #361

Mar 012025

Optima

  • miles

A D V E R T I S E M E N T S

Check engine light came on and lost engine power while entering traffic on the freeway, almost got rearended buy a vehicle from behind, very scarry! car is at the Kia dealer getting diagnosed.

- North Adams, MI, USA

problem #360

Feb 272025

Optima

  • miles
Engine started making a knocking noise. Took the car to a machine that agreed this is the same issue that other Kia's have had. Those Kia's engines were on recall but for my year, it is not on recall. Even though it's the same exact issue. Car maintenance is up to date.

- Monrovia, CA, USA

problem #359

Feb 242025

Optima

  • miles
Vehicle went into emergency mode while in the highway system completely locked could not drive lost power and was forced to pull over and have vehicle towed, mechanic took a look indicated new alternator was required there for we purchased new alternator and new battery car turned on and same issue happened with in 20 minutes of test driving vehicle, this happened twice and could have cost our life-??s! I am extremely disappointed and frustrated I have no means to fix the vehicle we used out saving to finally replace what we though was the issue but I-??ve come across many same issues from other parties who experienced the same issue. The vehicle is paid off and we need assistance in fixing this issue it appears the engine or electrical issue at this point but I am scared to get on the road we have tried charging it back on but steering wheels locks up and dies a few minutes after please help

- Jarrell, TX, USA

problem #358

Feb 262023

Optima

  • 70,000 miles

A D V E R T I S E M E N T S

The contact owns a 2016 Kia Optima. The contact stated that the vehicle was experiencing an excessive oil consumption. The vehicle was taken to the dealer, where the contact was advised to complete an oil consumption test. The contact declined. The contact stated that upon driving approximately 500 miles after the oil change was performed on the vehicle, there was no oil left in the engine. The check engine warning light was illuminated. The vehicle was taken to the dealer, where it was diagnosed that oil was leaking onto the spark plug. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 70,000.

- Phoenix, AZ, USA

problem #357

Feb 092025

Optima

  • 147,000 miles
The contact owns a 2016 Kia Optima. The contact stated that while driving at approximately 55 MPH, the vehicle lost automotive power. The check engine and the engine oil warning lights were illuminated. The vehicle was towed to a local independent mechanic where it was diagnosed and determined that the engine needed to be replaced. The local dealer was contacted; however, the vehicle was not repaired. The contact stated that the vehicle warranty had expired. The manufacturer was made aware of the failure. The failure mileage was approximately 147,000.

- Kansas City, MO, USA

problem #356

Feb 042025

Optima

  • miles
My 2016 KIA Optima is burning 5quarts of oil very fast every 2,000 miles. When I put oil in my car then 2 weeks later or a few weeks past, my car empty from oil

- Jacksonville , FL, USA

problem #355

Dec 302024

Optima

  • miles
Driving vehicle down the highway and engine seized up without any warning. According to Kia cooperate the vehicle could have experience a "bent rod failure". This was confirmed by a nearby Kia dealership service tech.

- Valley Falls , KS, USA

problem #354

Jan 262025

Optima

  • miles

A D V E R T I S E M E N T S

The car has been burning a qt of oil every 4-5 days. Now it stalls when changing gears and won't go faster than 45 MPH.

- Laguna Niguel, CA, USA

problem #353

Jan 142025

Optima

  • miles
Driving down the road trying to accelerate. My rpm's wouldn't go over 2000. The engine started fluttering and the accelerator stopped working. Went to take to local repair shop and they stated it was an issue with the engine. problem listed after a scan: OBD P1326 Recall NUMBER: PI1802W/X (Rev 2, 01/28/2019) With this stated. My vehicle under the same Year, Model, Engine, and Production Date are all calling for a recall but my VIN doesn't have a recall. So I am wanting to enquire why my vehicle doesn't have this recall.

- Valparaiso, FL, USA

problem #352

Sep 022024

Optima

  • miles
The car is leaking a massive amount of oil. This was accompanied by a warning light for low oil levels. Problems started in the summer/fall of 2024. It is available for inspection upon request. An independent mechanic has confirmed the leak and replaced the spark plugs in September 2024 ago, and the oil was changed as part of regular maintenance in October 2024, but the car is still leaking oil (just had to add 2.5 quarts of oil after the check oil light came on again). The mechanic suggested I check for related recalls and report the issue.

- Pittsburgh, PA, USA

problem #351

Dec 152024

Optima

  • 149,020 miles
The contact owns a 2016 Kia Optima. The contact stated that after having a routine oil change and tire maintenance, the vehicle began making an abnormal clunking sound. The vehicle failed to start. The check engine warning light was illuminated. The message that the automatic brake was disabled was displayed. Additionally, several unknown warning lights were illuminated. The contact called an independent mechanic and was referred to the dealer. The contact called the local dealer, and the vehicle was towed to the local dealer, where an unknown diagnosis was made. The vehicle was not repaired. The dealer declined to repair the vehicle. The manufacturer was not contacted. The failure mileage was approximately 149,020.

- Covington, TN, USA

problem #350

Nov 142024

Optima

  • miles
Engine burns over 2 quarts of oil every 500 miles due to carbon build up in engine resulting in engine ceasing up.

- Augusta, GA, USA

problem #349

Oct 182024

Optima

  • miles
The contact owns a 2016 Kia Optima. The contact stated while driving at an undisclosed speed, there was an abnormal rattling sound coming from the engine compartment. The vehicle was taken to an independent mechanic for a scheduled service and the contact was informed that while the vehicle was running, the engine was vibrating abnormally. The contact was informed that the rattling might have been caused by the abnormal vibration of the engine. The vehicle was not repaired. The contact stated that the engine was replaced in 2023 under an undisclosed recall repair. The manufacturer was not made aware of the failure. The failure mileage was unknown.

- Raeford, NC, USA

problem #348

Jul 122024

Optima

  • miles
On [XXX] I was proceeding to come up to the stop sign when out of no where the car started rapidly accelerating and when I proceeded to step on the brakes it wouldn't stop it only sped up more. And caused a server accident that left me with serious injuries. And I cause of the defect they found me at fault said I failed to yield at a stop sign. The car never was fixed from the 2 times the motor has to be replaced by Galena Kia in fort Myers fl. They even caused the ac to go power retarded and wouldn't work half the time. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Lehigh Acres, FL, USA

problem #347

Oct 012024

Optima

  • miles
To whom it might concern. My car suddenly started burning a lot oil every 800 miles I had to change the oil twice a month and I have contacted Kia number of times and took the car to the dealer but no one helped me until last month when I was driving the car and suddenly the engine stops while I was in the highway and almost got hit by a truck and was a death near experience and I am still suffering from that incident mentally. Please notice Kia knew about the car problem and refused by all means to help me and now they refusing to acknowledge they defect with their cars and meanwhile I am left with near death experience and 8k dollars to buy a new engine.

- Rockaway Park , NY, USA

problem #346

Oct 242024

Optima

  • miles
While driving my car Engine just cut off, and now it has a knocking noise, miles on the car 94739. Its my understanding that there is a recall on the engine for this reason issued in 11/2023 the car Manufacture refuse to replace engine. Car was taken to Kia New Port Richey, were the car was purchased on 01/08/2017. The safety problem is when engine shut down while driving in the middle of the road, no warning lights came on until after the engine turned off. its my understanding that the engine is blown. i called Kia Motors and they said will not replace engine because i did not take car in for the recall, and i was unaware there was such a recall

- Dover, FL, USA

problem #345

Jun 292024

Optima

  • miles
The car was bought with 88K miles and uses oil badly and its got 92K miles and its basicly new I seen recalls for such problem

- Batesville, AR, USA

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