2018 Kia Optima Other Problems

Your trunk latch has broken, making it impossible for someone trapped inside the trunk to escape and very difficult for anyone outside to open it. This creates a serious safety hazard, especially if a person becomes locked inside. The trunk latch mechanism will likely need to be replaced to restore proper function.

Your car is burning or leaking oil faster than normal, requiring you to constantly add oil between services. You're also seeing oil coming out of the exhaust pipe, the check engine light is coming on, and the low oil warning system isn't working properly—issues that started before a dealership system update a year ago and have only gotten worse. You've had to replace the spark plugs multiple times during this period. A mechanic will need to diagnose whether you have an internal oil leak, a valve seal problem, or an exhaust system issue causing the oil to burn or leak.

I’ve had the 2018 Kia Optima for a little over a year. I purchased it as a used vehicle. I’ve noticed that the car is utilizing an excessive amount of oil. Each time I get an oil change for the vehicle I am having to purchase oil to refill the vehicle about 2weeks to a month after. I’ve made multiple road trips where I’ve gotten the oil changed before leaving and I drove around 350 miles; halfway through the drive the oil was half empty on the dipstick. The first time this happened I was unaware of this issue and when I arrived to my destination after around 350 miles of driving, the car had little to no oil. I will provide store receipts of each time I had to purchase oil for the vehicle. I will also provide service interval receipts upon request. Dates of oil purchase are as follows: 1.7/18/23 2.8/16/23 3.10/20/23 4.12/18/23 5.2/7/24 6.2/29/24 7.3/18/24 8.5/4/24 9.5/11/24 10.7/9/24 Service intervals for oil changes are kept up with every 3-5k miles and can provide maintenance receipt.

Sudden loss of acceleration at freeway speed. Unable to start after incident. Unknown cause. Shop unable to diagnose.

Trunk latch is broken. Car doesn’t alert that trunk is open.

Excessive oil consumption 1-1.5 months approx. 1,000 miles into new oils change. It is available for inspection. Safety was put at risk due to not knowing there was no oil in my vehicle while constantly driving it as it did not display the oil warning sign on the dash board. The oil change dealership has confirmed an oil consumption issue two separate times. I am familiar with multiple people having this same issue with Kia and hyuandia vehicles. The dealership is requiring multiple steps to be paid out of pocket prior to using the full warranty i purchased to cover the issue even though they know what the issue is and how to fix it.

Vehicle is burning excessive amounts of oil rapidly. Date of Purchase: 04/13/2023 - mileage : 94,000-96,000 Oil light and engine light began flashing about 1-2 weeks after purchase, then went off after first oil change. noticed burning smell on occasion. First oil change 05/23/2023 - mileage: 98,045 Mechanic reported no oil in vehicle. Traveled out of town, checked oil. no oil in vehicle upon arrival. Second oil change: 06/19/2023 - mileage ~99,641 Mechanic reported no oil leak. Checked oil: 07/18/2023 - no oil in vehicle, mileage: 100,790 Having to schedule an oil change before future date and mileage listed below. Next date of oil change: 09/17/2023 - future mileage: 102,641

When we drive the car it hesitates as if it’s going to cut off and it keep burning oil. We have to put in at least 2-3 quarts in per week.

At around 40,000 miles my car started burning oil rapidly. No leaks were found and I would get an oil indicator light then the car would shut down while driving. I couldn’t get it to accelerate. Mechanic said Kia’s and Hyundais have been having those issues. I have needed oil changes every 3 weeks to keep in functioning.

I got out of my car to talk to someone and my car was running With my purse and phone in the car and the trunk open.i was meeting someone to buy a vacuume from Facebook marketplace. I decided to put the vacuum in the back seat instead so closed the trunk. When I went to open the door all the doors were locked. I was locked out in the rain for an hour. The person I bought the vacuum from called kia and they sent someone out to unlock my car. Several people have said the car is supposed to recognize that the key is inside the car and not lock it. And that this is an issue. I do know it has only started doing this recently because I live 8n the country and never lock my car in my garage. And recently I have noticed it is licking itself now every time I get out. So I have been leaving the windows down at home but it was raining today when I got out and I didn't think about or remember that it is locking itself .... Also I have never gotten out of the car to get something with it running and the windows closed since this issue came up.

My car was stolen

Hello, My Kia was stolen lastnight. The criminals apparently the “KIA BOYS” took my car, it wasn’t until after I spoke with my daughter she expressed to me that she saw a video on social media about Kia’s and another car, being stolen excessively. So after doing my research I was sent to this page to share my story. I am sure Kia is aware of the situation, so much so to where they are/have made a change in their 2022 model. But those of use who have a Kia model that is not a 2022, we are screwed. I make monthly payments on a vehicle engineered by adults, but what I’ve just found out is the criminals are mainly middle school age children who takes the cars for a joy ride. It is hard to process this oversight by Kia, I love my car, I’ve had 2 Kias. But this will be my last. Especially if they (Kia) doesn’t own this oversight. To have my car stolen hurts, I didn’t leave the key in, nor the door unlocked. I parked my car, activated my alarm, only to wake up and my car gone. I see there is a lawsuit in a state (I forgot the state) against Kia. I hope and pray the state of Georgia can start one as well. My car wasn’t the only Kia, taken lastnight. There were 3-4 others taken from this complex.

WE RECENTLY PURCHASED A 2018 KIA OPTIMA EX.ALL THE WINDOWS EXIBIT DISTORTION SO BAD ,AS TO INTERFERE WITH LINE OF SITE FROM THE DRIVER SEAT.THERE ARE RIPPLES IN THE GLASS FRONT REAR AND SIDES. AT THE DEALERSHIP THEY SAID THEY COULD BUFF THEM OUT,I MADE A BET WITH THE SERVICE MANAGER HE COULD NOT AS THE PROBLEM WAS BETWEEN THE PLATES OF GLASS.THE DEALER REPLACED THE WINDSHIELDAND HE SAID HE WOULD REPLACE THE DRIVER SIDE WINDOW.BUT THAT WAS SERVERAL MONTHS AGO.I CAN NOT SEE OUT OF THE REAR WINDOW AT NITE.IF IT RAINS ALL VISIBILITY IS SCARY.

While driving at highway speed my children (11, 7, & 5) and I were almost rear-ended when my Kia Optima 2018 (79k) without ANY warning loses power, jerks and then regains power. A number of vehicles behind us had slam on their brakes to avoid a pileup. My Optima almost resembled the feeling when a vehicle runs out of gas but much more abrupt. The drink my son was holding was thrown out of hand due the vehicle jerking to an almost stop and jerking back to power. No warning light, battery & alternator both test good and tank was half full. Two days pass and the same system fail while driving with the same similarities (no warning lights). My Optima is no longer under warranty and I have no financial resources for repairs.

BOTH OF MY BACK DOOR SENSATORS ARE SAYING THE BACK DOORS ARE OPEN BUT THEY'RE LOCKED

WHEN DRIVING AT NIGHT THE LIGHTS WILL CUT COMPLETELY OFF. YOU HAVE TO SWITCH FROM AUTO TO THE ON POISTION. ITS A VERY SCARY AND DANGEROUS SITUATION.

FIRST OFF MY CAR IS FINE. AGAIN MY CAR IS FINE NO COMPLAINTS. NHTSA HAS MISS IDENTIFIED MY 2018 OPTIMA LX WITH 2.4L ENGINE HYBRID. NHTSA WITH THIS SCREW UP HAS OHIO BMV THINKING MY CAR IS HYBRID AND WANTS AN EXTRA $100 DOLLARS AS A FEE FOR LICENSE BECAUSE THEY THINK IT IS ELECTRIC. OHIO BMV OR APPARENTLY NHTSA DOSE NOT HAVE A PROCESS TO FIX THE PROBLEM OR FIGURE OUT MY CAR IS GASOLINE ONLY. OHIO BMV WILL WILL ONLY GO ON WHAT NHTSA WEB SITE SAYS. IT APPARENTLY SAYS MY CAR COULD BE A HYBRID. AS I SAY NO PROBLEM WITH CAR BUT NHTSA HAS MISS CODED WHAT MY CAR IS. HAVE NOT BEEN ABLE TO GET ANY HELP FROM KIA YET.

3 TIMES INTERMITTENTLY BRAKE PEDAL ON MY 2018 KIA OPTIMA FROZE AND TO IT WONT BRAKE. NO LIGHTS CAME ON DASHBOARD. I HAVE ONLY 22.000 MILES ON IT. I TOOK THE CAR TO NEAREST KIA DEALER TWICE. ACCORDING TO THEM THEY ARE UNABLE TO DUPLICATE THE PROBLEM AND COMPUTER NOT READING ANY ERROR CODES VEHICLE UNSAFE TO DRIVE

RANDOMLY BRAKE PEDAL ON MY KIA OPTIMA FREEZES AND IM UNABLE TO APPLY AND STOP VEHICLE IT HAPPENED TWICE ONCE IT HAPPENED ON HWY AND ONCE ON CITY STREET. CURRENTLY VEHICLE IS IN DEALERSHIP SINCE JAN 2ND AND DEALER STATING THEY ARE UNABLE TO DUPLICATE ISSUE

THE VEHICLE IS STATIONARY. THERE IS NO EMERGENCY TRUNK RELEASE FROM THE INSIDE OF THE VEHICLE EXCEPT FROM INSIDE OF THE TRUNK. MY KEYS WERE STUCK INSIDE THE TRUNK THERE IS NO WAY TO OPEN IT. THE TRUNK RELEASE BUTTON FROM THE DRIVER SIDE DID NOT RESPOND. THE TRUNK RELEASE BUTTON FROM THE TRUNK ITSELF DOES NOT RESPOND. THE REAR SEATS CANNOT FOLD FROM THE INSIDE EITHER, BECAUSE IT CAN ONLY BE ACCESSED FROM THE TRUNK

The paint on all four of your door handles is bubbling and chipping, even though you don't use the back seat and passenger door handles much. The rest of your car's paint appears fine, which suggests the paint quality on the handles themselves may be defective. This will likely require replacement door handles or repainting the existing handles with better quality paint.