Which parts fail
Components named in complaints (battery, alternator, wiring, ignition, instrument cluster, infotainment).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 1999 Kia Sephia owners, lightly cleaned up (personal details are redacted by NHTSA).
This car has been a constant repair and financial problem for the last 4 years starting two weeks after I purchased the car. It is an unsafe vehicle and can not be kept maintained for safety or reliability it was purchased with 21000 miles on the vehicle and a majority of repairs has had to be fixed. 4 starters, ignition switch, ignition switch wiring harness (ignition still doesn't work), air bag sensor, air bag wiring (air bags still does not work), alternator, front passenger side drive axel broke while I was driving the car, right passenger ball joint fell off the car while I was driving the car, master cylinder and rear brake cylinder went out at the same time while I was driving the car, heater/air conditioning motor. The car has been towed 3 times, and has left me and my children stranded too many times to count. The car is still in need of major repair. …
The car died while driving down the road repeatedly. Battery leaked. Brakes had to be replaced for the entire car at 60,000 miles. The vents on the dashboard have popped up and broken. Now the defroster does not blow the air on the windshield. This vehicle was stored in a garage. The seams on the seat come undone. The cigarette lighter broke and flops in the dash. The switch to override the transmission lock is broken. The rear brake light broke when replacing the struts which you have to remove the back dash to get to. The board that is under the carpet in the trunk warped. The carpets came up from the sides of the car. The storage bin in the center console broke, twice. The wind shield chips and errodes when in a car wash. I have never seen a windshield in this bad shape before. The back seat does not stay down. The headlights have a bad seal and there is water now in them. …
While driving at approximately 25 MPH, an electrical fire started in steering column and flames were coming from underneath the hood. Consumer was unable to turn engine off by turning the key in the ignition. Insurance company is in possession of vehicle, but has not informed consumer as to what caused the fire to occur. Consumer was unable to turn engine off, but was able to jump out of vehicle while moving, three recalls were performed on this vehicle and consumer believes that recall should have been performed prior to purchase, consumer also complains that the vehicle is noisy, exhibits hard start condition, sluggish acceleration, and inoperative fuel gauge.
Kia Sephia, bought April 1999 new. Replaced battery within first year, turn radio up it goes down and the other way. Intermittently, speedometer unsteady, check engine light comes on and off frequently. Od off light flashes occasionally. Dome light comes on by itself when in door mode. Dashboard indicator also comes on at this time.
The car blown white smoke from the hood of the car!!!now the car don't run under 10 to 15 miles and hour!!! This car has too many recalls and too many major problems. In some cases I feel like suing someone who sells a car in such dangerous conditions know my warranty is up I guess!!
While driving smoke appeared from underhood & sparks were poppingout. Pulled over. Lifted hood & flames shot out. Tried using fire extinguisher to no avail. Fire department arrived & put flames out. Fire had remained underhood and did not spread, possible indication was electrical.
Engine check light would stay on, vehicle overheated & overdrive would blink on/off. Ground wire was suppose to be fixed,but vehicle caught on fire. Vehicle was totalled. Manufacturer said they couldn't do anything, filed a lawsuit. Warranty was not up on vehicle.
Over a period of time, approximately 70,00 miles on my car, the ac/heater fan motor will blow air intermittently, regardless of the fan's speed setting. Eventually, the fan stops blowing all together. This same problem has happened on my 1998 Kia Sephia as well.
While traveling about 45 smelled smoke. Consumer looked though rearview mirror and noticed that smoke was getting darker. Pulled over, and took grand child out of vehicle. A second later, vehicle blew up. Fire department was notified.
While in the street vehicle was in park and the key was taken out of the ignition switch. Then, vehicle caught on fire under the steering wheel. Dealership was notified. Floor manager indicated to the consumer there was nothing we could do.
NHTSA investigations
Battery cable chafing
Non-crash engine compartment fires
Odi gathered fire data from various sources and inspected subject vehicles to assess the scope and frequency of non-crash engine compartment fires caused by starter cable chafing.odi's analysis found that most of the suspect fires occurred after the vehicle had received service repairs in the area of the subject cable.consumer complaint data indicate that the problem experience has declined since a peak in late…
Electrical complaints in other Sephia years
Frequently asked questions
How common are electrical problems on the 1999 Kia Sephia?
NHTSA has 63 complaints about the electrical system of the 1999 Kia Sephia, 15% of the model year's 428 complaints. The component named most often is 12v/24v/48v battery (14 mentions).
Is there a recall for 1999 Kia Sephia electrical problems?
No. NHTSA lists no electrical system recall for the 1999 Kia Sephia, though it has 5 recalls for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 1999 Kia Sephia electrical problems start?
Half of the complaints with a recorded mileage happened before about 21,000 miles, and 75% before 25,000 miles.
Is it dangerous?
Owners linked 1 crash, 16 fires and 1 injury to electrical system problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.