Which parts fail
Components named in complaints (engine, cooling system, oil leaks, timing chain, exhaust).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2000 Kia Sephia owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact owns a 2000 Kia Sephia. The contact stated that while driving at 40 MPH and approaching a traffic light, the brake pedal was depressed and the vehicle stalled. There was no warning light illuminated. The contact was unable to veer to the side of the road. The vehicle was able to restart after being jumpstarted. The contact continued to drive; however, the failure recurred 5 times while driving and depressing the brake pedal or the accelerator pedal. After each failure, the vehicle was able to be restarted when jumpstarted. The vehicle was taken to a local Pep Boys and diagnosed; however, no fault code was retrieved. The dealer and the manufacturer were not notified of the failure. The vehicle was not repaired. The failure mileage was approximately 130,000.
I bought a 2000 Kia Sephia on November 27, 2003. This car has the balance of a 100,000 mile powertrain warranty and only had 15,000 miles on it when I bought it. I noticed that it was using a quart of oil every 1,000 miles and after I changed the oil it was using a quart every 500 miles. I had already taken it in to the dealer for 15,000 mile servicing and took it back about this oil problem. The first thing they asked was permission to pull the heads, after which they informed me that the top of the motor was burnt and the only cause for this was failure to perform maintenance. I was asked to produce maintenance records for the life of the car, which I did. After producing these records, the service manager at the dealership now wanted permission to drop the oil pan. I gave it as I thought my car would finally be fixed. …
I've had many problems with the catalytic converters disintegrating from within. I've had them replaced many times at least 3 or 4 times in the last 2 yrs the most recent was this summer about 2 months ago. I am having this problem again it begins to act like it's going to stall, then starts vigourously shaking, and it also loses acceleration speed. I'll be driving and all of a sudden it starts acting up and losing speed and it wont go any higher than 20 MPH or so. This is a continuous problem and one that I consider very dangerous because I could be driving on a busy street or a hwy and I lose acceleration speed and it shakes. This poses a problem to my own safety and that of others driving while these effects occur. I'm scared it will blow up, burn up, or fall apart with all the shaking or even stall and cause a major accident. Please help!!! …
I have <45000 miles on my car (2000 Kia Sephia) and have had to have the front brakes replaced 3x and the back brakes replaced 1x. Also, when I turn on the ac, there is a loud noise from the front of the car. The car hesitates when trying to get up to speed. The car also feels like it is trying to pull something of great weight when driving at 55 MPH. The back seatbelts do not always lock. The dealer informed me that the seat belts are only to lock when the brakes are slammed or the vehicle is hit (so how is a child booster seat supposed to stay put when the vehicle is in motion?)
Dt: while driving, the battery light came on and the engine began to run hot. The cooling system rocketed to high after the battery light illuminated. The engine went dead in the middle of the freeway. The car was towed to a dealership. The dealer informed the consumer they would not be able to check the vehicle until after July 11th. The consumer did not know what exactly the dealerships diagnosis was because they have yet to check vehicle. Consumer suspected this was a cooling system issue with battery problems as well.
Tl contact owns a 2000 Kia Sephia. The contact stated that when she depressed the accelerator pedal, the engine would race first and then the vehicle would move forward. The over drive light stayed on and the engine light would blink. The vehicle was taken to an authorized dealership where the dealer changed the sensors for the lights. However, the over drive and check engine lights were constantly illuminated. The failure mileage was approximately 162,000. The current mileage was 162,384. Updated 11/03/10.
The sensor/gas level in the gas tank went out when the car had 53000 + or - on it and it cost us $300 to fix it. The driver's door doesn't seal. And now, as we left a store tonight, the flashing (yes flashing) check engine light came on again and the car is sputtering and clanging from under the bonnet. It is in the evening and a Friday night. I opened the hood and it smelled funky/burnt. It was sputtering. The car currently has 72000 miles on it. I'll try to get it looked at in the morrow.
Our Kia Sephia 2000 is a lemon. We have had to replace the brakes four times because of premature ware and shaking due to poor design. We received the car with a dead battery. We are on our third battery. We were on our third set of tires before 30,000 miles. The gear shift will stick so that you can not take it out of park. The weather molding is falling off. Check engine light goes on and they could not keep it from coming on.
While driving, the vehicle shut down and to restarted ten to twenty minutes later. By the time the vehicle was pulled over to the slow lane, the acceleration started again. (after a minute or two with no power) it sputtered before, while cruising. A carb cleanser was placed in. As the vehicle approached 35 MPH or 45 MPH, the acceleration restarted and the consumer was able to pull back onto the road.
Dt*: the contact stated while driving a clanking noise was heard in the engine. Then, with no warning lights, the engine seized. The vehicle was towed to the dealership, who determined there was sludge in the oil and the engine needed to be replaced. Updated 03/03/06.
Engine complaints in other Sephia years
Frequently asked questions
How common are engine problems on the 2000 Kia Sephia?
NHTSA has 44 complaints about the engine & cooling of the 2000 Kia Sephia, 17% of the model year's 266 complaints. The component named most often is engine › gasoline (16 mentions).
Is there a recall for 2000 Kia Sephia engine problems?
No. NHTSA lists no engine & cooling recall for the 2000 Kia Sephia, though it has 1 recall 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 2000 Kia Sephia engine problems start?
Half of the complaints with a recorded mileage happened before about 62,000 miles, and 33% before 25,000 miles.
Is it dangerous?
Owners linked 0 crashes, 1 fire and 3 injuries to engine & cooling 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.