Problems · NHTSA complaints

1999 Kia Sephia problems

Owners filed 428 complaints about the 1999 Kia Sephia with NHTSA between Jan 1999 and Feb 2020. The most-cited component is service brakes, hydraulic (160).

Complaints
428
Filed with NHTSA
Crashes
50
Reported by owners
Fires
42
Reported by owners
Injuries
37
People reported injured
Deaths
0
Reported to NHTSA
01 —By component

Complaints by component

One complaint can cite several components
  1. Service brakes, hydraulic160
  2. Engine and engine cooling82
  3. Power train67
  4. Electrical system60
  5. Fuel system, gasoline41
  6. Air bags36
  7. Steering23
  8. Visibility17
  9. Structure15
  10. Suspension15
  11. Seat belts13
  12. Equipment13
  13. Latches/locks/linkages10
  14. Exterior lighting10

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.

Data from NHTSA Complaints API · synced Nov 11, 2026NHTSA vehicle page
02 —Trend

When complaints were filed

Does it get worse with age? Complaints per calendar year filed
View as table
Model yearComplaints filed per calendar year
199964
2000156
200182
200254
200330
200412
20059
20068
20071
20084
20092
20100
20110
20120
20130
20140
20152
20163
20170
20180
20190
20201

Mileage at failure isn’t a structured field in NHTSA complaint data, so we don’t chart it. Some owners mention it in their reports below.

03 —Owner reports

Top problems in owners’ words

Verbatim from NHTSA complaints, newest first

Service brakes, hydraulic

160 reports18 crashes1 fire
“FAX ON BEHALF OF, RE AN ACCIDENT WITH HIS 1999 KIA SEPHIA THE AIRBAGS FAILED TO DEPLOY AND THE BACK BRAKES DID NOT FUNCTION CORRECTLY SINCE THE PURCHASE OF THE VEHICLE. *KB *JB”
Owner complaint to NHTSAFiled Nov 1, 2007Service brakes, hydraulic, Air bagsCrash reportedODI 10208320

Engine and engine cooling

82 reports2 crashes23 fires1 related recall
“TL*THE CONTACT OWNS A 1999 KIA SEPHIA. SHORTLY AFTER THE VEHICLE WAS PURCHASED, IT FAILED TO START. THE VEHICLE WAS TOWED TO THE DEALER AND REPAIRED. ONE MONTH LATER, WHILE DRIVING AT AN UNKNOWN SPEED, THE VEHICLE BEGAN TO SPUTTER AND EVENTUALLY SHUT OFF. PRIOR TO SHUTTING OFF, THE VEHICLE LOST POWER STEERING ABILITY AND THE CONTACT STRUCK A CURB. THE CV AXLE JOINT WAS DAMAGED. THE VEHICLE HAS NOT BEEN DIAGNOSED BY THE DEALER. THE CURRENT MILEAGE WAS 147,000 AND FAILURE MILEAGE WAS 140,000.”
Owner complaint to NHTSAFiled Apr 16, 2008Steering, Engine and engine coolingCrash reportedODI 10224672

Power train

67 reports6 fires
“1999 SEPHIA BRAKES, TRANSMISSION WERE REPLACED. CONSUMER FEELS THAT THE EXHAUST SHOULD BE RECALLED. *TS THE TECHNICIAN DETERMINE THAT THERE WAS A SPLIT IN THE CENTERPIPE OF THE EXHAUST WHICH CAUSED IT TO BE LOUD. THE PART IS A PIECE OF FLEXIBLE HOUSING. THE PART COULD NOT BE PURCHASED SEPARATELY BUT THE CONSUMER HAD TO PURCHASE THE ENTIRE PIPE. THE PART WAS REPLACED BUT SPLIT AGAIN THREE MORE TIMES. *NM SINCE THE VEHICLE WAS PURCHASED THE BRAKES HAVE BEEN REPLACED, THE TRANSMISSION HAS BEEN REPLACED AND GAS LEAKAGE PROBLEM HAS BEEN REPAIRED.”
Owner complaint to NHTSAFiled Jun 1, 2006Service brakes, hydraulic, Engine and engine cooling, Fuel system, gasoline, Power trainODI 10159458

Electrical system

60 reports1 crash16 fires
“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 DRIVER REAR STABILIZER BUSHINGS NEED REPLACED, THE DRIVER'S SIDE DRIVE AXEL NEEDS REPLACED, THE AIR BAGS STILL DO NOT WORK, THE IGNITION SWITCH STILL GETS STUCK AND WON'T TURN OVER, AND TWO WEEKS AGO A PISTON WAS THROWN THROUGH THE ENGINE AND CAUGHT THE CAR ON FIRE. THE CAR IS NOW PARKED IN MY DRIVE…”
Owner complaint to NHTSAFiled Jan 6, 2006Suspension, Service brakes, hydraulic, Engine and engine cooling, Power train, Electrical system, Air bagsFire reportedODI 10147054

Fuel system, gasoline

41 reports1 fire2 related recalls
“TL*THE CONTACT OWNS A 1999 KIA SEPHIA. THE CONTACT RECEIVED A RECALL NOTICE FOR NHTSA CAMPAIGN ID NUMBER 99V317000 (FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP). HE WAS NOT EXPERIENCING ANY FAILURES AT THE TIME, BUT HE TOOK THE VEHICLE TO THE DEALER AND THEY REPLACED THE FUEL PUMP CONNECTORS. IN 2003 (THREE YEARS LATER), THE ENGINE SERVICE LIGHT ILLUMINATED ON THE INSTRUMENT PANEL AND THE VEHICLE WOULD SPORADICALLY STALL AT ANY SPEED. THE VEHICLE ALSO EXPERIENCED A NO START CONDITION. HE TOOK THE VEHICLE BACK TO THE DEALER AND THEY STATED THAT THE FUEL PUMP CONNECTOR WAS CORRODED AND NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED, BUT THE FAILURE RECURRED IN 2006. HE TOOK THE VEHICLE BACK TO THE DEALER AND THEY STATED THAT THE FUEL PUMP CONNECTOR WAS CORRODED AGAIN. THE VEHICLE WAS REPAIRED AGAIN; HOWEVER, THE CONTACT BELIEVES THAT THE RECALL REPAIR IS NOT THE CORRECT REMEDY BECAUSE THE CORROSION OCCURS EVERY THREE YEARS. THE FAILURE MILEAGE WAS 14,000 AND CURRENT MILEAGE WAS 54,000. UPDATED 08/06/09.*JB”
Owner complaint to NHTSAFiled Jul 17, 2009Fuel system, gasolineODI 10277113

Air bags

36 reports30 crashes1 fire
“DT*: THE CONTACT STATED WHILE DRIVING THE VEHICLE 45MPH ANOTHER VEHICLE REAR ENDED THE CONTACT'S VEHICLE. THIS RESULTED IN A COLLISION, THE AIR BAGS DID NOT DEPLOY. ALSO THE DRIVER'S SEAT FELL BACKWARD DURING THE COLLISION. INJURIES WERE SUSTAINED; THE VEHICLE WAS ABLE TO BE DRIVEN HOME. THE VEHICLE HAS NOT BEEN INSPECTED. THE MANUFACTURER HAS NOT BEEN CONTACTED , NO REPAIRS MADE.”
Owner complaint to NHTSAFiled Mar 6, 2006Air bags, SeatsCrash reportedODI 10151864
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 11, 2026

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.