Problems · by component
1999 Kia Sephia power train problems
67 owner complaints to NHTSA about the 1999 Kia Sephia cite power train, 16% of all 428 complaints for this model year.
Complaints
67
16% of all complaints
Crashes
0
Reported by owners
Fires
6
Reported by owners
Injuries
0
Reported by owners
What owners say about the power train
Verbatim from NHTSA complaints, newest first
“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.”
“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…”
“(1)CLUTCH PEDAL WOULD STICK NEAR FLOOR, WOULD'NT RETURN TO NORMAL POSITION. (2)WITH CLUTCH PEDAL DEPRESSED TO FLOOR WHILE AT A LONG LIGHT, VEHICLE BEGINS TO CREEP FORWARD, NO FURTHER PEDAL TRAVEL TO DISENGAGE AVAILABLE. (3)NOTHING YET.”
“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. THE RUBBER AROUND THE DOORS COMES OUT REPEATEDLY. GEAR SHIFTER IS CONTINUALLY STUCK. BRAKES TAKE TWICE AS LONG TO STOP MY CAR AS ANY OTHER VEHICLE I HAVE EVER DRIVEN. I HAVE TO DRIVE 2 & 1/2 HOURS TO GET REPAIRS. THE GAS MILAGE IS CLOSER TO 24 MPG THEN THE 35 THAT WAS MARKED ON IT WHEN I…”
“CONSUMER HAD TO HAVE THE MOTOR REBUILT. *PH THE ENGINE WAS REBUILT BECAUSE THE ENGINE KEPT OVERHEATING. NOW THE TRANSMISSION NEEDS TO BE REPLACED BUT THE CONSUMER CANNOT AFFORD TO REPAIR IT. THE STARTER WAS ALSO REPLACED. *NM”
“SUDDEN BRAKE FAILURE; LEAKAGE AROUND WINDOWS, TRUNK; GAS SPLASH BACK (FOUND OUT THERE WAS A RECALL ON THIS, NEVER FIXED BY PREVIOUS OWNER); FEAR SHIFT BUTTON WON'T GO IN TO CHANGE FROM PARK TO DRIVE OR REVERSE; TRANSMISSION HESTITATES AT TIMES, THEN LUNGES; CAR OVERHEATS WHILE SITTING OR DRIVING AT SLOW SPEED (FAN WORKS AND RADIATOR FULL); SMELL COMES FROM AIR CONDITIONING WHEN STOPPED (IT REALLY STINKS, WORSE THAN A SKUNK); WHEN FILLING GAS TANK TO FULL, MARK NEVER REGISTERS FULL. I SPOKE TO KIA ABOUT THESE PROBLEMS AND THEY SAID I'D HAVE TO PAY TO HAVE THEM FIXED. I THINK THERE NEEDS TO BE RECALLS ON THESE PROBLEMS AS THE PEOPLE AT KIA ARE NOT VERY FRIENDLY NOR WILLING TO HELP OUT PEOPLE. WE BOUGHT THIS CAR USED AND THOUGHT SOME OF THE PROBLEMS STEMMED FROM THAT. HOWEVER, IN RESEARCHING THE BRAKE PAD ISSUE, I FOUND MANY OF THESE SAME PROBLEMS BEGAN EARLY IN THE MANUFACTURING OF THESE VEHICLES. UNFORTUNATELY, I AM NOT UNDER WARRANTY LIKE OTHERS SO HAVE NO RECOURSE BUT TO SELL THIS VEHICLE AS SOON AS I GET THE BRAKE PADS FIXED. I DO WISH THE NTHSA COULD DO SOMETHING TO HELP US OUT ON THESE PROBLEMS WHICH ARE NOT BEING FIXED BY KIA. THANKS - DON'T BUY A KIA…”
Showing 6 of 67 reports. Read every report on NHTSA.gov.
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 11, 2026NHTSA vehicle page
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.