There are 8 stored owner reports matching the powertrain & transmission leading-label group for the 2004 Kia Amanti in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 8 of 8 matching reports.
Open the full vehicle complaint log (all categories)WHEN I START MY CAR, THE RPM ACCELERATES HIGH AS IT WILL GO. VERY ANNOYING AND LOUD. IT DOES THIS MOST OF THE TIME SOME TIMES WHEN I COME TO A STOP LIGHT AND PROCEED FORWARD, THE CAR JERKS FORWARD AS I ACCELERATE. *TR
KIA AMANTI LOSING POWER WHILE DRIVING OR LOSING POWER THEN ACCELERATING OUT OF CONTROL AND KIA SEEMS NOT TO BE ABLE TO FIX THE PROBLEM. *TR
MY CHECK ENGINE LIGHT COMES ON AND MY CAR LOSES POWER FAST NO MATTER WHAT SPEED I AM GOING. I PUT MY FOOT ON THE GAS AND THE RPM'S GO UP AND I AM ONLY ABLE TO DRIVE AT A SPEED OF 20MPH. AT TIMES MY CAR WILL DRIVE AT A NORMAL SPEED AND THE CHECK ENGINE LIGHT WILL BE ON .ITS VERY STRANGE. I'VE TAKEN IT TO THE DEALER AND THEY SAID THAT IT NEEDED A NEW CATALYTIC CONVERTER. IT WAS REPLACED UNDER WARRANTY. ONE WEEK LATER THE SAME SYMPTOMS AND ANOTHER OUT OF POCKET EXPENSE OF OVER $1,000.00 AND ANOTHER PART. THE PROBLEM STILL EXISTS MONTHS LATER. EACH TIME WITH A DIFFERENT DIAGNOSIS BY THE DEALER. MY MECHANIC DIAGNOSED THE PROBLEM WHEN IT FIRST HAPPENED WITH HIS METER AND IT READ ELECTRONIC THROTTLE BODY. I TOLD THIS TO THE DEALER MONTHS AGO AND THOUSANDS OF DOLLARS AGO. *TR
THE VEHICLE SURGES WHILE ACCELERATING. THE PROBLEM OCCURS SPORADICALLY BUT HAS DONE IT CONSISTENTLY FOR OVER 5 YEARS. EVERY TIME I TAKE IT TO THE DEALER THEY CAN'T FIND ANYTHING WRONG AND NOTHING IS DONE. THIS VEHICLE HAS AN ELECTRONIC THROTTLE. *TR
CAR ON OCCASIONS LURCHES AND STALLS FREQUENTLY. WIFE'S CAR REALLY NOT SURE IF THROTTLE,ENGINE,TRANSMISSION. JUST VERY DANGEROUS. *TR
2004 KIA AMANTI WITH TRANSMISSION PROBLEM. CONSUMER STATES THAT THE VEHICLE BEGAN TO BUCK AND JUMP AND DROPPED DOWN TO 15 MPH. HE ALSO STATES THAT THE VEHICLE CONTINUED TO SHAKE. *KB THE CONSUMER STATED THE CHECK ENGINE LIGHT ILLUMINATED AND THE CRUISE CONTROL WAS LOST. *JB
THE TRANSMISSION ON THE AMANTI SKIPS/HESITATES GOING INTO 2ND GEAR AT ABOUT 8 MILES PER HR. I HAVE RETURNED THE VEHICLE TO THE DEALER TWICE, EACH TIME THE DEALER TELLING ME THERE WERE NO PROBLEMS WITH THE TRANSMISSION. I AM TAKING IT BACK FOR THE THIRD TIME TODAY 4-4-06. I AM ALSO HAVING A PROBLEM WITH THE POWER STEERING. IT NO LONGER GOES FROM ONE LEVEL OF POWER STEERING TO ANOTHER. IT IS ALWAYS IN FULL POWER LIKE YOUR PARKING. THE FRONT END IS ALSO VERY LOOSE AND BANGING WHEN I GO OVER THE SMALLEST OF HOLES. I HAVE ALREADY HAD MY MOTOR MOUNT CHANGED ON THIS VEHICLE. *NM
TRANSMISSION SKIPS GOING FROM 2ND TO 3RD GEAR. *JB
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Apr 28, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.