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 2003 Kia Rio owners, lightly cleaned up (personal details are redacted by NHTSA).
Seat belts, car seat retaining hooks, ECM, and distributor are recalled. Cheyenne Kia had 3 weeks before original appointment to get the parts. I delivered the car for repairs only to get a call 4 hours later that they cannot find the parts. It has now been 6 weeks since picking up my car and they cannot find the parts to do the recall repairs. All I have been able to do is leave a message with jennifer xt 45960 at [phone] case # k3094095 Kia customer care to find out when I can safely put my kids in the backseat of the car.
The consumer took the vehicle to dealership to check for a strong odor inside of the vehicle. The fumes/odors became very heavy when driving which caused the driver to become ill. The consumer was informed by the mechanic that the odor the driver was smelling was called kosmoline and would eventually disappear. There was a nauseating smell of burning rubber or plastic from the time of purchase. The consumer was allergic to the smell after breathing the melting kosmoline and or undercarriage for over 3K miles. The smell had come from the vents as well when the vehicle was stopped. The vehicle experienced a hard start from a cold start the dealer was unable to duplicate the problem.
2003 Kia Rio with defective engine. Customer states that the dealership told her that a new engine was put in the car in June 07 but it continues to smoke, overheat and cut off* the consumer was told the head gasket needed to be replaced. The tail lights were inoperative. The dealer replaced the bulbs. The lights inside the vehicle were inoperative. They replaced the main wiring harness. The consumer had to place the gear into neutral, in order to start the vehicle. The dealer adjusted the transmission range switch. The consumer stated that her vehicle is at the dealership yet again being fixed. Updated 08/23/07.
While driving on the highway at approximately 60 MPH, the car lost total power without warning. The driver was able to steer and control the car and coasted to the side of the road. Several cars had to swerve out of the way as they were going the speed limit but the car concerned was going significantly slower. Upon inspection, the timing belt sprocket was hanging outside of the plastic cover which was burning from melted plastic. The car is within the limits of the warranty and we are awaiting a final diagnosis from the dealer and coverage determination from the manufacturer.
In April 2003 I bought a 2003 Kia Rio cinco for my family. When I try to start it in the morning it will not start. It takes about six to ten tries to get it started. Then it runs bad for miles. It also runs very hot and it seems the more I drive it the less preformance I been geting. My brakes are also bad when I first drive it after it sits for hours. Kia told me that it all has to do with the reformuladed gas we use in milwaukee and chicago. After months of people at Kia not calling me back and tring to resoulve this with Kia I am interested in a class astion law suit.
Bought 2003 Kia Rio new. In jan 2005 at about 53,000 miles I heard a rattle at about 50 miles per hour. In a few seconds the engine just shutdown (timing belt broke which destroyed the engine) Kia replaced under warranty. May 21 2008 while driving about 45 miles per hour we heard a squeal and again the engine shutdown. Coasted to a stop, once again the timing belt which means another engine (58,000 since the last engine) no longer under warranty (an engine cost almost as much as the car itself).
While driving down the road with my two year old in the car, the engine seized up and stalled. The car currently wont start and had to be towed to the repair shop. However, we just had all of the routine maintenance to the car less then 300 miles prior to the engine seizing. The check engine light never came on. As of today, they don't know what the problem is except that the engine seized. There was no prior incidents with the car and it was always serviced on time.
While driving 35 MPH steering wheel would pull to the right, and a loud noise would be coming from the steering wheel. Also, vehicle would stall for no reason while driving. Driver would maintain control and pull to the side of road. Had vehicle towed to dealership, and mechanic could mot determine the cause of either problem.
When it rains the vehicle fails to start. Also, the catalytic convertor is giving out a rotten egg odor that comes through the air vents. Dealership was not willing to service the vehicle. They were only saying it takes a year before the smell goes away.
Dt*: the contact stated while attempting to turn a corner at 10 MPH the timing belt broke. The vehicle was towed to an independent repair shop where it was determined as being the timing belt rendering the engine inoperable. No repairs have been made.
Engine complaints in other Rio years
Frequently asked questions
How common are engine problems on the 2003 Kia Rio?
NHTSA has 20 complaints about the engine & cooling of the 2003 Kia Rio, 27% of the model year's 74 complaints. The component named most often is engine (6 mentions).
Is there a recall for 2003 Kia Rio engine problems?
No. NHTSA lists no engine & cooling recall for the 2003 Kia Rio, though it has 3 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 2003 Kia Rio engine problems start?
Half of the complaints with a recorded mileage happened before about 11,000 miles, and 53% before 25,000 miles.
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.