2004 Kia RIO Engine cooling Problems
- Complaints
- 12about this part
- Share
- 32%of 38 total for the year
- Median mileage
- 53,015miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 12 complaints about the engine cooling of the 2004 Kia RIO, 32% of the 38 complaints for this model year. Where a mileage was given, the median is 53,015 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“I was at a stop sign and my 2004 Kia RIO died , I pushed it to the mechanic and was told the timing belt lost its teeth and there is now no compression in 3 and 4 , the mileage on car is 68040. I was told basically the engine is toast and I wasn't even moving ,I was told by a couple of mechanics that the belt that Kia used is faulty . The owners manual says replace 60,000 miles but replace it 105,000 in california. How would a belt be bad in 49 states except california. …”
NHTSA complaint #10369219, filed 2010-12, 68,040 miles“I have a 2004 Kia RIO. I had no problems with this vehicle till the month of october when it failed inspection for emissions. I took it to the shop and it took a while before they found out it was a sensor. So then I had the car back for a week and my husband who drives the car everyday was driving home from work heard a loud noise and the car died. Come to find out the timing belt went on the vehicle. Which come to find out you are suppose to change these at 60,000 according to their book. When we bought the RIO we also bought a Kia spectra. …”
NHTSA complaint #10249072, filed 2008-11, 83,000 miles“Dealer changed computer, wiring harness , 2 injectors, plug, timing belt, sensor and replaced comes switches . Bought a 2004 Kia RIO in march 2005. It has been in the shop for the past 3 weeks. The consumer picked the car up at the shop, and it didn't make it off the lot before the car broke down again. Dealer offered me a rental car. Went back one week later to pick up the car and only went two miles before the car broke down again. Took the car back to dealer, and requested another car just like the one that I had a 2004 Kia RIO. Dealer said could not trade the car without refinancing it. …”
NHTSA complaint #10118855, filed 2005-08, 23,500 miles“Check engine soon light came on and there was not acceleration while in 1st gear. Replaced fuel injector harness. The dealer also replaced the air cleaner lid with a newly designed one, mass air flow sensor and tightened pin connectors.”
NHTSA complaint #10099686, filed 2004-11, 206 miles“The contact owns a 2004 Kia RIO. While pulling up to a parking lot at 20 MPH, the vehicle suddenly stalled. The contact attempted to restart the engine, but was unsuccessful. She was near a tire shop at the time and the mechanic stated that the timing belt failed. She had the vehicle towed to an auto repair shop and was informed that the timing belt failed and the engine valves needed to be replaced. The manufacturer stated that she would be responsible for the repairs. …”
NHTSA complaint #10260541, filed 2009-03, 80,000 milesRelated service bulletins
- 10133170Mar 2, 2018PITSTOP - ENGINE COMPONENT RE-USE GUIDELINES - In general, parts and components removed during engine repairs should be considered serviceable, and should be thoroughly cleaned…
- 10015272Jan 1, 2005Improved timing belts for the kia rio and optima.
Engine cooling: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2018 | 1 | 4% |
| 2016 | 3 | 4% |
| 2015 | 4 | 8% |
| 2013 | 3 | 2% |
| 2012 | 1 | 2% |
| 2009 | 1 | 3% |
| 2008 | 2 | 4% |
| 2007 | 2 | 4% |
| 2006 | 6 | 8% |
| 2005 | 12 | 32% |
| 2004 | 12 | 32% |
| 2003 | 19 | 26% |
| 2002 | 39 | 30% |
| 2001 | 52 | 23% |
Other parts of the 2004 Kia RIO
6 complaintsElectrical system
5 complaintsSuspension
5 complaintsBrakes
4 complaintsTransmission and drivetrain
4 complaintsAir bags
3 complaintsOther or unknown
3 complaintsVehicle speed control
3 complaintsLatches, locks and linkages
2 complaintsVisibility (wipers, defrost, mirrors)
2 complaintsWheels
2 complaintsSeat belts
1 complaints
← All problems reported for the 2004 Kia RIO
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology