Most common 2004 Kia Rio problems
Share of the 38 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
Kia Rio complaints by model year
Best Rio years: 2011, 2022, 2010. Years to avoid: 2013, 2016, 2001, 2002, 2003. Compare all years →
2004 Kia Rio recalls (2)
Child seat
Certain passenger vehicles fail to conform to the requirements of federal motor vehicle safety standard no. 225, 'child restraint anchorage systems.' certain child restraint anchors will not fully latch onto the lower latch anchors located between the rear seat back and rear seat cushion because of interference between the…
Remedy: Dealers will replace the lower anchors free of charge. The recall began on January 30, 2006. Owners May contact Kia at 1-800-333-4542.
Fuel system, gasoline › Delivery
On certain passenger vehicles, the fuel intake nipple of the fuel distributor is subject to fracture or cracking during removal of the quick connect coupling securing the main fuel tube assembly to the fuel intake nipple, or when force is accidentally applied to the intake nipple during the vehicle assembly process or during…
Remedy: Dealers will replace the fuel distributor and main fuel tube assemblies. The recall began June 18, 2004. Owners should contact Kia at 1-800-333-4542.
What 2004 Kia Rio owners say
Engine & cooling
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. So of course we took the spectra in right away to get a new belt so we wouldn't have 2 cars down. That cost 677.00. I had 78,000 on the spectra and there was 83,000 on the Rio. I investigated this problem come to find out alot of people had this problem so Kia knows about it. …
Dt*: the contact stated that since the vehicle was purchased on January 19th 2005, it has been experiencing problems with the carburetor and a bad odor that comes from the engine. The vehicle was also sold to the contact without notification of recall defect to the carburetor. The vehicle was taken to the dealers to have a part replaced to remedy problems with the carburetor but vehicle consistently experiences the same problems. The vehicle was taken back on ten other occasions for services related to the problem. The vehicle was than taken to an independent mechanic who determined that the problem was related to fuel injection system. The manufacturer was notified and provided a referral to another dealers for service. The vehicle has been taken to the recommended dealer for service. The engine light illuminated, however the dealer refused to address the problem. …
Fuel & propulsion system
Our car caught on fire. Kia says that recall notices were sent out to the previous owner to take the car to a Kia dealer for repairs. Notice was sent out years ago (2002). Kia knew that the repairs were never done because no dealership had billed Kia for repairs. For nine (9) years this car was on the road without a safety recall being performed for fire. For nine years we registered this car and Kia made no attempt to find out who owns the vehicle. Kia is being very unethical because they say that a notice was sent out (one notice) and now they have done their obligation.
The car caught on fire, Kia says they sent a notification to the original owner, years ago. We feel that we were entitled to a recall notice before the car burned down. We feel this is not a small recall, it was a fire, a fire is very dangerous and can burn and kill people. We had 22 kias rios in our fleet and never received recall notices on any of them. Kia did send notices to the original owner however they had the information as to which cars received the recommended repairs and which cars never came in, there needs to be some follow up.
Electrical system
I bought this car used a little less than a week ago. There was a thumping noise under the hood so I took the car to the dealer twice for this issue. I looked under the hood tonight and found a bunch of pieces that are not bolted down and the battery is completely unsecured and can move around freely. It's horribly unsafe because the battery being loose can affect the entire car and the parts that aren't bolted in place are causing major issues with the AC and other systems.
My 2004 Kia Rio started to stall at stop signs and lights @ 24,000 I am also experiencing erratic tachometer readings (up and down) and I have had a continued rough idle. I have brought the car to my dealer on more than 6 occasions and at that point they only returned the computer chip and told me there seems to be nothing wrong with my car. After hiring a lawyer and constant pressure from them to fix the car, they ordered a throttle arm and agreed to try it out. On June 23, 2006 before they put the throttle item in, I stalled @ 30 MPH making a turn onto to a street from a intersection. A car coming the other way and stopped inches short of hitting me on my drivers side door. At this point even with the new part placed in my car, I do not feel safe driving this car since they said there is no way to guarantee the problem will be fixed.
2004 Kia Rio engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined |
|---|---|---|---|
| 1.6L 4-cyl | 5-speed manual | FWD | 23 / 30 / 26 |
| 1.6L 4-cyl | 4-speed automatic | FWD | 22 / 30 / 25 |
EPA ratings. Class: Compact car.
Frequently asked questions
Is the 2004 Kia Rio a good car?
Based on 38 owner complaints filed with NHTSA, the 2004 Rio rates average: 21% fewer complaints than a typical year of the Rio at the same age. Complaint counts don't account for sales volume or individual maintenance, so have any used car inspected before buying.
What is the most common problem with the 2004 Kia Rio?
The engine & cooling — 12 complaints, 32% of all complaints for this model year, most often about engine. Next are the fuel & propulsion system (6) and electrical system (5).
How many recalls does the 2004 Kia Rio have?
There are 2 recalls for the 2004 Kia Rio, the most recent from December 12, 2005 (child seat). Recall repairs are free at any authorized dealer — check whether yours has been done with the VIN recall check.
What are the best and worst years of the Kia Rio?
The best years by complaints, compared at the same age, are 2011, 2022 and 2010. Years to avoid or approach with caution: 2013, 2016, 2001, 2002 and 2003. See the full Kia Rio years comparison.
At what mileage do 2004 Kia Rio problems happen?
The median mileage reported in complaints is about 69,000 miles; 34% of problems with a recorded mileage started before 50,000 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.