2021 Kia RIO Transmission and drivetrain Problems
- Complaints
- 2about this part
- Share
- 13%of 15 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the transmission and drivetrain of the 2021 Kia RIO, 13% of the 15 complaints for this model year.
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 had driven my wife to her school about 5 miles and headed back to my work another 5 miles when i tried to accelerate pass car I lost almost all power barely making it up a slight hill I kept going trying to make it to my house barely going 10 miles an hour. I thought the transmission had let go cause while I had the gas peddle floored i went at best 10-15 miles an hour I eventually parked the car I knew it would never make it up another slight hill. It was rowed to a nearby dealer where they could find no problem telling me it was just some bad gas. …”
NHTSA complaint #11491460, filed 2022-10Related service bulletins
- 11017172Apr 17, 2025TECHNICAL SERVICE BULLETIN: TRANSMISSION FLUID APPLICATION GUIDE - This bulletin has been revised to include additional information. New/revised sections of this bulletin are…
- 11004930Jul 11, 2024TECHNICAL SERVICE BULLETIN: IVT OIL PRESSURE SENSOR REPLACEMENT: This bulletin provides information to replace the Intelligent Variable Transmission (IVT) Oil Pressure Sensor…
- 11000787May 16, 2024This bulletin provides information relating to the correct transmission fluid type and fill quantity requirement for each Kia model. A flush is required ONLY when a transmission…
- 10226555Nov 18, 2022TECHNICAL SERVICE BULLETIN: TRANSMISSION FLUID APPLICATION GUIDE - This bulletin provides information relating to the correct transmission fluid type and fill quantity…
Transmission and drivetrain: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2023 | 2 | 17% |
| 2021 | 2 | 13% |
| 2020 | 5 | 19% |
| 2019 | 2 | 9% |
| 2018 | 1 | 4% |
| 2017 | 1 | 3% |
| 2016 | 5 | 6% |
| 2015 | 1 | 2% |
| 2014 | 6 | 12% |
| 2013 | 5 | 3% |
| 2010 | 1 | 4% |
| 2009 | 1 | 3% |
| 2008 | 2 | 4% |
| 2007 | 3 | 7% |
| 2006 | 2 | 3% |
| 2005 | 3 | 8% |
| 2004 | 4 | 11% |
| 2003 | 12 | 16% |
| 2002 | 8 | 6% |
| 2001 | 25 | 11% |
Other parts of the 2021 Kia RIO
6 complaintsSteering
4 complaintsBrakes
3 complaintsEngine
2 complaintsBack-over prevention (rear camera)
1 complaintsElectrical system
1 complaintsFuel system
1 complaintsLane departure
1 complaintsSeat belts
1 complaints
← All problems reported for the 2021 Kia RIO
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 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