Transmission complaints owners filed with the U.S. government (NHTSA) for each model year, per 100,000 cars sold. A complaint counts when it's filed under the transmission, or under the power train and the owner describes the transmission (shifting, slipping, gears, CVT). It's an owner's report, not a confirmed defect, and older years have had longer to collect complaints.
What owners describe
Share of this model's transmission complaints that mention each symptom. One complaint can mention several.
In owners' words
There is a knocking noise in the transmission, that results in the transmission needing to be replaced every 37,000 miles.
2001 Kia Rio owner · NHTSA complaint
While driving at any speed and with no warning transmission will stall when vehicle manually switches gears. Dealer notified.
2001 Kia Rio owner · NHTSA complaint
Quick answers
Which Kia Rio years have transmission problems?
By transmission complaints filed with NHTSA per car sold, the worst Kia Rio years are 2003, 2001, 2002.
What are common Kia Rio transmission problems?
Owners most often describe lost power while driving, transmission replaced, slipping.
Which Kia Rio years have the fewest transmission complaints?
Since 2010, the Kia Rio years with the fewest transmission complaints per car sold are 2019, 2010, 2015.
See every problem, not just the transmission: Kia Rio reliability by year. How we count
