There are 2 owner-reported brakes complaints for the 2004 Kia Rioin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
TL*THE CONTACT OWNS A 2004 KIA RIO CINCO. WHILE DRIVING 30, 45, OR 55 MPH, THE VEHICLE STALLED AND SHUT OFF WITHOUT WARNING. THE DEALER WAS UNABLE TO DUPLICATE THE FAILURE AND THE DIAGNOSTIC SHOWED THAT NOTHING WAS WRONG. THE MANUFACTURE STATED THAT THE INVESTIGATION WAS CLOSED SINCE THE DEALER COULD FIND NO FAILURE WITH THE VEHICLE. THE CURRENT AND FAILURE MILEAGES WERE 53,015. UPDATED 01-14-08. *KB THE ROTORS WERE RESURFACED AND THE DRUMS WERE ROTATED. UPDATED 12/12/07. *JB
DT*: THE CONTACT STATED WHILE DRIVING 30 MPH, THE BRAKE PEDAL WAS DEPRESSED AND THE BRAKES DID NOT RESPOND. THE VEHICLE STOPPED WHEN HITTING ANOTHER VEHICLE. THERE WAS A POLICE REPORT TAKEN AT THE SCENE. THE VEHICLE WAS DRIVEN TO THE DEALERSHIP WHERE IT WAS DETERMINED THE CALIPERS WERE BLOWN OUT.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 26, 2026