Service Brakes, Hydraulic:Foundation Components:Master Cylinder
Reduced braking performance can cause longer brake pedal travel or extend the distance required to stop the vehicle, raises the risk of a crash.
Remedy & full details
Dealers will replace the brake master cylinder, free of charge. Owner notification letters were mailed January 11, 2022. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall SC223.
Kia Motors America (Kia) is recalling certain 2020-2021 Rio vehicles. The brake master cylinder may have been manufactured with sharp edges that can damage the inner oil seal, resulting in reduced braking performance.
Complaint volume
Volume alone is not a fault rate — popular vehicles attract more reports. Read it next to the severity mix below.
What owners reported happened
5Crashes
9Fires
1Injuries
9Deaths
Across 37 complaints. Severity Index 3.54.
Severity Index weights each complaint's reported outcome (death ×10, injury ×4, fire ×3, crash ×2) and divides by total complaints. It measures how severe reports are, not how often faults occur.
Numbers in brackets are open recall campaigns for that year.
Questions
Does an open recall mean the car is unsafe to drive?
Not usually. NHTSA issues a "do not drive" or "park outside" advisory when a defect is dangerous enough to keep you out of the car — those are flagged Critical above. Everything else should be repaired promptly but is not an immediate stop-driving order.
Do I pay for recall repairs?
No. Federal law requires the manufacturer to fix a safety recall free of charge, including parts and labour, whether or not you are the original owner.
Why are there complaints but no recalls?
Complaints are unverified reports filed by owners. They can prompt an investigation, but many never become recalls — either the fault isn't safety-related or it isn't widespread.
From the same data desk
Independent sites, same maintainer, same open-data standards.