KIA RIO Service Brakes, Hydraulic Problems

Source: NHTSA · Updated Oct 5, 2026 · 126 complaints analyzed

Owners have filed 126 complaints with NHTSA about service brakes, hydraulic problems on the KIA RIO across 18 model years. The 2013 model year has the most (21). The words owners use most often: “brakes hydraulic contacted” (12% of reports).

What owners describe

Phrases that appear unusually often in these complaints compared with complaints about other cars.

  • Brakes hydraulic contacted: mentioned in 15 of 126 complaints (12%)

At what mileage do service brakes, hydraulic problems happen?

Based on 50 complaints that reported the odometer reading.

Under 10k miles13 · 26%
10k–25k miles11 · 22%
25k–50k miles5 · 10%
50k–75k miles10 · 20%
75k–100k miles4 · 8%
100k–150k miles5 · 10%
150k+ miles2 · 4%

How serious are the reports?

Of 126 complaints, 12 mention a crash, 3 a fire, 6 an injury.

KIA RIO service brakes, hydraulic complaints by model year

Peak: 2013, with 21 complaints
2000: 1200012001: 17172002: 182002182003: 12122004: 4200442005: 112006: 2200622007: 552008: 3200832009: 222010: 2201022011: 112012: 3201232013: 21212014: 7201472015: 992016: 122016122017: 66

n = 126 complaints · Source: NHTSA

Model yearService Brakes, Hydraulic complaintsShare of that yearMedian miles
2017 RIO619%—
2016 RIO1216%60,000
2015 RIO917%94,000
2014 RIO713%95,000
2013 RIO2114%114,928
2012 RIO36%—
2011 RIO14%13,000
2010 RIO28%9,000
2009 RIO25%22,450
2008 RIO37%10,000
2007 RIO511%13,000
2006 RIO23%53,000
2005 RIO13%—
2004 RIO411%34,508
2003 RIO1216%15,000
2002 RIO1814%8,100
2001 RIO178%30,000
2000 RIO133%—

When owners reported it

Peak: 2024, with 36 complaints
2001: 3200132002: 14142003: 6200362004: 16162005: 3200532006: 442007: 6200762008: 112009: 4200942010: 442011: 4201142012: 222014: 1201412023: 18182024: 362024362025: 332026: 120261

n = 126 complaints · Source: NHTSA

Related recalls (2)

Service brakes, hydraulic:antilock/traction control/electronic limited slip:control unit/modulePark outsideSep 25, 2023 · NHTSA campaign 23V652000 · 1,730,192 vehicles

Model years: 2012, 2013, 2014, 2015, 2016, 2017

Problem: Kia America, Inc. (Kia) is recalling certain 2010-2019 Borrego, 2014-2016 Cadenza, 2010-2013 Forte, Forte Koup, Sportage, 2015-2018 K900, 2011-2015 Optima, 2011-2013 Optima Hybrid, Soul, 2012-2017 Rio, 2011-2014 Sorento, and 2010-2011 Rondo vehicles. The Hydraulic Electronic Control Unit (HECU) may experience an electrical short, which can result in an engine compartment fire while parked or driving.

Risk: An engine compartment fire while parked or driving can increase the risk of injury.

Fix: Owners are advised to park outside and away from structures until the recall repair is complete. Dealers will replace the HECU fuse, free of charge. Interim notification letters, notifying owners of the safety risk, were mailed November 14, 2023. Owner notification letters were mailed March 29, 2024 through June 18, 2024. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC284.

Service brakes, hydraulic:foundation components:master cylinderDec 1, 2021 · NHTSA campaign 21V936000 · 87 vehicles

Model years: 2020, 2021

Problem: 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.

Risk: Reduced braking performance can cause longer brake pedal travel or extend the distance required to stop the vehicle, increasing the risk of a crash.

Fix: 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.

What owners report

Short excerpts of recent complaints, with personal details removed. Full reports are on NHTSA.gov.

The contact called on behalf of her mother, who owned a 2013 Kia Rio. The contact stated that while the contact's mother was approaching a stop sign, the brake pedal was depressed, and the vehicle stalled. The contact's mother noticed smoke coming from under the hood. The contact's mother stated…

Received Apr 20, 2026 · NHTSA complaint 11732377

The contact owns a 2013 Kia Rio. The contact had notification of NHTSA Campaign Number: 23V652000 (Service Brakes, Hydraulic) and the vehicle was taken to the dealer for the recall repair. The recall repair was performed; however, while starting the vehicle the check engine, ABS, and oil warning…

Received Nov 3, 2025 · NHTSA complaint 11697241

The contact owns a 2015 Kia Rio. The contact stated that while driving at 30 MPH, he observed smoke emanating from the engine compartment, prompting him to pull to the shoulder of the roadway and evacuate the vehicle. After a visual inspection of the engine compartment, the contact observed flame…

Received Feb 28, 2025 · NHTSA complaint 11645607

The contact owns a 2015 Kia Rio. The contact received notification of NHTSA Campaign Number: 23V652000 (Service Brakes, Hydraulic); however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The…

Received Jan 30, 2025 · NHTSA complaint 11639547

The contact owns a 2015 Kia Rio. The contact stated that while her son was driving at approximately 35 MPH, the vehicle stalled. The contact stated that her son was unable to restart the vehicle and had the vehicle towed back to the residence. The contact was not aware of any warning lights being…

Received Nov 12, 2024 · NHTSA complaint 11624705
KIA RIO
2017 Kia Rio (YB) S 5-door hatchback. Photographed in Fremantle, Western Australia , Australia.. Representative photo; appearance varies by model year. Photo: EurovisionNim, CC BY-SA 4.0, via Wikimedia Commons.

Frequently asked questions

Do all KIA RIOs have service brakes, hydraulic problems?

No. NHTSA has 126 owner complaints about service brakes, hydraulic for the KIA RIO. Complaint data shows that the problem is reported, not how many of all cars sold are affected.

Was there a recall on the KIA RIO service brakes, hydraulic?

Yes: 2 safety recalls list service brakes, hydraulic. Check your VIN on NHTSA.gov to see whether the fix was done on your car.

What do owners say about service brakes, hydraulic problems on the KIA RIO?

The most frequent phrase is “brakes hydraulic contacted”, in 15 of 126 complaints.

Other KIA RIO problems

See all KIA RIO problems.