Problems · NHTSA complaints
2012 Kia Rio problems
Owners filed 54 complaints about the 2012 Kia Rio with NHTSA between Apr 2012 and Aug 2026. The most-cited component is engine (24).
Complaints
54
Filed with NHTSA
Crashes
3
Reported by owners
Fires
9
Reported by owners
Injuries
4
People reported injured
Deaths
0
Reported to NHTSA
Complaints by component
One complaint can cite several components
- Engine24
- Air bags12
- Fuel/propulsion system7
- Vehicle speed control6
- Electrical system6
- Service brakes3
- Service brakes, hydraulic3
- Seat belts3
- Wheels2
- Engine and engine cooling1
- Electronic stability control (esc)1
- Suspension1
- Fuel system, gasoline1
- Other / unknown5
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.
Data from NHTSA Complaints API · synced Oct 28, 2026NHTSA vehicle page
When complaints were filed
Does it get worse with age? Complaints per calendar year filed
2
2
4
5
4
4
3
5
8
1
3
1
4
3
5
View as table
| Model year | Complaints filed per calendar year |
|---|---|
| 2012 | 2 |
| 2013 | 2 |
| 2014 | 4 |
| 2015 | 5 |
| 2016 | 4 |
| 2017 | 4 |
| 2018 | 3 |
| 2019 | 5 |
| 2020 | 8 |
| 2021 | 1 |
| 2022 | 3 |
| 2023 | 1 |
| 2024 | 4 |
| 2025 | 3 |
| 2026 | 5 |
Mileage at failure isn’t a structured field in NHTSA complaint data, so we don’t chart it. Some owners mention it in their reports below.
Top problems in owners’ words
Verbatim from NHTSA complaints, newest first
Engine
24 reports7 fires
“I am filing a safety complaint regarding my 2012 Kia Rio, which currently has approximately 150,000 miles. I first became aware of these problems at approximately 120,000 miles. The vehicle has excessive oil consumption despite being consistently and properly maintained. I have been meticulous about maintenance because the vehicle has a lifetime powertrain warranty, and I have documentation and receipts for required maintenance, including regular oil changes and other scheduled services. On multiple occasions, I have taken the vehicle in for a scheduled oil change and discovered that it had little or no oil remaining. Because of this, I have had to begin having oil added between regularly scheduled oil changes. I do not know the exact amount of oil being consumed because I initially had no reason to monitor or measure oil consumption between oil changes. The vehicle also has a recurring catalytic-converter/check-engine warning that comes on, goes off, and later returns. It has experienced noticeable loss of power and has developed a clicking or knocking sound from the engine. When the vehicle is sitting or idling, it can also indicate that it is running hot…”
Air bags
12 reports2 crashes
“The airbag warning light and the ABS warning light turned on simultaneously while driving. This is a severe safety hazard as both critical, life-saving safety features are currently compromised. I have already contacted Kia Customer Care regarding this issue, but I am filing this official complaint with the NHTSA to ensure a proper safety investigation is documented for this vehicle.”
Fuel/propulsion system
7 reports
“Our granddaughter bought this car from a private seller. My son is a mechanic and when he inspected the undercarriage he found a small leak in the seam of the gas tank. The local KIA dealer said it is not covered. This, to me, is a safety and emissions issue. Please assist. The car is available at any time for inspection. Thank you”
Vehicle speed control
6 reports1 crash
“The contact owns a 2012 Kia Rio. The contact stated that while driving at an unknown speed, the RPMs was rising to the red line immediately. The vehicle was towed to the residence. The vehicle was taken to the dealer where it was diagnosed that there was transmission maintenance needed on the vehicle. The vehicle was repaired however, the failure persisted. The vehicle was taken to an independent mechanic who was unable to duplicate the failure. The vehicle was not repaired, and the failure continued. The vehicle was towed back to the dealer and the towing technician noticed that the accelerator pedal was stuck. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 64,000.”
Electrical system
6 reports3 fires
“I RECENTLY PURCHASED MY VEHICLE AND IMMEDIATELY NOTICED WHAT SEEMS TO BE OIL COMING FROM THE ENGINE, POOLING ON TOP OF THE BLOCK BUT ALSO LEAKING ONTO THE GROUND AFTER BEING PARKED FOR AN HOUR OR SO. THE WALLS AROUND THE ENGINE, MAINLY ON THE LEFT SIDE OR PASSENGER SIDE WERE SATURATED WITH PRESUMABLY THE SAME FLUID. UNDER THE CAR IS ALSO SATURATED FROM WHAT I AM GUESSING TO BE A LEAK, PERHAPS THE SAME LEAK FROM ATOP THE ENGINE BLOCK. I'VE HAD THE CAR REPAIRED AND PAID FOR A SYSTEM FAULT DIAGNOSTIC, AND IN BOTH CASES HAVEN'T RECEIVED ANY HELPFUL INFO AS TO WHAT IT IS, THE CAUSE OR WHERE THE LEAK IS COMING FROM, OR HOW TO TREAT IT. I VERY RECENTLY HAD THE OIL CHANGED AND THE INVOICE SHOWED A COMMENT STATING THAT MY CAR APPEARS TO BE LEAKING OIL. THERE WAS NO FURTHER COMMENTARY. I FEAR THAT MY KIA RIO MAY BE DANGEROUS TO DRIVE FOR REASONS SUCH AS A FIRE HAZARD OR BREAKDOWN FROM OVERHEATING POSSIBLY RESULTING IN LEAVING ME ON THE SIDE OF A HIGHWAY, STRANDED. ALSO THE A/C AND HEATER DO NOT OPERATE AS THEY SHOULD. THE PANEL CONTROLS ARE OUT OF WHACK AND NEITHER A/C OR HEAT PERFORM IN SYNC WITH THE COMMANDS. A MECHANIC HAS SAID THIS APPEARS TO BE DUE TO ELECTRICAL…”
Service brakes
3 reports
“ABOUT 3 MTHS AGO STARTED USING OIL 3 QTS EXTRA THE WENT TO A QT A WEEK, NOW USING A QUART EVERY OTHER DAY, HAVE HAD PEOPLE CHECK. CANT FIND OUT WHERE OIL IS GOING, HAVE PARKED IT, ALSO, AIRBAG LIGHT CAME ON ABOUT 4MTHS AGO, KIA RIO HAS 114,000. THE CALIBER FROZE UP AT 88,000 THE BRAKE PADS KEPT WEARING ON LEFT SIDE, NOW THE RIGHT STARTING TO WEARING MORE...I HAVE THE GOLD AUTOGUARD WARRANTY UP TO 120,000 WITH HENDRICK CHEVROLET, TOOK IT IN ON APPT. DAY N TIME, HAD 30 CARS AHEAD. I HAVE ALSO LEARNED. CARFAX ON CARS ARE NOT TRUE, THIS CAR WAS NOTED WITH NO DAMAGE OR WRECKS, BUT I HAVE SEEN ON LEFT SIDE OF CAR, MARKS OF JUNK YARD PARTS, EVEN ON BACK WINDOW. REASON FOR PARKING CAR BC ITS COSTING TO MUCH FOR OIL, ALSO MY GRANDBABY IS ALWAYS WITH ME IN THIS 2012 KIA RIO, THIS CAR ISNT WORTH HER LIFE, NO CAR IS...OH ON CARFAX IT STATE'S ITS AN EX THEN ON SECOND PAGE IT STATE'S A LX, WHICH UNDERSTAND MITE BE TYPE ERROR BUT WHEN IT STATE'S NO DAMAGE OR WRECK, THATS A BIG ERROR. NEVER GOT CHECK OIL LIGHT NOT ONE TIME, NEW IT WNOR A CHECK ENGINE LIGHT, ONLY LIGHT WAS AND IS THE AIRBAG LIGHT.”
Data from NHTSA Complaints API (owner reports, unverified) · synced Oct 28, 2026
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.