2018 KIA Niro Problems, Complaints & Recalls
- Compared with other Niro years
- More complaints than other years 2nd of 10 for complaints
- Safety recalls
- 3 recalls: check your VIN
- NHTSA crash rating
- Not rated
Owners have filed 60 complaints with NHTSA about the 2018 KIA Niro. That ranks 2nd out of 10 Niro model years for complaints. The most reported problem area is power train (19 complaints, 32%), typically at around 113,832 miles. Complaints mention 5 crashes, 4 injuries. There are 3 safety recalls covering this model year. NHTSA has opened 1 defect investigation involving it.
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- 60owner complaints
- 3safety recalls
- 1NHTSA investigations
- 5complaints mentioning a crash
Complaints are unverified owner reports and are not adjusted for sales volume.
Most common 2018 KIA Niro problems
Complaints grouped by the part of the car owners reported, with the median mileage when the problem happened.
| Problem area | Complaints | Share | Median miles | Owners mention most | Typical repair cost |
|---|---|---|---|---|---|
| Power Train | 19 | 32% | 113,832 | — | — |
| Electrical System | 18 | 30% | 1,927 | — | — |
| Engine | 17 | 28% | 62,115 | — | — |
| Unknown or Other | 11 | 18% | 1,355 | — | — |
| Service Brakes | 6 | 10% | 1,800 | — | — |
| Vehicle Speed Control | 4 | 7% | 60,005 | — | — |
| Structure | 3 | 5% | 7,268 | — | — |
| Exterior Lighting | 2 | 3% | — | — | — |
| Fuel/propulsion System | 2 | 3% | — | — | — |
| Air Bags | 1 | 2% | — | — | — |
| Engine and Engine Cooling | 1 | 2% | 74,000 | — | — |
| Seats | 1 | 2% | — | — | — |
One complaint can list several problem areas, so shares can add up to more than 100%.
Complaints by year received
2018 KIA Niro recalls (3)
Tap a recall to see the problem, the risk and the fix.
Power train:automatic transmission:internal:clutches/bands:actuators/solenoids
Problem: Kia America, Inc. (Kia) is recalling certain 2017-2022 Niro and 2018-2022 Niro Plug-in Hybrid vehicles. Fluid may leak into the printed circuit board inside the hydraulic clutch actuator, which can result in an engine compartment fire.
Risk: A fire increases the risk of injury.
Fix: Dealers will inspect and replace the hydraulic clutch actuator as necessary and install a new fuse, free of charge. Owner notification letters were mailed December 29, 2023. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC276.
Hybrid propulsion system
Problem: Kia Motors America (Kia) is recalling certain 2017-2018 Kia Niro hybrid electric vehicles previously recalled under recall 18V-666. The Main Relay within the Power Relay Assembly (PRA) may have inadequate connections between its contacts, causing increased electrical resistance, which can overheat the rear seats.
Risk: Overheated rear seats increase the risk of a fire.
Fix: Dealers will inspect the PRA and replace either the PRA or the Main Relay, as necessary, free of charge. Owner notification letters were mailed January 9, 2023. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC256. This recall supersedes NHTSA recall number 18V-666. Vehicles already repaired under the previous recall will need to have the new remedy completed.
Hybrid propulsion system
Problem: Kia Motors America (Kia) is recalling certain 2017-2018 Kia Niro hybrid electric vehicles. The Main Relay within the Power Relay Assembly (PRA) may have inadequate connections between its contacts, causing increased electrical resistance.
Risk: The increased electrical resistance can overheat the rear seat which is above the PRA, increasing the risk of a fire.
Fix: Kia will notify owners, and dealers will inspect the Power Relay Assembly (PRA) for damage. If no damage is found, the main relay will be replaced. If damage is found, the PRA will be replaced. These repairs will be performed free of charge. The recall began November 23, 2018. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC168.
To see whether a specific car still has an open recall, enter its VIN on NHTSA's official recall lookup. You can also decode a VIN here.
NHTSA defect investigations
- Pedestrian alert sounds (DP22005) — opened Jan 27, 2023, closed Aug 7, 2023, led to recall 22V063000.
Recent owner reports
Short excerpts of the latest complaints filed with NHTSA, with personal details removed. Full reports can be searched on NHTSA.gov.
The dealership is falsely reporting to Kia Corporate and the NHTSA that Recall SC276 is 'completed' by only replacing a fuse. They are refusing to replace the actively leaking, fire-hazardous Hydraulic Clutch Actuator unless I pay an out-of-pocket diagnostic fee. They are violating federal recall…
My 2018 Kia Niro had the Hydraulic Clutch Actuator (HCA) replacement in 2024 due to a recall. About two years later, it failed again causing the call to completely stop working creating safety issues for me. The car was towed to the dealership but Kia refused to pay for the fix. I eventually paid…
My kia niro 2018 backup camera takes a few seconds to start up when the vehicle is put in reverse. the time it takes differs from a second to sometimes 5 seconds. I know of accident caused in a McDonalds drive through where someone was backing up but the cam didn't turn on right away and they got…
The contact owns a 2018 Kia Niro. The contact stated that while driving at an undisclosed speed, the temperature gauge became elevated, and the vehicle stalled. The message "Check Hybrid System - Turn Engine Off" was displayed. The contact associated the failure with NHTSA Campaign Number…
The vehicle experienced a sudden powertrain failure while driving. A certified Kia dealership diagnostic scan confirmed active Diagnostic Trouble Code (DTC) P17ED (Engine Clutch System) and a physical hydraulic clutch fluid leak around the transmission housing area. These symptoms match the exact…
Other KIA Niro years
| Year | Complaints | Recalls |
|---|---|---|
| 2026 Niro | 2 | 0 |
| 2025 Niro | 17 | 1 |
| 2024 Niro | 10 | 1 |
| 2023 Niro | 44 | 2 |
| 2022 Niro | 31 | 1 |
| 2021 Niro | 9 | 1 |
| 2020 Niro | 39 | 1 |
| 2019 Niro | 56 | 1 |
| 2018 | 60 | 3 |
| 2017 Niro | 82 | 4 |
See all KIA Niro problems by year, every KIA model, or the KIA VIN decoder.
Similar KIA models
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Frequently asked questions
What are the most common problems with the 2018 KIA Niro?
Owners most often report power train, electrical system, engine problems. The top one, power train, accounts for 19 complaints.
Was there a recall on the 2018 KIA Niro?
Yes, 3 safety recalls. Enter your VIN at NHTSA.gov to check whether the repairs were done on your car.
Was the 2018 KIA Niro a good year?
Complaint data can't fully answer that, because counts aren't adjusted for sales. Compared with other Niro model years, the 2018 has more complaints than most years. Always get a pre-purchase inspection and check the VIN for open recalls.