Most common 2017 Kia Niro problems
Share of the 82 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
Kia Niro complaints by model year
Best Niro years: 2021. Years to avoid: 2023, 2025, 2022. Compare all years →
2017 Kia Niro recalls (4)
Power train › Automatic transmission › Internal › Clutches/bands › Actuators/solenoids
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.
Remedy: 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.
Hybrid propulsion system
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.
Remedy: 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.
Hybrid propulsion system
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.
Remedy: 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.
Hybrid propulsion system
Kia Motors America (Kia) is recalling certain 2017 Kia Niro vehicles. The Hydraulic Clutch Actuator (HCA) inner oil seal may leak, allowing oil to accumulate in the cap area, possibly resulting in an electrical short.
Remedy: Kia will notify owners, and dealers will inspect the HCA caps for leaked oil and replace the HCA assembly if needed, or replace the HCA cap with additional sealant. These repairs will be performed free of charge.
What 2017 Kia Niro owners say
Engine & cooling all 33 →
The contact owns a 2017 Kia Niro. The contact stated that while driving approximately 60 MPH, there was smoke coming from the rear of the vehicle. The message, "Turn Off the Vehicle and Stop" was displayed, and the transmission failure warning light was illuminated. The contact pulled over and turned off the vehicle. Once the vehicle was turned off, the smoke dissipated. The vehicle was towed to the dealer, who diagnosed that there were holes in the engine, power steering, and there was an engine oil leak. The engine, transmission, and battery were replaced. However, 2 months later, the contact attempted to start the vehicle; however, the vehicle failed to start. The vehicle was scheduled to be towed to another dealer, Buster Miles Kia (1401 S Quintard Ave, Anniston, AL 36201). The vehicle was not diagnosed or repaired. …
The contact owns a 2017 Kia Niro. The contact stated that while operating the vehicle, the message "Engine Overheated - Turn Engine Off" was displayed with white smoke coming from the exhaust system. Upon inspection, it was discovered that the coolant level was extremely low. The contact stated that coolant was added to the reservoir; however, hours later the coolant level was low again. The vehicle was towed to the local mechanic, who diagnosed the vehicle and determined that the head gasket was blown and that the engine needed to be replaced. The vehicle was not repaired. The manufacturer and local dealer were not notified of the failure. The failure mileage was 112,000.
Electrical system all 23 →
The contact owns a 2017 Kia Niro. The contact stated that while driving 60 MPH on the highway, the vehicle jolted and shook abnormally. The electrical system warning light illuminated, and the vehicle lost partial power. The engine and hybrid warning lights were illuminated. The vehicle was coasted off the roadway to a gas station. The vehicle was towed to the local dealer, where it was diagnosed with a blown high-voltage fuse. The vehicle was repaired with a higher voltage fuse. The manufacturer was contacted and opened a case. The approximate failure mileage was 101,000. The VIN was not available.
The contact owns a 2017 Kia Niro. The contact stated while driving at an undisclosed speed, the check hybrid system warning light illuminated, and the hybrid system seized. The vehicle was towed to the dealer where it was diagnosed with power relay assembly failure. The contact was informed that the power relay assembly needed to be replaced. The vehicle was taken to the dealer to be repaired. The contact referenced Technical Service Bulletin: SC256 as a possible fix for the failure. The manufacturer was not made aware of the failure. The failure mileage was approximately 87,000.
Transmission & drivetrain
The contact owns a 2017 Kia Niro. The contact received notification of NHTSA Campaign Number: 23V534000 (Power Train) however, the part to do the recall repair was not yet available. The contact stated that the HEV warning light was illuminated. Additionally, the contact stated while driving 35-40 MPH and depressing the accelerator pedal, the vehicle failed to respond and lost motive power. The contact was able to veer to the side of the road. The contact was able to restart the vehicle, but the vehicle failed to respond while depressing the accelerator pedal. The vehicle was towed to the dealer, where it was diagnosed, and the dealer determined that the failure was related to the recall. The dealer informed the contact that the recall repair part was not yet available. The vehicle was not repaired. …
The contact owns a 2017 Kia Niro. The contact stated that while driving approximately 60 MPH, there was smoke coming from the rear of the vehicle. The message, "Turn Off the Vehicle and Stop" was displayed, and the transmission failure warning light was illuminated. The contact pulled over and turned off the vehicle. Once the vehicle was turned off, the smoke dissipated. The vehicle was towed to the dealer, who diagnosed that there were holes in the engine, power steering, and there was an engine oil leak. The engine, transmission, and battery were replaced. However, 2 months later, the contact attempted to start the vehicle; however, the vehicle failed to start. The vehicle was scheduled to be towed to another dealer, Buster Miles Kia (1401 S Quintard Ave, Anniston, AL 36201). The vehicle was not diagnosed or repaired. …
2017 Kia Niro engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined |
|---|---|---|---|
| 1.6L 4-cyl hybrid | 6-speed dual-clutch | FWD | 52 / 49 / 50 |
EPA ratings. Class: Wagon.
Frequently asked questions
Is the 2017 Kia Niro a good car?
There isn't enough complaint history for the Niro to compare model years reliably. So far owners have filed 82 complaints with NHTSA.
What is the most common problem with the 2017 Kia Niro?
The engine & cooling — 33 complaints, 40% of all complaints for this model year, most often about exhaust system. Next are the electrical system (23) and transmission & drivetrain (19).
How many recalls does the 2017 Kia Niro have?
There are 4 recalls for the 2017 Kia Niro, the most recent from July 31, 2023 (actuators/solenoids). Recall repairs are free at any authorized dealer — check whether yours has been done with the VIN recall check.
What are the best and worst years of the Kia Niro?
The best years by complaints, compared at the same age, are 2021. Years to avoid or approach with caution: 2023, 2025 and 2022. See the full Kia Niro years comparison.
At what mileage do 2017 Kia Niro problems happen?
The median mileage reported in complaints is about 51,000 miles; 48% of problems with a recorded mileage started before 50,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.