2017 KIA Niro problems
Owners have filed 116 complaints about the 2017 KIA Niro with NHTSA. Engine accounts for 24.1% of them — narrowly the most common, ahead of electrical system at 16.4%.
Complaints116
Crashes4
Fires7
Injuries4
Deaths0
What owners report breaking
Engine 24.1% · 28
Electrical system 16.4% · 19
Power train 15.5% · 18
Unknown or other 10.3% · 12
Fuel/propulsion system 6.9% · 8
Structure 6.0% · 7
Steering 6.0% · 7
Engine and engine cooling 3.4% · 4
Severity
Of those complaints, 4 describe a crash, 7 describe a fire and 4 report an injury.
Reading the numbers
Filings are rising — 63 in the last three years against 39 in the three before. For a vehicle this age that usually points to a wear-related failure owners are hitting now.
The median odometer reading at the time of complaint was 43,750 miles.
In owners' own words
Failed/leaking coolant heat exchanger which is integrated into the rear catalytic converter assembly. This seems to be a well-known issue with 2017-2020 Kia Niros. Leaks cause overheating of the engine or no heat in the vehicle and potential blown head gaskets. This issue has been confirmed by an independent service center. Car itself gave no messages or warnings regarding the leak. Engine
Kia Dealership (DCH Kia of Temecula) Repair order 237695 shows Recall SC276 was 'passed' via inspection on October 16, 2025. However, the Hydraulic Clutch Actuator has now suffered the exact fluid leak the recall warned about, destroying the slave cylinder. The dealership is refusing to honor the safety recall, leaving an active fire hazard unaddressed. Engine
The contact owns a 2017 Kia Niro. The contact stated while driving 35 mph, the vehicle stalled without warning. The contact took the vehicle to the local dealer, where the vehicle was being serviced. The vehicle was not yet diagnosed nor repaired. The manufacturer was not informed of the failure. The failure mileage was approximately 94,000. Engine · reported at 94,000 miles
Verbatim from NHTSA filings. Complaints are unverified owner reports.
Safety recalls
Checking NHTSA for open recalls…