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Kia Niro

2018 only

75 classified complaints 3 recalls

28,232 sold in the US for 2018.

21 complaints on file
per 10,000 sold

2018 Kia Niro have 75 classified complaints on record for that year specifically, plus 3 recalls. The most common issue in this year is Hybrid or EV traction battery and inverter, typically surfacing around 45,505 miles.

Computed directly from stored federal records for 2018 model years only — not blended with the rest of this vehicle's production run. See the full Kia Niro report for every year combined.

Where this year fits

2017

2018

2019

2023

Complaints filed per individual model year — highlighted bars link to their own dedicated page.

What breaks, and when — 2018 only

Hybrid or EV traction battery and inverter · Electrical 17 complaints · 6.0/10k sold

Median onset: 45,505 miles.

More common in newer model years. · Typical repair: $2,740–$5,240 nationally.

Manual clutch, flywheel and hydraulics · Transmission 9 complaints · 3.2/10k sold

Median onset: 48,000 miles.

More common in older model years. · Typical repair: $1,070–$1,980 nationally.

Dual-clutch mechatronics and clutch packs · Transmission 7 complaints · 2.5/10k sold

Median onset: 175,000 miles.

Tends to show up later than this model's other issues. · More common in older model years.

Which other vehicles have dual-clutch problems? →
Master cylinder and booster · Brakes 7 complaints · 2.5/10k sold

Median onset: 1,800 miles. 42.9% of these reported an injury, a death, or a crash with fire.

Tends to show up earlier than this model's other issues.

Cooling system: radiator, water pump, thermostat, fan · Engine 6 complaints · 2.1/10k sold

Median onset: 116,000 miles.

Tends to show up later than this model's other issues. · More common in older model years. · Typical repair: $260–$1,910 nationally.

Doors, windows, latches, seats and trim · Body and interior 6 complaints · 2.1/10k sold

Median onset: 580 miles.

Tends to show up earlier than this model's other issues. · More common in newer model years.

Wiring harness, grounds and connectors · Electrical 5 complaints · 1.8/10k sold

Median onset: 1,927 miles. 40.0% of these reported an injury, a death, or a crash with fire.

Tends to show up earlier than this model's other issues. · More common in newer model years.

Harsh, delayed or erratic shifting · Transmission 4 complaints · 1.4/10k sold

Median onset: 120,000 miles.

Tends to show up later than this model's other issues. · More common in older model years.

Which other vehicles have automatic transmission problems? →

From owner-filed complaints to NHTSA, not independently verified. Federal mileage reporting on recent complaints is sparse — see how it works. Cost ranges are national estimates from book labor hours and parts pricing, not this vehicle's actual repair history — they don't account for your location or shop type.

Cost estimator: what will this one cost you?

Enter the car's year and mileage. See which known problems are due in your next 3 years, what each costs at your state's labor rates, which ones to ask the seller about, and routine maintenance to budget for.

How does 2018 compare with other Niro years? Every model year ranked by complaints per 10,000 sold. See years →

Sources: NHTSA Office of Defects Investigation — complaints and recalls, scoped to 2018 model year. See the full Kia Niro report for every year and full specs/safety data.