IsItAGoodCar

Common Problems with the
2022–2024 Kia Niro (SG2)

We've identified 3 known issues that can affect the 2022–2024 Kia Niro (SG2). 1 of these are serious faults that could be expensive to repair.

3
Known Issues
1
Serious
1
Moderate
1
Minor

All Known Issues

ICCU (Charging Unit) Failure (Niro EV)

SeriousElectrics & Electronics

Similar to the EV6, the Niro EV can suffer from ICCU failure which prevents the 12V battery from being charged by the high-voltage system, leading to a breakdown.

Most affected: EV

Estimated cost: £0–£2,000Affects: 2022–2024Often appears around: 5,000–25,000 miles

Typical symptoms

  • •"Stop vehicle and check power supply" warning
  • •Total loss of power while driving
  • •Car refusing to DC fast charge

What to inspect before you buy

  • ✓Confirm the ICCU service campaign status with a dealer
  • ✓Check for any 12V related warnings in the dashboard history

12V Battery Parasitic Drain

ModerateElectrics & Electronics

A common issue across the Niro range where the auxiliary battery loses charge when parked. This is often caused by the vehicle failing to enter "sleep" mode or software glitches in the BMS.

Most affected: HEV, PHEV, EV

Estimated cost: £0–£250Affects: 2022–2024Often appears around: Any; often appears early in ownership

Typical symptoms

  • •Car will not start
  • •"Check power supply" warnings
  • •Infotainment settings resetting

What to inspect before you buy

  • ✓Check for the latest BMS software reflash (TSB ELE323)
  • ✓Ask if a higher-capacity 12V battery has been fitted

DCT Actuator Noise (HEV/PHEV)

MinorGearbox & Transmission

The dual-clutch transmission in hybrid models can produce a clicking or whirring noise from the electronic actuator, sometimes requiring a replacement under warranty.

Most affected: HEV, PHEV

Estimated cost: £300–£700Affects: 2022–2024Often appears around: 15,000–40,000 miles

Typical symptoms

  • •Clicking sound when changing gears
  • •Slight delay in power delivery
  • •Whirring noise at low speeds

What to inspect before you buy

  • ✓Listen carefully during the transition from EV to petrol mode
  • ✓Test gear selection in both Eco and Sport modes

Buying Tips for the 2022 Kia Niro (SG2)

  • ✓For the Niro EV, confirm the ICCU (Integrated Charging Control Unit) service campaign has been completed
  • ✓Check for 12V battery health; if the car has the "12V Reset" button, use it sparingly as frequent use can damage the main battery cells
  • ✓On HEV/PHEV models, test the 6-speed DCT for smooth shifting, especially when transitioning from electric to petrol power
  • ✓Inspect the "Aero C-Pillar" (if fitted) for any rattles or loose trim at motorway speeds

Browse 2022–2024 Kia Niro (SG2) in our Directory

View MOT history, registration data, and reliability scores for 2022–2024 Kia Niro (SG2) vehicles.

View 2022–2024 Directory

Other Kia Niro (SG2) Year Periods

2022–2024

Looking at a specific 2022 Kia Niro (SG2)?

Enter the registration number to check its full MOT history, outstanding finance, write-off status, and more.

Free Vehicle Check